Exophthalmos
Orbit Evisceration
Oculomotor Muscles
Graves Ophthalmopathy
Extraterrestrial Environment
Orbital Pseudotumor
A nonspecific tumor-like inflammatory lesion in the ORBIT of the eye. It is usually composed of mature LYMPHOCYTES; PLASMA CELLS; MACROPHAGES; LEUKOCYTES with varying degrees of FIBROSIS. Orbital pseudotumors are often associated with inflammation of the extraocular muscles (ORBITAL MYOSITIS) or inflammation of the lacrimal glands (DACRYOADENITIS).
Eye Enucleation
Orbital Implants
Diplopia
A visual symptom in which a single object is perceived by the visual cortex as two objects rather than one. Disorders associated with this condition include REFRACTIVE ERRORS; STRABISMUS; OCULOMOTOR NERVE DISEASES; TROCHLEAR NERVE DISEASES; ABDUCENS NERVE DISEASES; and diseases of the BRAIN STEM and OCCIPITAL LOBE.
Earth (Planet)
Tomography, X-Ray Computed
Decalcification, Pathologic
Frontal Sinus
Eye Injuries
Eye, Artificial
A ready-made or custom-made prosthesis of glass or plastic shaped and colored to resemble the anterior portion of a normal eye and used for cosmetic reasons. It is attached to the anterior portion of an orbital implant (ORBITAL IMPLANTS) which is placed in the socket of an enucleated or eviscerated eye. (From Dorland, 28th ed)
Eye
Exobiology
The interdisciplinary science that studies evolutionary biology, including the origin and evolution of the major elements required for life, their processing in the interstellar medium and in protostellar systems. This field also includes the study of chemical evolution and the subsequent interactions between evolving biota and planetary evolution as well as the field of biology that deals with the study of extraterrestrial life.
Oculomotor Nerve
The 3d cranial nerve. The oculomotor nerve sends motor fibers to the levator muscles of the eyelid and to the superior rectus, inferior rectus, and inferior oblique muscles of the eye. It also sends parasympathetic efferents (via the ciliary ganglion) to the muscles controlling pupillary constriction and accommodation. The motor fibers originate in the oculomotor nuclei of the midbrain.
Spacecraft
Laron Syndrome
An autosomal recessive disorder characterized by short stature, defective GROWTH HORMONE RECEPTOR, and failure to generate INSULIN-LIKE GROWTH FACTOR I by GROWTH HORMONE. Laron syndrome is not a form of primary pituitary dwarfism (GROWTH HORMONE DEFICIENCY DWARFISM) but the result of mutation of the human GHR gene on chromosome 5.
Explosive Agents
Substances that are energetically unstable and can produce a sudden expansion of the material, called an explosion, which is accompanied by heat, pressure and noise. Other things which have been described as explosive that are not included here are explosive action of laser heating, human performance, sudden epidemiological outbreaks, or fast cell growth.
Hemangioma, Cavernous
A vascular anomaly that is a collection of tortuous BLOOD VESSELS and connective tissue. This tumor-like mass with the large vascular space is filled with blood and usually appears as a strawberry-like lesion in the subcutaneous areas of the face, extremities, or other regions of the body including the central nervous system.
Sphenoid Bone
An irregular unpaired bone situated at the SKULL BASE and wedged between the frontal, temporal, and occipital bones (FRONTAL BONE; TEMPORAL BONE; OCCIPITAL BONE). Sphenoid bone consists of a median body and three pairs of processes resembling a bat with spread wings. The body is hollowed out in its inferior to form two large cavities (SPHENOID SINUS).
Mucocele
Paranasal Sinus Diseases
Magnetic Resonance Imaging
Maxillary Sinus
Tarsiidae
Optic Nerve
The 2nd cranial nerve which conveys visual information from the RETINA to the brain. The nerve carries the axons of the RETINAL GANGLION CELLS which sort at the OPTIC CHIASM and continue via the OPTIC TRACTS to the brain. The largest projection is to the lateral geniculate nuclei; other targets include the SUPERIOR COLLICULI and the SUPRACHIASMATIC NUCLEI. Though known as the second cranial nerve, it is considered part of the CENTRAL NERVOUS SYSTEM.
Cosmic Dust
Paranasal Sinuses
Air-filled spaces located within the bones around the NASAL CAVITY. They are extensions of the nasal cavity and lined by the ciliated NASAL MUCOSA. Each sinus is named for the cranial bone in which it is located, such as the ETHMOID SINUS; the FRONTAL SINUS; the MAXILLARY SINUS; and the SPHENOID SINUS.
Cranial Fossa, Anterior
Ophthalmoplegia
Orbital Cellulitis
Astronomy
Lacrimal Apparatus
Jupiter
Cosmic Radiation
Cranial Fossa, Middle
The compartment containing the anterior extremities and half the inferior surface of the temporal lobes (TEMPORAL LOBE) of the cerebral hemispheres. Lying posterior and inferior to the anterior cranial fossa (CRANIAL FOSSA, ANTERIOR), it is formed by part of the TEMPORAL BONE and SPHENOID BONE. It is separated from the posterior cranial fossa (CRANIAL FOSSA, POSTERIOR) by crests formed by the superior borders of the petrous parts of the temporal bones.
Saturn
Weightlessness
Condition in which no acceleration, whether due to gravity or any other force, can be detected by an observer within a system. It also means the absence of weight or the absence of the force of gravity acting on a body. Microgravity, gravitational force between 0 and 10 -6 g, is included here. (From NASA Thesaurus, 1988)
Periosteum
Mesenchymoma
Blepharoptosis
Graves Disease
A common form of hyperthyroidism with a diffuse hyperplastic GOITER. It is an autoimmune disorder that produces antibodies against the THYROID STIMULATING HORMONE RECEPTOR. These autoantibodies activate the TSH receptor, thereby stimulating the THYROID GLAND and hypersecretion of THYROID HORMONES. These autoantibodies can also affect the eyes (GRAVES OPHTHALMOPATHY) and the skin (Graves dermopathy).
Eye Infections, Parasitic
Strabismus
Misalignment of the visual axes of the eyes. In comitant strabismus the degree of ocular misalignment does not vary with the direction of gaze. In noncomitant strabismus the degree of misalignment varies depending on direction of gaze or which eye is fixating on the target. (Miller, Walsh & Hoyt's Clinical Neuro-Ophthalmology, 4th ed, p641)
Solar System
The group of celestial bodies, including the EARTH, orbiting around and gravitationally bound by the sun. It includes eight planets, one minor planet, and 34 natural satellites, more than 1,000 observed comets, and thousands of lesser bodies known as MINOR PLANETS (asteroids) and METEOROIDS. (From Academic American Encyclopedia, 1983)
Receptors, Thyrotropin
Cell surface proteins that bind pituitary THYROTROPIN (also named thyroid stimulating hormone or TSH) and trigger intracellular changes of the target cells. TSH receptors are present in the nervous system and on target cells in the thyroid gland. Autoantibodies to TSH receptors are implicated in thyroid diseases such as GRAVES DISEASE and Hashimoto disease (THYROIDITIS, AUTOIMMUNE).
Craniofacial Dysostosis
Trinitrotoluene
Ophthalmic Artery
Connective Tissue
Cysts
Optic Nerve Neoplasms
Evolution, Chemical
Chemical and physical transformation of the biogenic elements from their nucleosynthesis in stars to their incorporation and subsequent modification in planetary bodies and terrestrial biochemistry. It includes the mechanism of incorporation of biogenic elements into complex molecules and molecular systems, leading up to the origin of life.
Solitary Fibrous Tumors
Evolution, Planetary
Maxillary Sinus Neoplasms
Esotropia
Ocular Motility Disorders
Disorders that feature impairment of eye movements as a primary manifestation of disease. These conditions may be divided into infranuclear, nuclear, and supranuclear disorders. Diseases of the eye muscles or oculomotor cranial nerves (III, IV, and VI) are considered infranuclear. Nuclear disorders are caused by disease of the oculomotor, trochlear, or abducens nuclei in the BRAIN STEM. Supranuclear disorders are produced by dysfunction of higher order sensory and motor systems that control eye movements, including neural networks in the CEREBRAL CORTEX; BASAL GANGLIA; CEREBELLUM; and BRAIN STEM. Ocular torticollis refers to a head tilt that is caused by an ocular misalignment. Opsoclonus refers to rapid, conjugate oscillations of the eyes in multiple directions, which may occur as a parainfectious or paraneoplastic condition (e.g., OPSOCLONUS-MYOCLONUS SYNDROME). (Adams et al., Principles of Neurology, 6th ed, p240)
Strepsirhini
Harderian Gland
Space Simulation
An environment simulating one or more parameters of the space environment, applied in testing space systems or components. Often, a closed chamber is used, capable of approximating the vacuum and normal environments of space. (From NASA Thesaurus, 1988) This also includes simulated EXTRAVEHICULAR ACTIVITY studies in atmosphere exposure chambers or water tanks.
Cavernous Sinus
Moon
Panophthalmitis
Hidrocystoma
A cystic form of sweat gland adenoma (ADENOMA, SWEAT GLAND). It is produced by the cystic proliferation of apocrine secretory glands. It is not uncommon, occurring in adult life in no particular age group, with males and females equally affected. The commonest site is around the eye, particularly lateral to the outer canthus. It is cured by surgical removal. (Stedman, 25th ed; Rook et al., Textbook of Dermatology, 4th ed, p2410)
Astronauts
Retinoblastoma
A malignant tumor arising from the nuclear layer of the retina that is the most common primary tumor of the eye in children. The tumor tends to occur in early childhood or infancy and may be present at birth. The majority are sporadic, but the condition may be transmitted as an autosomal dominant trait. Histologic features include dense cellularity, small round polygonal cells, and areas of calcification and necrosis. An abnormal pupil reflex (leukokoria); NYSTAGMUS, PATHOLOGIC; STRABISMUS; and visual loss represent common clinical characteristics of this condition. (From DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, p2104)
Head Injuries, Penetrating
Zygoma
Meteoroids
Life Support Systems
Systems that provide all or most of the items necessary for maintaining life and health. Provisions are made for the supplying of oxygen, food, water, temperature and pressure control, disposition of carbon dioxide and body waste. The milieu may be a spacecraft, a submarine, or the surface of the moon. In medical care, usually under hospital conditions, LIFE SUPPORT CARE is available. (From Webster's New Collegiate Dictionary)
Cellulitis
Fossils
Eosinophilic Granuloma
Eye Evisceration
Imaging, Three-Dimensional
The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.
Frontal Sinusitis
Blindness
Oculomotor Nerve Diseases
Diseases of the oculomotor nerve or nucleus that result in weakness or paralysis of the superior rectus, inferior rectus, medial rectus, inferior oblique, or levator palpebrae muscles, or impaired parasympathetic innervation to the pupil. With a complete oculomotor palsy, the eyelid will be paralyzed, the eye will be in an abducted and inferior position, and the pupil will be markedly dilated. Commonly associated conditions include neoplasms, CRANIOCEREBRAL TRAUMA, ischemia (especially in association with DIABETES MELLITUS), and aneurysmal compression. (From Adams et al., Principles of Neurology, 6th ed, p270)
Maxillary Sinusitis
Mucormycosis
Infection in humans and animals caused by any fungus in the order Mucorales (e.g., Absidia, Mucor, Rhizopus etc.) There are many clinical types associated with infection of the central nervous system, lung, gastrointestinal tract, skin, orbit and paranasal sinuses. In humans, it usually occurs as an opportunistic infection in patients with a chronic debilitating disease, particularly uncontrolled diabetes, or who are receiving immunosuppressive agents. (From Dorland, 28th ed)
Skull Base Neoplasms
Wounds, Gunshot
Rhabdomyosarcoma
A malignant solid tumor arising from mesenchymal tissues which normally differentiate to form striated muscle. It can occur in a wide variety of sites. It is divided into four distinct types: pleomorphic, predominantly in male adults; alveolar (RHABDOMYOSARCOMA, ALVEOLAR), mainly in adolescents and young adults; embryonal (RHABDOMYOSARCOMA, EMBRYONAL), predominantly in infants and children; and botryoidal, also in young children. It is one of the most frequently occurring soft tissue sarcomas and the most common in children under 15. (From Dorland, 27th ed; Holland et al., Cancer Medicine, 3d ed, p2186; DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, pp1647-9)
Histiocytosis, Sinus
Head
Histiocytosis, Langerhans-Cell
A group of disorders resulting from the abnormal proliferation of and tissue infiltration by LANGERHANS CELLS which can be detected by their characteristic Birbeck granules (X bodies), or by monoclonal antibody staining for their surface CD1 ANTIGENS. Langerhans-cell granulomatosis can involve a single organ, or can be a systemic disorder.
Hematoma
Cranial Nerve Diseases
Phantoms, Imaging
Devices or objects in various imaging techniques used to visualize or enhance visualization by simulating conditions encountered in the procedure. Phantoms are used very often in procedures employing or measuring x-irradiation or radioactive material to evaluate performance. Phantoms often have properties similar to human tissue. Water demonstrates absorbing properties similar to normal tissue, hence water-filled phantoms are used to map radiation levels. Phantoms are used also as teaching aids to simulate real conditions with x-ray or ultrasonic machines. (From Iturralde, Dictionary and Handbook of Nuclear Medicine and Clinical Imaging, 1990)
Head Movements
Technology, Radiologic
The application of scientific knowledge or technology to the field of radiology. The applications center mostly around x-ray or radioisotopes for diagnostic and therapeutic purposes but the technological applications of any radiation or radiologic procedure is within the scope of radiologic technology.
Choroid Neoplasms
Blast Injuries
Reflex, Vestibulo-Ocular
A reflex wherein impulses are conveyed from the cupulas of the SEMICIRCULAR CANALS and from the OTOLITHIC MEMBRANE of the SACCULE AND UTRICLE via the VESTIBULAR NUCLEI of the BRAIN STEM and the median longitudinal fasciculus to the OCULOMOTOR NERVE nuclei. It functions to maintain a stable retinal image during head rotation by generating appropriate compensatory EYE MOVEMENTS.
Microtubule-Associated Proteins
Hemangioma, Capillary
A dull red, firm, dome-shaped hemangioma, sharply demarcated from surrounding skin, usually located on the head and neck, which grows rapidly and generally undergoes regression and involution without scarring. It is caused by proliferation of immature capillary vessels in active stroma, and is usually present at birth or occurs within the first two or three months of life. (Dorland, 27th ed)
Cone-Beam Computed Tomography
Mars
Optic Nerve Diseases
Conditions which produce injury or dysfunction of the second cranial or optic nerve, which is generally considered a component of the central nervous system. Damage to optic nerve fibers may occur at or near their origin in the retina, at the optic disk, or in the nerve, optic chiasm, optic tract, or lateral geniculate nuclei. Clinical manifestations may include decreased visual acuity and contrast sensitivity, impaired color vision, and an afferent pupillary defect.
Tomography, Emission-Computed, Single-Photon
A method of computed tomography that uses radionuclides which emit a single photon of a given energy. The camera is rotated 180 or 360 degrees around the patient to capture images at multiple positions along the arc. The computer is then used to reconstruct the transaxial, sagittal, and coronal images from the 3-dimensional distribution of radionuclides in the organ. The advantages of SPECT are that it can be used to observe biochemical and physiological processes as well as size and volume of the organ. The disadvantage is that, unlike positron-emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of many available photons and hence degrades the image.
Histiocytoma, Benign Fibrous
A benign tumor composed, wholly or in part, of cells with the morphologic characteristics of HISTIOCYTES and with various fibroblastic components. Fibrous histiocytomas can occur anywhere in the body. When they occur in the skin, they are called dermatofibromas or sclerosing hemangiomas. (From DeVita Jr et al., Cancer: Principles & Practice of Oncology, 5th ed, p1747)
Meningioma
A relatively common neoplasm of the CENTRAL NERVOUS SYSTEM that arises from arachnoidal cells. The majority are well differentiated vascular tumors which grow slowly and have a low potential to be invasive, although malignant subtypes occur. Meningiomas have a predilection to arise from the parasagittal region, cerebral convexity, sphenoidal ridge, olfactory groove, and SPINAL CANAL. (From DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, pp2056-7)
Models, Anatomic
Neurofibroma, Plexiform
A type of neurofibroma manifesting as a diffuse overgrowth of subcutaneous tissue, usually involving the face, scalp, neck, and chest but occasionally occurring in the abdomen or pelvis. The tumors tend to progress, and may extend along nerve roots to eventually involve the spinal roots and spinal cord. This process is almost always a manifestation of NEUROFIBROMATOSIS 1. (From Adams et al., Principles of Neurology, 6th ed, p1016; J Pediatr 1997 Nov;131(5):678-82)
Bone Cysts, Aneurysmal
Sclera
The white, opaque, fibrous, outer tunic of the eyeball, covering it entirely excepting the segment covered anteriorly by the cornea. It is essentially avascular but contains apertures for vessels, lymphatics, and nerves. It receives the tendons of insertion of the extraocular muscles and at the corneoscleral junction contains the canal of Schlemm. (From Cline et al., Dictionary of Visual Science, 4th ed)
Biopsy
Eye Infections, Fungal
Infection by a variety of fungi, usually through four possible mechanisms: superficial infection producing conjunctivitis, keratitis, or lacrimal obstruction; extension of infection from neighboring structures - skin, paranasal sinuses, nasopharynx; direct introduction during surgery or accidental penetrating trauma; or via the blood or lymphatic routes in patients with underlying mycoses.
Retrospective Studies
Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.
Rotation
Facial Bones
The facial skeleton, consisting of bones situated between the cranial base and the mandibular region. While some consider the facial bones to comprise the hyoid (HYOID BONE), palatine (HARD PALATE), and zygomatic (ZYGOMA) bones, MANDIBLE, and MAXILLA, others include also the lacrimal and nasal bones, inferior nasal concha, and vomer but exclude the hyoid bone. (Jablonski, Dictionary of Dentistry, 1992, p113)
Spindle Apparatus
Carcinoma, Adenoid Cystic
Carcinoma characterized by bands or cylinders of hyalinized or mucinous stroma separating or surrounded by nests or cords of small epithelial cells. When the cylinders occur within masses of epithelial cells, they give the tissue a perforated, sievelike, or cribriform appearance. Such tumors occur in the mammary glands, the mucous glands of the upper and lower respiratory tract, and the salivary glands. They are malignant but slow-growing, and tend to spread locally via the nerves. (Dorland, 27th ed)
Decompression, Surgical
Exotropia
A form of ocular misalignment where the visual axes diverge inappropriately. For example, medial rectus muscle weakness may produce this condition as the affected eye will deviate laterally upon attempted forward gaze. An exotropia occurs due to the relatively unopposed force exerted on the eye by the lateral rectus muscle, which pulls the eye in an outward direction.
Reconstructive Surgical Procedures
Fixation, Ocular
Optic Nerve Injuries
Injuries to the optic nerve induced by a trauma to the face or head. These may occur with closed or penetrating injuries. Relatively minor compression of the superior aspect of orbit may also result in trauma to the optic nerve. Clinical manifestations may include visual loss, PAPILLEDEMA, and an afferent pupillary defect.
Lymphoma, B-Cell, Marginal Zone
Extranodal lymphoma of lymphoid tissue associated with mucosa that is in contact with exogenous antigens. Many of the sites of these lymphomas, such as the stomach, salivary gland, and thyroid, are normally devoid of lymphoid tissue. They acquire mucosa-associated lymphoid tissue (MALT) type as a result of an immunologically mediated disorder.
Visual Acuity
Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast.
Neurofibromatosis 1
An autosomal dominant inherited disorder (with a high frequency of spontaneous mutations) that features developmental changes in the nervous system, muscles, bones, and skin, most notably in tissue derived from the embryonic NEURAL CREST. Multiple hyperpigmented skin lesions and subcutaneous tumors are the hallmark of this disease. Peripheral and central nervous system neoplasms occur frequently, especially OPTIC NERVE GLIOMA and NEUROFIBROSARCOMA. NF1 is caused by mutations which inactivate the NF1 gene (GENES, NEUROFIBROMATOSIS 1) on chromosome 17q. The incidence of learning disabilities is also elevated in this condition. (From Adams et al., Principles of Neurology, 6th ed, pp1014-18) There is overlap of clinical features with NOONAN SYNDROME in a syndrome called neurofibromatosis-Noonan syndrome. Both the PTPN11 and NF1 gene products are involved in the SIGNAL TRANSDUCTION pathway of Ras (RAS PROTEINS).
Carnivora
Abscess
Neurilemmoma
A neoplasm that arises from SCHWANN CELLS of the cranial, peripheral, and autonomic nerves. Clinically, these tumors may present as a cranial neuropathy, abdominal or soft tissue mass, intracranial lesion, or with spinal cord compression. Histologically, these tumors are encapsulated, highly vascular, and composed of a homogenous pattern of biphasic fusiform-shaped cells that may have a palisaded appearance. (From DeVita Jr et al., Cancer: Principles and Practice of Oncology, 5th ed, pp964-5)
Fatal Outcome
Nerve Compression Syndromes
Granuloma
Equipment Failure Analysis
Face
Eye Infections, Bacterial
Finite Element Analysis
Treatment Outcome
Image Processing, Computer-Assisted
Microtubules
Drosophila Proteins
Wounds, Nonpenetrating
Contractile Proteins
Saccades
Radiation Dosage
The amount of radiation energy that is deposited in a unit mass of material, such as tissues of plants or animal. In RADIOTHERAPY, radiation dosage is expressed in gray units (Gy). In RADIOLOGIC HEALTH, the dosage is expressed by the product of absorbed dose (Gy) and quality factor (a function of linear energy transfer), and is called radiation dose equivalent in sievert units (Sv).
Vision, Ocular
Soft Tissue Neoplasms
Follow-Up Studies
Image Enhancement
Radiographic Image Interpretation, Computer-Assisted
Macaca mulatta
Mitosis
Lymphoma, Non-Hodgkin
Any of a group of malignant tumors of lymphoid tissue that differ from HODGKIN DISEASE, being more heterogeneous with respect to malignant cell lineage, clinical course, prognosis, and therapy. The only common feature among these tumors is the absence of giant REED-STERNBERG CELLS, a characteristic of Hodgkin's disease.
Ultrasonography, Doppler, Color
Ultrasonography applying the Doppler effect, with the superposition of flow information as colors on a gray scale in a real-time image. This type of ultrasonography is well-suited to identifying the location of high-velocity flow (such as in a stenosis) or of mapping the extent of flow in a certain region.
Models, Biological
Spermatogonia
Ruptured aneurysm of the orbitofrontal artery associated with dural arteriovenous malformation in the anterior cranial fossa--case report. (1/749)
A 27-year-old male presented with a rare association of a ruptured orbitofrontal artery aneurysm and a dural arteriovenous malformation (DAVM) fed by both ethmoidal arteries, manifestation as severe headache, nausea, and vomiting. Computed tomography revealed a hematoma within the right frontal lobe and diffuse subarachnoid hemorrhage. The aneurysm was clipped successfully and the hematoma was evacuated. After an uneventful postoperative course, the patient was referred for gamma knife radiosurgery to treat the DAVM. In this case, the DAVM was asymptomatic and pathogenetically unrelated to the aneurysm, which demanded urgent treatment. (+info)Development of an animal model of autoimmune thyroid eye disease. (2/749)
In previous studies we have transferred thyroiditis to naive BALB/c and NOD mice with human thyrotropin (TSH) receptor (TSHR)-primed splenocytes. Because the TSHR has been implicated in the pathogenesis of thyroid eye disease (TED) we have examined the orbits of recipients of TSHR-primed T cells, generated using a TSHR fusion protein or by genetic immunization. In the NOD mice, 25 of 26 animals treated with TSHR-primed T cells developed thyroiditis with considerable follicular destruction, numerous activated and CD8+ T cells, and immunoreactivity for IFN-gamma. Thyroxine levels were reduced. Thyroiditis was not induced in controls. None of the NOD animals developed any orbital pathology. Thirty-five BALB/c mice received TSHR-primed spleen cells. Thyroiditis was induced in 60-100% and comprised activated T cells, B cells, and immunoreactivity for IL-4 and IL-10. Autoantibodies to the receptor were induced, including TSH binding inhibiting Igs. A total of 17 of 25 BALB/c orbits displayed changes consisting of accumulation of adipose tissue, edema caused by periodic acid Schiff-positive material, dissociation of the muscle fibers, the presence of TSHR immunoreactivity, and infiltration by lymphocytes and mast cells. No orbital changes or thyroiditis were observed in control BALB/c mice. We have induced orbital pathology having many parallels with human TED, only in BALB/c mice, suggesting that a Th2 autoimmune response to the TSHR may be a prerequisite for the development of TED. (+info)CT examination of the head of the Baikal seal (Phoca sibirica). (3/749)
We carried out a computerised tomographic (CT) examination to elucidate the modifications in the head related to orbital enlargement in the Baikal seal. Transverse CT images showed that (1) the external frontal contours and the frontal sinuses are compressed medially and ventrally by the orbital enlargement; (2) the caudal part of the nasal cavity and nasopharynx are compacted ventrally; and (3) the cranial cavity is displaced caudally. The neurocranium is obviously separated from the facial part in the transverse plane at the caudal region of the orbit. The disposition of the mandible, zygomatic arch, temporal bone, and the masseter, temporal, digastric and pterygoid muscles is changed by the enlarged orbit in the 3-dimensional reorganisation of the head in this species. It is suggested that adaptation for the Lake Baikal environment primarily resulted in orbital enlargement, and that the altered orbital design may subsequently have influenced the form and function of the masticatory and respiratory system. (+info)The role of octreoscan in thyroid eye disease. (4/749)
Until recently there was no imaging technique available which could demonstrate pathological changes in orbital tissues and could be regarded as a reliable measure of inflammation in thyroid eye disease (TED). Pentetreotide (a synthetic derivative of somatostatin) labelled with 111In has been used to localize tumours which possess surface or membrane receptors for somatostatin in vivo using a gamma camera (1). This technique visualizes somatostatin receptors in endocrine-related tumours in vivo and predicts the inhibitory effect of the somatostatin analogue octreotide on hormone secretion by the tumours (1). By applying 111In-DTPA-d-Phe octreotide scintigraphy (octreoscan), accumulation of the radionuclide was also detected in both the thyroid and orbit of patients with Graves' disease (2-4). If peak activity in the orbit 5h after injection of radiolabelled octreotide is set at 100%, a decrease to 40+/-4% is found at 24h, significantly different from the decrease in blood pool radioactivity, which is 15+/-4% at 24h. Accumulation of the radionuclide is most probably due to the presence in the orbital tissue of activated lymphocytes bearing somatostatin receptors (5). Alternative explanations are binding to receptors on other cell types (e.g. myoblasts, fibroblasts or endothelial cells) or local blood pooling due to venous stasis by the autoimmune orbital inflammation. (+info)Dissociable neural responses to facial expressions of sadness and anger. (5/749)
Previous neuroimaging and neuropsychological studies have investigated the neural substrates which mediate responses to fearful, disgusted and happy expressions. No previous studies have investigated the neural substrates which mediate responses to sad and angry expressions. Using functional neuroimaging, we tested two hypotheses. First, we tested whether the amygdala has a neural response to sad and/or angry facial expressions. Secondly, we tested whether the orbitofrontal cortex has a specific neural response to angry facial expressions. Volunteer subjects were scanned, using PET, while they performed a sex discrimination task involving static grey-scale images of faces expressing varying degrees of sadness and anger. We found that increasing intensity of sad facial expression was associated with enhanced activity in the left amygdala and right temporal pole. In addition, we found that increasing intensity of angry facial expression was associated with enhanced activity in the orbitofrontal and anterior cingulate cortex. We found no support for the suggestion that angry expressions generate a signal in the amygdala. The results provide evidence for dissociable, but interlocking, systems for the processing of distinct categories of negative facial expression. (+info)Glaucoma patients demonstrate faulty autoregulation of ocular blood flow during posture change. (6/749)
BACKGROUND/AIMS: Autoregulation of blood flow during posture change is important to ensure consistent organ circulation. The purpose of this study was to compare the change in retrobulbar ocular blood flow in glaucoma patients with normal subjects during supine and upright posture. METHODS: 20 open angle glaucoma patients and 20 normal subjects, similar in age and sex distribution, were evaluated. Blood pressure, intraocular pressure, and retrobulbar blood velocity were tested after 30 minutes of sitting and again after 30 minutes of lying. Retrobulbar haemodynamic measures of peak systolic velocity (PSV), end diastolic velocity (EDV), and resistance index (RI) were obtained in the ophthalmic and central retinal arteries using colour Doppler imaging (CDI). RESULTS: When changing from the upright to supine posture, normal subjects demonstrated a significant increase in OA EDV (p = 0.016) and significant decrease in OA RI (p = 0.0006) and CRA RI (p = 0.016). Glaucoma patients demonstrated similar changes in OA measures of EDV (p = 0.02) and RI (p = 0.04), but no change in CRA measures. CONCLUSION: Glaucoma patients exhibit faulty autoregulation of central retinal artery blood flow during posture change. (+info)Orbitofrontal cortex and representation of incentive value in associative learning. (7/749)
Clinical evidence indicates that damage to ventromedial prefrontal cortex disrupts goal-directed actions that are guided by motivational and emotional factors. As a consequence, patients with such damage characteristically engage in maladaptive behaviors. Other research has shown that neurons in the corresponding orbital region of prefrontal cortex in laboratory animals encode information regarding the incentive properties of goals or expected events. The present study investigates the effect of neurotoxic orbitofrontal cortex (OFC) lesions in the rat on responses that are normally influenced by associations between a conditioned stimulus (CS) and the incentive value of reinforcement. Rats were first trained to associate a visual CS with delivery of food pellets to a food cup. As a consequence of learning, rats approached the food cup during the CS in anticipation of reinforcement. In a second training phase, injection of LiCl followed consumption of the food unconditioned stimulus (US) in the home cage, a procedure used to alter the incentive value of the US. Subsequently, rats were returned to the conditioning chamber, and their responding to the CS in the absence of the food US was tested. Lesions of OFC did not affect either the initial acquisition of a conditioned response to the light CS in the first training phase or taste aversion learning in the second training phase. In the test for devaluation, however, OFC rats exhibited no change in conditioned responding to the visual CS. This outcome contrasts with the behavior of control rats; after devaluation of the US a significant decrease occurred in approach to the food cup during presentation of the CS. The results reveal an inability of a cue to access representational information about the incentive value of associated reinforcement after OFC damage. (+info)Choosing between small, likely rewards and large, unlikely rewards activates inferior and orbital prefrontal cortex. (8/749)
Patients sustaining lesions of the orbital prefrontal cortex (PFC) exhibit marked impairments in the performance of laboratory-based gambling, or risk-taking, tasks, suggesting that this part of the human PFC contributes to decision-making cognition. However, to date, little is known about the particular regions of the orbital cortex that participate in this function. In the present study, eight healthy volunteers were scanned, using H(2)(15)0 PET technology, while performing a novel computerized risk-taking task. The task involved predicting which of two mutually exclusive outcomes would occur, but critically, the larger reward (and penalty) was associated with choice of the least likely outcome, whereas the smallest reward (and penalty) was associated with choice of the most likely outcome. Resolving these "conflicting" decisions was associated with three distinct foci of regional cerebral blood flow increase within the right inferior and orbital PFC: laterally, in the anterior part of the middle frontal gyrus [Brodmann area 10 (BA 10)], medially, in the orbital gyrus (BA 11), and posteriorly, in the anterior portion of the inferior frontal gyrus (BA 47). By contrast, increases in the degree of conflict inherent in these decisions was associated with only limited changes in activity within orbital PFC and the anterior cingulate cortex. These results suggest that decision making recruits neural activity from multiple regions of the inferior PFC that receive information from a diverse set of cortical and limbic inputs, and that the contribution of the orbitofrontal regions may involve processing changes in reward-related information. (+info)
Left Lateral View of Orbital Structures at the Orbital Apex and Superior Orbital Fissure | Neuroanatomy | The Neurosurgical...
Characterisation of 11beta-hydroxysteroid dehydrogenase 1 in human orbital adipose tissue: a comparison with subcutaneous and...
Human orbital tissue and thyroid membranes express a 64 kDa protein which is recognized by autoantibodies in the serum of...
Orbitocranial wooden foreign body diagnosed by magnetic resonance imaging. Dry wood can be isodense with air and orbital fat by...
Orbital Injury in Endoscopic Sinus Surgery for Sinonasal Inflammatory Disorders: Juntendos Ten-Year Experience
Superior orbital fissure syndrome Symptoms, Diagnosis, Treatments and Causes - RightDiagnosis.com
Morphometric Analysis of Orbital Structures in Graves“ Orbitopathy - Full Text View - ClinicalTrials.gov
Correlation between orbital volume, body mass index, and eyeball position in healthy East Asians<...
DJO | Digital Journal of Ophthalmology
DJO | Digital Journal of Ophthalmology
The Thiazolidinedione Class of PPAR Ligands Rosiglitazone and Pioglitazone Inhibit TGFβ Induced Hyaluronan Secretion by Orbital...
Orbital Trauma Caused by Bicycle Hand Brakes<...
Course of pattern-reversed visual evoked cortical potentials in 30 eyes after bony orbital decompression in dysthyroid optic...
Orbital connective tissue - Visible Orbit
orbital-rim-implants
Characterization of Ocular Tissues Using Microindentation and Hertzian Viscoelastic Models | IOVS | ARVO Journals
Human Orbit: Look At What I Did, Dave | Rock, Paper, Shotgun
Genevisible - Top 10 tissues for NP 777555
Genevisible - Top 10 tissues for 1555273 at
Orbital trauma
Life (and death)...: November 2015
Stereographic measurement of orbital volume, a digital reproducible evaluation method | British Journal of Ophthalmology
CT Angiography Evaluation of Unusual Transorbital Penetrating Injury: A Toothbrush | AVESİS
Is It Possible To Widen The Bones Around The Side Of The Eye To Give The Broad Eye Look? - Plastic Surgeon | Dr. Barry L....
A multirow CT evaluation in a case of orbital decompression - ARRS GoldMinerĀ®
Human Anatomy - Lab 29 Step 2
Article - JDDonline - Journal of Drugs in Dermatology
ENDOSCOPIC ORBITAL AND TRANSORBITAL APPROACHES - PDF
Laser-driven electron recollision remembers molecular orbital structure
City Research Online - Browse by Schools and Department by Authors
Cosmetic Surgery Expert In Bangkok: Temporal Fossa Augmentation
Alberta Medical Association: Fee Navigator⢠| Health Service Code 29.91: Retrobulbar injection of therapeutic agent
105 what solution can dilantin be mixed with
IOF Member of the Week: Dr. Robert Kramberg - Interventional Orthobiologics Foundation
Orbital trauma - WikEM
Fractured orbital bone leading to a difference in pupil dialation - Eye Care - MedHelp
The Radiology Assistant : Orbita - pathology
Search Results
PHACON Orbita System - Phacon
Fetal Orbital Measurements by 3D Ultrasound - Full Text View - ClinicalTrials.gov
Tresorie - Lachrymation [Lachrymation]
Endoscopic orbital decompression of an isolated medial orbital wall fracture: A case report | Ear, Nose & Throat Journal
Building the Case for Insulin-Like Growth Factor Receptor-I Involvement in Thyroid-Associated Ophthalmopathy - ScienceOpen
Cavernous haemangioma in the orbital apex: Stereotactic-guided transcranial cryoextraction<...
Penetrating orbital trauma by stiletto causing complex cranial neuropathies | Emergency Medicine Journal
Intraorbital tissues effects of rituximab (RTX) treatment in patients with thyroid-associated ophthalmopathy (TAO)
The paradoxical predominance of medial wall injuries in blowout fracture<...
molecular orbital structure of benzene pdf
YUHSpace: MicroRNA-27 inhibits adipogenic differentiation in orbital fibroblasts from patients with Graves orbitopathy
Thyroid-associated ophthalmopathy | What is it, symptoms and treatment
Intraorbital haematoma during a commercial flight: a case report | BMC Ophthalmology | Full Text
Footprints of the globe: A practical look at the mechanism of orbital blowout fractures, with a revisit to the work of Raymond...
RePub, Erasmus University Repository:
Platelet-derived growth factor-BB: A stimulus for cytokine production by orbital...
molecular orbital structure of benzene pdf
Orbital Fracture | Orbital blow out | Orbital Trauma
Novel Therapy Shows Potential in Thyroid-Associated Ophthalmopathy - MPR
Naoya Inoue suffered fractured orbital bone in win over Nonito Donaire ā Boxing News 24
Pictorial Review of Histopathologically Diagnosed Orbital Tumors - American Journal of Ophthalmic Clinical Trials
FDA approves first treatment for thyroid eye disease - Viglya: promoting science, honoring life
ICD-10-CM Code H05.419 - Enophthalmos due to atrophy of orbital tissue, unspecified eye
Search of reference biomarkers reflecting orbital tissue remodeling in the course of Graves orbitopathy | Pawlowski | Folia...
Thyroid eye disease - RNIB - See differently
FDA approves first treatment for thyroid eye disease | WebWire
Infraorbital fold - definition of infraorbital fold by The Free Dictionary
Inferior rectus
Anterior clinoidectomy | SpringerLink
Craniopharyngiomas | Singapore Neurosurgeon | Dr Timothy Lee
Lacrimal artery - Wikipedia
Posting: UCLA Orbital Center Masters Symposium & Dissection Workshop
NAVER Academic | Saving the frontal branch during a low fronto-orbital approach
Orbital Tumors | Orbital Tumor Treatment Stockton | Manteca CA
Frontal bone Fracture
October 2016 - Cosmetic Eyelid Surgery in Beverly Hills - Dr. Guy MassryCosmetic Eyelid Surgery in Beverly Hills - Dr. Guy...
body fluids lieu dung cua propranolol the Bohr
Thyroid Eye Disease. Anatomy: There are 6 muscles that move your eye. - PDF
Aravind Eye Care System
Thyroid Eye Disease - Case 119 | Reconstructive | Eyesthetica
Silica Granuloma of Eyelid and Ocular Adnexa | JAMA Ophthalmology | JAMA Network
spectral changes cymbalta sleepy all the time described, motile
supraorbital ridge
Brachyura of the Pacific coast of America, Brachyrhyncha: Portunidae :: Allan Hancock Foundation Collection
ORTHOGNATHIC - HAIR TRANSPLANTATION HOSPITAL
Scintillant Hummingbird - Appearance | Neotropical Birds Online
Thyroid Eye Disease in the Elderly - American Academy of Ophthalmology
1173 Anchises
Orbit and classification[edit]. Anchises is a primitive Jovian asteroid orbiting in the trailering Trojan camp at Jupiter's L5 ... It orbits the Sun at a distance of 4.6-6.0 AU once every 12 years and 2 months (4,451 days; semi-major axis of 5.3 AU). Its ... orbit has an eccentricity of 0.14 and an inclination of 7° with respect to the ecliptic.[3] Up to the year 2200, its closest ... Lagrangian point, 60° behind the Gas Giant's orbit in a 1:1 resonance (see Trojans in astronomy). It is also a non-family ...
Black hole
Innermost stable circular orbit (ISCO). Main article: Innermost stable circular orbit. In Newtonian gravity, test particles can ... If there are other stars orbiting a black hole, their orbits can be used to determine the black hole's mass and location. Such ... 4.2 Proper motions of stars orbiting Sagittarius A*. *4.3 Accretion of matter *4.3.1 X-ray binaries *4.3.1.1 Quiescence and ... 2009). "Monitoring Stellar Orbits around the Massive Black Hole in the Galactic Center". The Astrophysical Journal. 692 (2): ...
31824 Elatus
Orbit and classification[edit]. Elatus orbits the Sun at a distance of 7.3-16.3 AU once every 40 years and 7 months (14,826 ... days). Its orbit has an eccentricity of 0.38 and an inclination of 5° with respect to the ecliptic.[1] ...
Great Wall of China
From low Earth orbit. A satellite image of a section of the Great Wall in northern Shanxi, running diagonally from lower left ... Veteran U.S. astronaut Gene Cernan has stated: "At Earth orbit of 100 to 200 miles [160 to 320 km] high, the Great Wall of ... A more controversial question is whether the Wall is visible from low Earth orbit (an altitude of as little as 160 km (100 mi ... I have not yet found somebody who has told me they've seen the Wall of China from Earth orbit. ... I've asked various people, ...
2143 Jimarnold
Orbit and classification[edit]. Jimarnold is a non-family asteroid from the main belt's background population.[3] It orbits the ... Its orbit has an eccentricity of 0.23 and an inclination of 8° with respect to the ecliptic.[1] ...
4709 Ennomos
Orbit and classification[edit]. Ennomos is a Jovian asteroid orbiting in the trailing Trojan camp at Jupiter's L5 Lagrangian ... It orbits the Sun at a distance of 5.1-5.4 AU once every 12 years (4,387 days; semi-major axis of 5.24 AU). Its orbit has an ... point, 60° behind its orbit in a 1:1 resonance (see Trojans in astronomy).[4] ...
Skynet 5B
Orbit[edit]. The launch placed Skynet 5B into a 250 by 35,786 kilometres (155 by 22,236 mi) geosynchronous transfer orbit with ... By the time of Skynet 5B's launch, a decision had been made to launch the backup spacecraft, Skynet 5C, as an on-orbit spare; ... in an orbit with a perigee of 35,572 kilometres (22,103 mi), an apogee of 35,867 kilometres (22,287 mi), and 0 degrees ... 6 degrees of inclination.[2][6] The satellite used its apogee motor to raise itself into geostationary orbit.[5] It is located ...
Interplanetary contamination
a b LOW-LATENCY TELEROBOTICS FROM MARS ORBIT: THE CASE FOR SYNERGY BETWEEN SCIENCE AND HUMAN EXPLORATION, Concepts and ... Study and analyses from orbit[edit]. During the "Exploration Telerobotics Symposium" in 2012 experts on telerobotics from ... Return of the sample to orbit has the advantage that it permits analysis of the sample without delay, to detect volatiles that ... Space debris - The pollution of orbit around Earth by defunct human-made objects ...
55 Cancri e
... (abbreviated 55 Cnc e, also named Janssen), is an exoplanet in the orbit of its Sun-like host star 55 Cancri A. The ... Orbit and mass[edit]. The radial velocity method used to detect 55 Cancri e obtains the minimum mass of 7.8 times that of Earth ... It takes less than 18 hours to complete an orbit and is the innermost known planet in its planetary system. 55 Cancri e was ... It was announced at the same time as another "hot Neptune" orbiting the red dwarf star Gliese 436 named Gliese 436 b. ...
Gliese 667 Cc
The planet orbits a (M-type) red dwarf star named Gliese 667 C, orbited by a total of two planets. The star is part of a ... Orbit[edit]. The orbit of Gliese 667Cc has a semi-major axis of 0.1251 astronomical units, making its year 28.155 Earth-days ... is the apparent diameter of the star from the surface of the planet in orbit (GJ667Cc in this case), h. ā. {\displaystyle {\ ... Gliese 667 Cc (also known as GJ 667Cc, HR 6426Cc, or HD 156384Cc)[4] is an exoplanet orbiting within the habitable zone of the ...
Saturn
Both the Earth and Saturn orbit the Sun on eccentric orbits, which means their distances from the Sun vary over time, and ... Phoebe was the first such satellite found and it takes more than a year to orbit Saturn in a retrograde orbit. During the early ... The Cassini-Huygens space probe entered orbit around Saturn on 1 July 2004. In June 2004, it conducted a close flyby of Phoebe ... The Moon's orbit is inclined by several degrees relative to Saturn's, so occultations will only occur when Saturn is near one ...
Ganymede (moon)
Ganymede participates in orbital resonances with Europa and Io: for every orbit of Ganymede, Europa orbits twice and Io orbits ... It is intended to perform its first flyby of Ganymede in 2029, then enter orbit of the moon in 2032. It will de-orbit and crash ... the first group of objects discovered orbiting another planet.[17] Ganymede orbits Jupiter in roughly seven days and is in a 1: ... Ganymede orbits Jupiter at a distance of 1,070,400 km, third among the Galilean satellites,[17] and completes a revolution ...
2013 FY27
... orbits the Sun once every 452 years. It will come to perihelion around 2202,[d] at a distance of about 36 AU.[6] It ... Once the orbit is known, the masses and densities of the two components can be determined. ... Follow up observations have been taken between May and July 2018 in order to determine the orbit of the satellite,[4] but the ... is currently near aphelion, 80 AU from the Sun, and, as a result, it has an apparent magnitude of 22.[1] Its orbit has a ...
Orbital elements
Real orbits have perturbations, so a given set of Keplerian elements accurately describes an orbit only at the epoch. Evolution ... A Kepler orbit is an idealized, mathematical approximation of the orbit at a particular time. ... Osculating orbit. References[edit]. *^ For example, with "VEC2TLE". amsat.org.. .mw-parser-output cite.citation{font-style: ... True anomaly (ν, θ, or f) at epoch (t0) defines the position of the orbiting body along the ellipse at a specific time (the " ...
Mars Science Laboratory
Mars transfer orbit[edit]. The MSL spacecraft departed Earth orbit and was inserted into a heliocentric Mars transfer orbit on ... The Atlas V launch vehicle is capable of launching up to 8,290 kg (18,280 lb) to geostationary transfer orbit.[114] The Atlas V ...
Ice age
Variations in Earth's orbit. The Milankovitch cycles are a set of cyclic variations in characteristics of the Earth's orbit ... and others have pointed out that those calculations are for a two-dimensional orbit of Earth but the three-dimensional orbit ... He attempted to show that they originated from changes in Earth's orbit.[18] During the following years, Esmark's ideas were ... Researchers used data on Earth's orbit to find the historical warm interglacial period that looks most like the current one and ...
Ion thruster
Examples of this include orbit transfers, attitude adjustments, drag compensation for low Earth orbits, fine adjustments for ... In Earth orbit[edit]. GOCE[edit]. ESA's Gravity Field and Steady-State Ocean Circulation Explorer (GOCE) was launched on March ... The ISS orbits at a relatively low altitude and experiences fairly high levels of atmospheric drag, requiring periodic altitude ... In a certain configuration, the ambient gas in low Earth orbit (LEO) can be used as a propellant. The gas enters the main ...
Sixth nerve palsy
Orbit[edit]. The VIth nerve's course is short and lesions in the orbit rarely give rise to isolated VIth nerve palsies, but ... In addition, III, IV, V1, and V2 involvement might also indicate a sinus lesion as all run toward the orbit in the sinus wall. ...
Comet Shoemaker-Levy 9
Jupiter-orbiting comet[edit]. Orbital studies of the new comet soon revealed that it was orbiting Jupiter rather than the Sun, ... Its orbit around Jupiter was very loosely bound, with a period of about 2 years and an apoapsis (the point in the orbit ... It is likely that it was captured from a solar orbit in the early 1970s, although the capture may have occurred as early as the ... The volume of space within which an object can be said to orbit Jupiter is defined by Jupiter's Hill sphere (also called the ...
DIRECT
"Hyperbola - Orbiting the blogosphere with Rob Coppinger. Retrieved 2009-07-18.. *^ "NASAfacts - Constellation - Orion Crew ... Low Earth Orbit and Unmanned Scientific Missions[edit]. Orion spacecraft taking a Space Shuttle Payload Delivery Module (SSPDM ... The two upper stages would meet in low Earth orbit and the lunar spacecraft would transfer from the spent JUS to the fresh JUS ... After this the spacecraft would enter lunar orbit, and the entire crew would descend to the Moon in the Altair while the Orion ...
Human mission to Mars
Launch requirements mean that this rocket would be significantly smaller than an Earth-to-orbit rocket. Mars-to-orbit launch ... "Hohmann transfer orbit diagram". Planetary.org. Retrieved 2018-03-27.. *^ "Homann Transfers". Jwilson.coe.uga.edu. Retrieved ... FAST MARS TRANSFERS THROUGH ON-ORBIT STAGING. (2012)" (PDF). Usra.edu.. *^ Matt Williams - Universe Today. "Making A Trip To ... Mars orbit by the mid-2030s (2010)[edit]. In a major space policy speech at Kennedy Space Center on 15 April 2010, Barack Obama ...
James Islington
22 August 2018). Orbit. ISBN 9780316274111 The Light of All That Falls. (10 December 2019). Orbit. ISBN 9780356507835 Islington ... He signed a deal with Orbit Books less than a year later. He has published two sequel novels, entitled An Echo of Things to ... 4 August 2014). Originally self-published, later Orbit Books. ISBN 9780992580209 An Echo of Things to Come. ( ...
Feed (Grant novel)
The ending was initially made available on Facebook on 17 May, then released online by Orbit on 23 May. The new ending starts ... Fitzgerald, Laura (23 May 2012). "What if things had endedā¦differently? FED by Mira Grant". Orbit. Retrieved 3 June 2012.. ... series of science fiction/horror novels written by Seanan McGuire under the pen name Mira Grant and published by Orbit Books in ...
Dacryoscintigraphy
Orbit. 31 (2): 77-85. doi:10.3109/01676830.2011.648797. PMID 22489850. Rossomondo, R. M.; Carlton, W. H.; Trueblood, J. H.; ...
And Having Writ...
Orbit. ISBN 1-85723-897-4. CS1 maint: discouraged parameter (link) Benson, Donald R. (1978). And having Writ... Bobbs-Merrill. ...
Sam Sykes
"TEN ARROWS OF IRON Cover Launch". Orbit. Retrieved 24 December 2019. CS1 maint: discouraged parameter (link) Official website ...
Donald E. Bently
"In-Memoriam - The Life of a Great Man" (PDF). Orbit. GE Oil & Gas. 33 (1): 4. January 2013. Archived from the original (PDF) on ... page 18 Sabin, Steve A New Edition of API 670 Orbit. March 2001. page 32. "About Don Bently". Bently Bearings. Archived from ... The Life of a Great Man Orbit. Vol. 33, No. 1. Jan 2013. page 4. Bently Enterprises Bently Ranch. ...
Brent Weeks
Orbit. pp. 916-917. ISBN 978-0-316-25130-3. Weeks, Brent (2019). The Burning White. Orbit. p. 430. ISBN 978-0-316-25128-0. ... Found on the Orbit website) Shawarma Scene (2019, after Book 5. Found on the Brent Weeks website) "Not An April Fools Joke". ... Orbit Books published a hardcover 10th Anniversary Edition of the trilogy in November 2018. Perfect Shadow, a novella set in ... "Orbit to publish Weeks title as e-book only". The Bookseller. Retrieved 10 November 2012. "Books". Brent Weeks. Retrieved 1 ...
Cherubism
The maxilla will be affected up to and including the orbits and sometimes inside the lower orbits. The maxilla and zygomatic ... Irfan S, Cassels-Brown A, Hayward J, Corrigan A (1997). "Orbital Cherubism". Orbit. 16 (2): 109-112. doi:10.3109/ ...
How Long 'til Black Future Month?
Orbit. ISBN 978-0-316-49134-1. "ALA.org - Awards Grants - How Long 'Til Black Future Month?". American Library Association. ... The book was published in November 2018 by Orbit Books, an imprint of the Hachette Book Group. The name of the collection comes ... The stories are: The book was published by Orbit Books, a speculative fiction imprint of the Hachette Book Group. It was ...
Orbit Infotech
- YouTube
Parking orbit - Wikipedia
A parking orbit is a temporary orbit used during the launch of a satellite or other space probe. A launch vehicle boosts into ... In a literal example of a parking orbit, the Automated Transfer Vehicle (ATV) could park for several months in orbit while ... The Apollo program used parking orbits, for all the reasons mentioned above except those that pertain to geostationary orbits.[ ... Geostationary spacecraft require an orbit in the plane of the equator. Getting there requires a geostationary transfer orbit ...
Halo orbit - Wikipedia
Halo orbits exist in any three-body system, e.g., the Sun-Earth-Orbiting Satellite system or the Earth-Moon-Orbiting Satellite ... Halo orbits orbit the L1, L2, or L3 Lagrangian points (orbits not shown in diagram). ... A halo orbit is a periodic, three-dimensional orbit near the L1, L2 or L3 Lagrange point in the three-body problem of orbital ... Gaias Lissajous Type Orbit - a Lissajous-type orbit, i.e., a near-circular ellipse or "halo" ...
Orbit - WoW
Inside Mercury's orbit
Kilauea From Orbit
ESA - ORBIT facility
Orbit News | TNW
Orbit. In physics, an orbit is the gravitationally curved path of an object around a point in space, for example the orbit of a ... Watch Virgin Orbit launch its first satellites into space. The payload was onboard a rocket dropped from a modified 747 jet ... orbits of planets are typically elliptical. current understanding of the mechanics of orbital motion is based on albert ... Satellites orbiting Earth are increasing like crazy - how do we prevent them from crashing?. ...
ESA - 2. Orbit
A satellite can remain in the same orbit for a long period of time as the gravitational pull of the Earth provides a balance to ... As the satellites are in orbit outside the atmosphere there is no air resistance, and therefore, according to the law of ... Therefore, a satellite in low orbit, typically about 800km from the Earth is exposed to an immense gravitational pull and has ... At a distance of 36000km, the orbiting time is 24 hours corresponding to the Earths rotation time. At this distance a ...
Hohmann orbit | Britannica.com
The German engineer Walter Hohmann showed in 1925 that elliptical orbits tangent to the orbits of both the planet of departure ... Hohmann orbit, most economical path (though not the shortest or fastest) for a spacecraft to take from one planet to another. ... Alternative Title: transfer orbit. Hohmann orbit, also called Transfer Orbit, most economical path (though not the shortest or ... Compromise orbits, faster but needing more energy than true Hohmann orbits, have been used by interplanetary probes launched ...
Polar orbit | Britannica.com
Earth orbit: ā¦to be put into a polar orbit-an orbit that crosses over Earths poles-it is launched in a northerly or southerly ... Although the benefit of an easterly launch is lost, a spacecraft in an orbit perpendicular to the Equator offers other ... Other articles where Polar orbit is discussed: spaceflight: ... In spaceflight: Earth orbit. ā¦to be put into a polar orbit-an ... Polar orbit. THIS IS A DIRECTORY PAGE. Britannica does not currently have an article on this topic. ...
Patriotic Places from Orbit
polar orbit | Encyclopedia.com
Compare EQUATORIAL ORBIT. Source for information on polar orbit: A Dictionary of Earth Sciences dictionary. ... polar orbit An orbit which is inclined at 45° or more to the equatorial plane. ... polar orbit An orbit which is inclined at 45° or more to the equatorial plane. Compare EQUATORIAL ORBIT. ... www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/polar-orbit ...
Geostationary Orbit | Encyclopedia.com
Clarke orbit*)* A satellite orbit in which the satellite travels on the equatorial plane in the same direction as the rotation ... geostationary orbit (Clarke orbit) A satellite orbit in which the satellite travels on the equatorial plane in the same ... The possibility of such an orbit was first suggested by Arthur C. Clarke, for whom the orbit is sometimes named. Compare ... geostationary orbit Location of an artificial satellite so that it remains above the same point on a planets surface because ...
Into orbit | Science News
Orbit | SheldonBrownBlog
Posted in New pages , Tagged 8-speed, bicycle, gearing, gears, hub, hybrid gearing, internal, internal-gear, Orbit, Sachs, ... Tag Archives: Orbit. SRAM and Sachs Internal-gear hubs. Posted on February 2, 2015 by John ... John has prepared a new page about the Sachs Orbit hybrid-gear hub and added information about this hub to internal-gears.html ... Orbit, planetary, Sachs, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, shifter, Spectro, SRAM , Leave a comment ...
Rival Schools Charge Into Orbit | WIRED
A team of science students at each site is vying to become the worlds first to put its own satellite into orbit. The schools ... Rival Schools Charge Into Orbit. Whiteboard Jungle. The Next Next Thing. See Spot, Drive!. People. Jargon Watch. SkyDoc at ... A team of science students at each site is vying to become the worlds first to put its own satellite into orbit. The schools ... A team of science students at each site is vying to become the worlds first to put its own satellite into orbit. ...
Get Archangel: Martian Orbit - Microsoft Store
Apollo Lunar Orbit Rescue (1965) | WIRED
... trapping its crew on the moons barren surface or in lunar orbit, 238,000 miles from home. Beyond Apollo blogger David S. F. ... man Apollo Command and Service Module during every lunar mission so that it could retrieve marooned astronauts from lunar orbit ... orbit around the moon; then, at apolune (lunar orbit high point), he would ignite the SPS again to line up his spacecrafts ... At perilune (lunar orbit low point), the pilot would fire the SPS a third time to lower the rescue CSMs apolune, thus ...
COLLIDING ORBITS
- YouTube
O2 Xda Orbit review | TechRadar
O2 Xda Orbit review. Some smartphones are smarter than others By tech.co.uk staff 18 April 2007. ... The O2 Xda Orbit is therefore a breath of fresh air. It not only comes with a built-in GPS receiver but also comes with UK road ... The Orbit has the usual full range of Microsoft Windows Mobile software. The ability to write and edit Word and Excel files - ... As the latest in the successful Xda series, the Orbit offers a great deal more than simply a novel piece of integration. This ...
Orbit Escape - yokoinc | Last.fm
Wrigley Orbit website on Behance
Low-Earth Orbit Economy | NASA
Fractures of the Midface / Orbit
... and partial orbit. Great history section I researched at Countway Library at Har⦠... Physical Exam ,ul,,li,Orbit exam ,/li,,/ul,,ul,,ul,,li,Globe integrity ,/li,,/ul,,/ul,,ul,,ul,,li,Pupils ,/li,,/ul,,/ul,,ul,,ul ... Fractures of the Midface / Orbit * 1. Fractures of the Midface W. Thomas McClellan, M.D. www.morgantownplasticsurgery.com ... A presentation on the latest in facial fracture repair of the midface, zygoma, and partial orbit. Great history section I ...
william orbit - New York Magazine
NASA - IBEX Orbit Visualization | NASA
GitHub - zurb/orbit
Orbit: Lightweight jQuery Slider. Orbit is a jQuery slider developed by ZURB. The plugin is lightweight(4KB), easy to implement ... Note: This version of Orbit has been deprecated and will no longer be developed or supported. For the most recent code, check ... Create solid fix for positioning the initial Orbit container (since it gets wrapped and positioning gets broken without ... All of the docs and the download link are on the playground page too: http://www.zurb.com/playground/orbit-jquery-image-slider ...
Return to Orbit
During this LM Comm Break, Houston has AOS with Evans, who is on his 49th orbit.]. MP3 Audio Clip ( 16 min 21 sec ). 183:57:32 ... I wasnt going to let it send us into orbit around the Sun. But I was less concerned about the shutdown than the start. I was ... Because Evans is in a 60 mile orbit, he rises over the LM horizon about 6 minutes prior to passing overhead. They will launch ... Because of slight deviations of the CSM orbit from the planned path, lift-off will be 1 minute, 10 seconds early. Evans has ...
Orbit of Sedna
... Science Animations Video ⢠March 15th, 2004 ⢠ssc2004-05v1 This animation shows the location of the newly ... As the field widens the full orbit of Sedna can be seen along with its current location. Sedna is nearing its closest approach ... Starting at the inner Solar System, which includes the orbits of Mercury, Venus, Earth, and Mars (all in yellow), the view ... pulls away through the asteroid belt and the orbits of the outer planets beyond (green). Pluto and the distant Kuiper Belt ...
SpacecraftEarth'sSatellitesOrbitalGeostationary transLunarNASA2018Placed in geostationaryEarthRocketTransfer orbitGEOSYNCHRONOUS ORBITSolar systemPlanetsPolarKilometersAltitudeInterplanetary probesBony cavityCircularHohmannLOST ORBITReach orbitFinal orbitVirgin OrbitStable orbitMoonGravityPlanet's surfaceMissionsHEASARCNavigationObservatorySatelliteCubesats2016SmartphoneTypicallyInternational CorpPlanetTracksNeptuneProbeBehaviorScenariosSuccessfullySocketAutomated Transfe
Spacecraft29
- Geostationary spacecraft require an orbit in the plane of the equator. (wikipedia.org)
- Unless the launch site itself is quite close to the equator, it requires an impractically large amount of fuel to launch a spacecraft directly into such an orbit. (wikipedia.org)
- [2] [3] For the Apollo program 's manned lunar missions, a parking orbit allowed time for spacecraft checkout while still close to home, before committing to the lunar trip. (wikipedia.org)
- Halo orbits can be thought of as resulting from an interaction between the gravitational pull of the two planetary bodies and the Coriolis and centrifugal accelerations on a spacecraft. (wikipedia.org)
- [1] Farquhar advocated using spacecraft in a halo orbit on the far side of the Moon (Earth-Moon L 2 ) as a communications relay station for an Apollo mission to the far side of the Moon. (wikipedia.org)
- A spacecraft in such a halo orbit would be in continuous view of both the Earth and the far side of the Moon. (wikipedia.org)
- Hohmann orbit , also called Transfer Orbit , most economical path (though not the shortest or fastest) for a spacecraft to take from one planet to another. (britannica.com)
- Consider Michael Collins a few years before, orbiting in his tiny Gemini 10 spacecraft with John Young. (scienceblogs.com)
- We can pretend both spacecraft were in circular orbits 200km above the surface of the earth. (scienceblogs.com)
- The thrust was applied to move the spacecraft forward in its orbital direction, and this will raise the orbit. (scienceblogs.com)
- Putting satellites and spacecraft into low earth orbit is getting easier and less expensive all the time, but that also means we're possibly creating even more orbiting space junk around our planet -- without any way to remove this garbage. (techdirt.com)
- One observation station of the French side later conducted observation and control support to the orbiting of the Shenzhou I and II spacecraft. (chinadaily.com.cn)
- The Shenzhou VI spacecraft blasted off on a Long March 2F rocket from the Jiuquan Satellite Launch Centre in north-west China at 0900 local time (0100 GMT) and entered orbit 21 minutes later. (newscientist.com)
- I think you're already seeing a space race in Asia," he says, citing plans by India and Japan to send orbiting spacecraft to study the moon. (newscientist.com)
- The spacecraft will soon use its propulsion system tocircularize the orbit at an altitude of about 13,000 miles (20,921 kilometers). (space.com)
- The newest Beidou satellite was put in space inFebruary, and a marinesurveying spacecraft was orbited Wednesday. (space.com)
- A NASA spacecraft fired its engine and slipped into orbit around the moon Saturday in the first of two back-to-back arrivals over the New Year's weekend. (nypost.com)
- Once in orbit, the near-identical Grail-A and Grail-B spacecraft will spend the next two months refining their positions until they are just 34 miles (55 kilometers) above the surface and flying in formation. (nypost.com)
- Now the spacecraft has reached its operational orbit. (rt.com)
- The mini-space shuttle spacecraft, also referred to as the OTV-3, flew aboard an Atlas V craft, rocketing towards its orbit from Cape Canaveral in Florida just after 1:00 p.m. local time. (redorbit.com)
- The spacecraft uses solar power for energy while orbiting Earth and features a 15 feet long wingspan. (redorbit.com)
- The spacecraft has now entered the earth's orbit, where it will travel for two days before arriving at the International Space Station. (rt.com)
- The Mercury Surface, Space Environment, Geochemistry, and Ranging (MESSENGER) spacecraft has become the first to orbit the solar system's innermost planet. (popularmechanics.com)
- EDT last night, March 17, the MESSENGER spacecraft completed its 17 minute-long process of entering orbit of Mercury. (popularmechanics.com)
- The spacecraft will now spend the next year in elliptical orbit. (popularmechanics.com)
- Launched in 2004, the probe-whose full name is the Mercury Surface, Space Environment, Geochemistry, and Ranging spacecraft-will be the first in history to orbit the closest planet to the Sun, and its findings will help scientists answer fundamental questions about the dawn of the solar system. (popularmechanics.com)
- If MESSENGER succeeds in entering orbit, the spacecraft will have to endure both heat from the sun, which is 11 times greater than what we receive here on Earth, and heat radiating off Mercury's surface, which Solomon says can get up to 350 degrees Celsius. (popularmechanics.com)
- By November 15, the spacecraft is expected to be orbiting the moon at a distance of 100 kilometers and sending back data and images (the camera was tested with shots looking back at Earth ). (slashdot.org)
- From the linked article: "The spacecraft will make observations from the initial orbit, and then the orbit will be lowered a 100 km circular polar orbit. (slashdot.org)
Earth's9
- At a distance of 36000km, the orbiting time is 24 hours corresponding to the Earth's rotation time. (esa.int)
- The next step is to conduct drop tests, during which Virgin Orbit engineers can study the rocket-release mechanism and observe the launch vehicle's flight through Earth's atmosphere, Virgin Orbit representatives have said . (space.com)
- about two years and eight months would be needed for a round trip, allowing for a waiting period of 455 days on Mars while the planets realigned themselves properly so that the returning craft would meet Earth's orbit when the Earth was present. (britannica.com)
- The launch was timed so that NASA's Orbiting Carbon Observatory, or OCO, would end up at the front of a train of polar-orbiting environmental satellites that cross Earth's equator every afternoon. (yahoo.com)
- Low Earth orbit CubeSats have already made affordable satellite experiments possible for universities as well as government space agencies, so floating a few of these satellites out beyond Earth's reach could open up even more possibilities. (techdirt.com)
- The CleanSpace One project is planning to launch satellites that can clear out space debris in the Earth's orbit. (techdirt.com)
- But John Logsdon, director of the Space Policy Institute at George Washington University in Washington DC, US, emphasises that China's official space plans do not call for the country to go beyond Earth's orbit. (newscientist.com)
- Orbits can be positioned near the Earth's equator (equatorial orbits) or loop from the North to South Pole (polar orbits). (oreilly.com)
- The X-37B can operate in an Earth orbit for extended periods of time and is designed to re-enter Earth's atmosphere and land on autopilot. (redorbit.com)
Satellites14
- Most satellites in halo orbit serve scientific purposes, for example as space telescopes . (wikipedia.org)
- Satellites orbiting Earth are increasing like crazy - how do we prevent them from crashing? (thenextweb.com)
- As the satellites are in orbit outside the atmosphere there is no air resistance, and therefore, according to the law of inertia, the speed of the satellite is constant resulting in a stable orbit around the Earth for many years. (esa.int)
- The company expects to be able to place small satellites in a wide variety of low Earth orbits. (space.com)
- Communications and remote-sensing satellites are often placed in geostationary orbits. (encyclopedia.com)
- DARPA is working on a project called Phoenix which aims to create new satellites that can cannibalize older satellites in orbit for parts. (techdirt.com)
- DARPA wants to demonstrate robotic satellites that can salvage reusable parts such as antennas from obsolete satellites in geosynchronous orbit, but there are quite a few technological and logistical hurdles to overcome. (techdirt.com)
- According to Xinhua, France launched an Ariane rocket on Saturday, lifting into orbit the new-generation of military satellites, Helios II A and six micro satellites for different scientific purposes. (chinadaily.com.cn)
- ARIANESPACE says two satellites ended up in off-target orbits after being launched from Kourou, French Guiana, aboard a Soyuz rocket. (news.com.au)
- THE European Space Agency and launch company Arianespace say the satellites ended up in off-target orbits after being launched on Friday from Kourou, French Guiana, aboard a Soyuz rocket. (news.com.au)
- NASA's Orbit Pavilion sound experience is an outdoor installation producing an innovative "soundscape" experience representing the movement of the International Space Station and 19 Earth Science satellites, each with distinctive sounds that interpret the satelites' missions. (huntington.org)
- The ability to rendezvous in orbit could be used to help clear out space junk or inspect or fix satellites. (newscientist.com)
- The Compass system willconsist of five satellites orbiting in the geostationary belt some 22,000 milesabove Earth, and 30 more craft circling the planet in a medium orbit, accordingto earlier Xinhua reports. (space.com)
- To a close approximation, planets and satellites follow elliptic orbits, with the center of mass being orbited at a focal point of the ellipse, as described by Kepler's laws of planetary motion. (wikipedia.org)
Orbital8
- A halo orbit is a periodic, three-dimensional orbit near the L 1 , L 2 or L 3 Lagrange point in the three-body problem of orbital mechanics . (wikipedia.org)
- Known as the Orbital Robotics Bench for Integrated Technology (ORBIT) facility, it relies on a trio of air-bearing platforms scooting across the flattest surface by far in ESA's ESTEC technical centre in the Netherlands - a 4.8 x 9 m epoxy floor smoothed to within 0.8 mm. (esa.int)
- current understanding of the mechanics of orbital motion is based on albert einstein's general theory of relativity, which accounts for gravity as due to curvature of space-time, with orbits following geodesics. (thenextweb.com)
- The Exoplanet Orbit Database is a database of well-determined orbital parameters of exoplanets, and their host stars' properties. (nasa.gov)
- This database comprises spectroscopic orbital elements measured for planets orbiting their host stars from radial velocity and transit measurements as reported in the literature. (nasa.gov)
- This Exoplanet Orbit Database includes all planets with robust, well measured orbital parameters reported in peer-reviewed articles. (nasa.gov)
- However, Albert Einstein's general theory of relativity, which accounts for gravity as due to curvature of spacetime, with orbits following geodesics, provides a more accurate calculation and understanding of the exact mechanics of orbital motion. (wikipedia.org)
- Second, he found that the orbital speed of each planet is not constant, as had previously been thought, but rather that the speed depends on the planet's distance from the Sun. Third, Kepler found a universal relationship between the orbital properties of all the planets orbiting the Sun. For the planets, the cubes of their distances from the Sun are proportional to the squares of their orbital periods. (wikipedia.org)
Geostationary trans1
- Getting there requires a geostationary transfer orbit with an apogee directly above the equator. (wikipedia.org)
Lunar9
- In December 1965, the company's engineers briefed NASA's Office of Manned Space Flight (OMSF) and Bellcomm, OMSF's planning contractor, on results of a preliminary feasibility study of a one-man CSM mission to rescue Apollo astronauts stranded in lunar orbit. (wired.com)
- The NAA engineers did not describe specific lunar-orbit rescue scenarios, though the CSM modifications they outlined offer clues about the types of rescues they envisioned. (wired.com)
- The rescue CSM pilot could reconfigure the docking unit in flight, implying that the situation in lunar orbit might be unknown or in flux when he departed Earth. (wired.com)
- NAA expected that a lunar-orbit rescue might require a spacewalk, so provided the rescue CSM pilot with a tether and a life support umbilical extension, a compressed-gas-propelled maneuvering device, and a protective 'meteoroid garment' of the type Apollo moonwalkers would wear over their suits. (wired.com)
- The rescue CSM and Saturn V would stand by until the Apollo lunar CSM safely departed lunar orbit and began the fall back to Earth, then would be rolled back to the cavernous Vehicle Assembly Building for storage until the next Apollo lunar mission. (wired.com)
- When it finally has enough energy, it will pop over the brink and it can enter lunar orbit with very little fuel use to close the orbit. (everything2.com)
- Its twin Grail-B still had to enter lunar orbit on New Year's Day. (nypost.com)
- After an 18-day journey, Chandrayaan-1, the moon mission of India, has entered Lunar orbit . (slashdot.org)
- The lunar orbit insertion placed Chandrayaan-1 in an elliptical orbit with its nearest point 400 to 500 kilometers away from the moon, and the farthest, 7,500 kilometers. (slashdot.org)
NASA3
- The next mission to use a halo orbit was Solar and Heliospheric Observatory (SOHO), a joint ESA and NASA mission to study the Sun, which arrived at Sun-Earth L 1 in 1996. (wikipedia.org)
- New NASA measurements of the orbit of the half-kilometer asteroid 1999 RQ36 have given space science its most precise measurement of such space rocks' orbit - and revealed a 160km deviation from the orbit predicted by gravity. (theregister.co.uk)
- NASA 'deep space' ship: Humans beyond orbit by 2020? (theregister.co.uk)
20183
- In May 2018, Farquhar's original idea was finally realized when China placed the first communications relay satellite into a halo orbit around the Earth-Moon L 2 point. (wikipedia.org)
- Virgin CEO Branson expects that LauncherOne could be ready to reach orbit early in 2019, according to his October 2018 blog post . (space.com)
- Yadav A., Jha K. (2018) Rulkov Map in the Superior Orbit. (springer.com)
Placed in geostationary1
- Previous Beidou satelliteswere placed in geostationary orbit, but Friday's launch delivered the firstCompass satellite to medium Earth orbit. (space.com)
Earth26
- Halo orbits exist in any three-body system, e.g., the Sun - Earth -Orbiting Satellite system or the Earth- Moon -Orbiting Satellite system. (wikipedia.org)
- A satellite can remain in the same orbit for a long period of time as the gravitational pull of the Earth provides a balance to the centrifugal force. (esa.int)
- Therefore, a satellite in low orbit, typically about 800km from the Earth is exposed to an immense gravitational pull and has to move at considerable speed to generate a corresponding centrifugal force. (esa.int)
- geostationary orbit ( Clarke orbit ) A satellite orbit in which the satellite travels on the equatorial plane in the same direction as the rotation of the Earth at a height of about 36 000 km (more than 5 Earth radii) above the equator. (encyclopedia.com)
- The craft is circling at 343 km (213 miles) above the Earth, orbiting every 90 minutes, preparing for what a senior engineer said would be the most challenging part of the mission. (france24.com)
- Starting at the inner Solar System, which includes the orbits of Mercury, Venus, Earth, and Mars (all in yellow), the view pulls away through the asteroid belt and the orbits of the outer planets beyond (green). (caltech.edu)
- Low Earth Orbit stories at Techdirt. (techdirt.com)
- It's getting easier and easier to send stuff into low earth orbit, and more folks seem to be interested in doing it. (techdirt.com)
- China's space program has achieved several significant milestones, but its anti-satellite capabilities could turn low earth orbit into an unusable space junkyard. (techdirt.com)
- One proposal to reduce space debris in low earth orbit involves deploying tons of micron-scale tungsten dust in space -- which would collide with other debris and slow down the space junk so that it burns up in the upper atmosphere. (techdirt.com)
- An unclassified document (PDF) from the US Space and Missile Systems Center ponders long and hard about how to create robust, affordable communications in Earth orbit. (zdnet.com)
- The earth orbits the sun once every 365.25 days. (dictionary.com)
- Orion will orbit Earth twice before splashing down off the California coast. (dictionary.com)
- To put into an orbit, as a satellite is put into orbit around the Earth. (dictionary.com)
- Last year, a Long March 2D rocket took off from the Jiuquan Satellite Launch Centre in the Gobi Desert carrying a satellite called Micius, named after an ancient Chinese philosopher who died in 391 B.C. The rocket placed Micius in a Sun-synchronous orbit so that it passes over the same point on Earth at the same time each day. (technologyreview.com)
- We report the first quantum teleportation of independent single-photon qubits from a ground observatory to a low Earth orbit satellite-through an up-link channel- with a distance up to 1400 km," says the Chinese team. (technologyreview.com)
- This is the first time that any object has been teleported from Earth to orbit, and it smashes the record for the longest distance for entanglement. (technologyreview.com)
- Hours before Earth revelers counted down the new year, Grail-A flew over the south pole and slowed itself to get captured into orbit. (nypost.com)
- See also GEO and middle earth orbit (MEO). (gartner.com)
- It's nearly a given that your picosatellite will go to low earth orbit (LEO), a broad band ranging from about 150km up to perhaps 600km. (oreilly.com)
- That is, it rotates around the Earth once every 90 minutes, doing about 15 orbits per day. (oreilly.com)
- Similarly, orbits can be nearly circular, or be highly eccentric-coming closer to the Earth at one end of the orbit, and then moving far away at the other. (oreilly.com)
- Because dust closer to the star is hotter than dust farther from the star, the warm dust likely traces material orbiting the star at distances comparable to distances between Earth and Jupiter around our star, the sun. (redorbit.com)
- No interviews and no contact with other people for the last 24 hours on earth before the launch is allowed as even a minor influenza can be fatal in orbit. (rt.com)
- A craft launched from Earth would be traveling more than 10 kilometers per second upon reaching the innermost planet, he says, but it would need to slow down to less than 0.09 kilometers per second to achieve successful orbit. (popularmechanics.com)
- We don't often get views of the Earth from this altitude, stuck as we are in low earth orbit (ISS - looking at you). (slashdot.org)
Rocket12
- The alternative to a parking orbit is direct injection , where the rocket fires continuously (except during staging) until its fuel is exhausted, ending with the payload on the final trajectory . (wikipedia.org)
- Use of a parking orbit requires a rocket upper stage to perform the injection burn while under zero g conditions. (wikipedia.org)
- Often, the same upper stage which performs the parking orbit injection is used for the final injection burn, which requires use of a restartable liquid-propellant rocket engine. (wikipedia.org)
- Virgin Orbit is building and testing a rocket dedicated to carrying such machines to orbit. (space.com)
- An artist's depiction of a Virgin Orbit LauncherOne rocket being air-launched from its Cosmic Girl mothership. (space.com)
- Their task was to dock with an unmanned Agena rocket which would propel them into a higher orbit. (scienceblogs.com)
- For this match, it's Recharger vs. Nonrecharger, and the prize is a ride into polar orbit aboard a rocket launched from Baikonar, Ukraine, in May. (wired.com)
- A tiny Spanish civilian research satellite was also placed successfully into orbit by the rocket, which was launched from the European Space Agency in Kourou. (chinadaily.com.cn)
- A few minutes after the launch, the Antares rocket was safely in orbit, prompting cheers and sighs of relief on the ground. (economist.com)
- The space lab made the journey into orbit atop a Long March 2F rocket. (bbc.co.uk)
- The three-stage Long March3A rocket left its payload in an egg-shaped transfer orbit with an inclinationof 55 degrees. (space.com)
- Your orbit is entirely determined by what your rocket provider has sold you. (oreilly.com)
Transfer orbit2
- When the craft crosses the equator, the upper stage is fired to raise the spacecraft's apogee to geostationary altitude (and often reduce the inclination of the transfer orbit, as well). (wikipedia.org)
- The main disadvantage of fuzzy orbits is that whilst a normal Hohmann transfer orbit will take 3 days, a fuzzy orbit can take months or years. (everything2.com)
GEOSYNCHRONOUS ORBIT1
- Compare GEOSYNCHRONOUS ORBIT . (encyclopedia.com)
Solar system3
- Last summer, I wrote a piece on the search for small solar system objects that might, theoretically, circle the Sun inside Mercury's orbit. (slate.com)
- In physics, an orbit is the gravitationally curved path of an object around a point in space, for example the orbit of a planet around the center of a star system, such as the solar system. (thenextweb.com)
- First, he found that the orbits of the planets in our Solar System are elliptical, not circular (or epicyclic), as had previously been believed, and that the Sun is not located at the center of the orbits, but rather at one focus. (wikipedia.org)
Planets4
- orbits of planets are typically elliptical. (thenextweb.com)
- Some planets can be orbited by approaching them slowly. (destructoid.com)
- Astronomers have discovered that rocky, terrestrial planets might orbit many, if not most, of the nearby sun-like stars in the disk of our galaxy. (redorbit.com)
- Two very different planets that are very near to each other have been discovered orbiting the same distant star. (smh.com.au)
Polar2
- polar orbit An orbit which is inclined at 45° or more to the equatorial plane. (encyclopedia.com)
- At the hobbyist level, you're going to most likely get a standard 250km or so nearly circular orbit, either equatorial or polar. (oreilly.com)
Kilometers3
- But the equation told us that higher v means a lower orbit by almost two kilometers. (scienceblogs.com)
- Researchers in China have teleported a photon from the ground to a satellite orbiting more than 500 kilometers above. (technologyreview.com)
- But Micius changes all that because it orbits at an altitude of 500 kilometers, and for most of this distance, any photons making the journey travel through a vacuum. (technologyreview.com)
Altitude1
- It produces a higher altitude and thus ends up reducing v. So Gemini 10 moves forward, and simultaneously it starts rising to a higher orbit. (scienceblogs.com)
Interplanetary probes2
- When the Space Shuttle orbiter launched interplanetary probes such as Galileo , it used a parking orbit to deliver the probe to the right injection spot. (wikipedia.org)
- Compromise orbits, faster but needing more energy than true Hohmann orbits, have been used by interplanetary probes launched since the 1960s. (britannica.com)
Bony cavity1
- The orbit is the bony cavity in the skull that houses the globe of the eye (eyeball), the muscles that move the eye (the extraocular muscles), the lacrimal gland, and the blood vessels and nerves required to supply these structures. (britannica.com)
Circular3
- Well, they're in circular orbits, so they're experiencing the acceleration of uniform circular motion. (scienceblogs.com)
- What if the orbit of Darwinism should be a little too circular? (dictionary.com)
- Orbits are nearly elliptical or circular in shape and are very closely approximated by Kepler's laws of planetary motion. (dictionary.com)
Hohmann1
- The German engineer Walter Hohmann showed in 1925 that elliptical orbits tangent to the orbits of both the planet of departure and the target planet require the least fuel and energy. (britannica.com)
LOST ORBIT7
- LOST ORBIT centers around the exploration of space. (microsoft.com)
- Set in a world rich with comedy and tragedy, LOST ORBIT is a game filled with risk, loneliness, wonder, and death. (microsoft.com)
- That's the predicament protagonist Harrison finds himself dealing with in Lost Orbit . (destructoid.com)
- Described as a "dodge-'em-up" by developer PixelNAUTS, Lost Orbit doesn't fall neatly into any one established genre. (destructoid.com)
- Risk and reward are central to Lost Orbit 's design, and that comes through in the boost ability. (destructoid.com)
- It captures the science fiction feel with its drifting electronic melodies, but also has higher energy sections that set the stage for Lost Orbit 's fast action. (destructoid.com)
- All in all, Lost Orbit is a winner. (destructoid.com)
Reach orbit1
- Scientists have been waiting since 2009 for OCO to reach orbit. (yahoo.com)
Final orbit1
- China's third manned space mission reached its final orbit early on Friday where astronauts preparing for the country's first spacewalk enjoyed spicy food and the convenience of an onboard toilet. (france24.com)
Virgin Orbit3
- In March 2017, Virgin Galactic , a private space tourism company owned by British entrepreneur Richard Branson, announced the spinoff of a separate firm called Virgin Orbit. (space.com)
- Virgin Orbit is a spinoff company from the space tourism company Virgin Galactic. (space.com)
- Virgin Orbit aims to build 24 new rockets annually from its production center in Long Beach, California, according to the company's website. (space.com)
Stable orbit1
- The default value for Orbit Around is 0, which results in a stable orbit. (apple.com)
Moon4
- Parking orbit for one of the early Ranger missions to the Moon. (wikipedia.org)
- The trick with a fuzzy orbit is to try to arrange that the vehicle 's orbit is such that the moon pulls on it and gives it a little extra energy and momentum each time it goes past. (everything2.com)
- Additionally, you must be reasonably close to the moon to start with for it to perturb your orbit enough for this to work. (everything2.com)
- The two probes are scheduled to enter orbit around the moon over New Year's weekend. (nypost.com)
Gravity2
- Isaac Newton demonstrated that Kepler's laws were derivable from his theory of gravitation and that, in general, the orbits of bodies subject to gravity were conic sections (this assumes that the force of gravity propagates instantaneously). (wikipedia.org)
- In relativity theory, orbits follow geodesic trajectories which are usually approximated very well by the Newtonian predictions (except where there are very strong gravity fields and very high speeds) but the differences are measurable. (wikipedia.org)
Planet's surface2
- geostationary orbit Location of an artificial satellite so that it remains above the same point on a planet's surface because it completes one orbit in the same time it takes that planet to rotate once on its axis. (encyclopedia.com)
- The probe also carries a complex digital camera called the Mercury Dual Imaging System, which features a wide angle, multi-spectral camera for observing the different types of rock on the planet and a narrow-angle camera that will capture 98 percent of the planet's surface as MESSENGER completes its 12-hour orbits. (popularmechanics.com)
Missions3
- An upgrade to the second stage (ESC-B) will have multiple restart capability, so future missions may use parking orbits. (wikipedia.org)
- [4] Although several other missions since then have traveled to Lagrange points, they typically have used the related non-periodic variations called Lissajous orbits rather than an actual halo orbit. (wikipedia.org)
- All the SpLAN orbiting nodes are envisioned as simple, lightweight, standard hardware with minimal new infrastructure required for new missions, the ability to route past damage in that time-honoured IP fashion, and lots of useful interoperability with existing systems. (zdnet.com)
HEASARC1
- This table was first created by the HEASARC in August 2012 based on a machine-readable version of the Exoplanet Orbit Database which was obtained from the authors' web site ( http://exoplanets.org ), file exoplanets.csv. (nasa.gov)
Navigation4
- China launched its secondsatellite in less than three days Friday when a Long March 3A rocketsuccessfully delivered a navigation craft into orbit. (space.com)
- The Orbit is a 1.8 by 0.6-inch (4.6 by 1.5 centimeters) device that has a display screen and a single navigation button. (livescience.com)
- You simply press the navigation button once, make sure the device is charged and then download the accompanying Runtastic Me mobile app, which is designed specifically for the Orbit. (livescience.com)
- When you press the navigation button once, the Orbit will show you the time of day, and when you press it subsequent times, the device will display how many steps you've taken, how many calories you've burned and how many "active minutes" (of walking, running, etc.) you had that day. (livescience.com)
Observatory1
- NASA's Orbiting Carbon Observatory-2 mission (OCO-2) launches from Vandenberg Air Force Base, in California July 2, 2014. (yahoo.com)
Satellite12
- A parking orbit is a temporary orbit used during the launch of a satellite or other space probe . (wikipedia.org)
- Because halo orbits tend to be unstable, stationkeeping is required to keep a satellite on the orbit. (wikipedia.org)
- A team of science students at each site is vying to become the world's first to put its own satellite into orbit. (wired.com)
- D-Sat is a small satellite equipped with a dedicated propulsive device to remove it from orbit in a quick, direct, and controlled way at the end of its mission. (kickstarter.com)
- We look at what conditions your satellite must endure, how to test your satellite, and what launch, ground and orbit support you will need. (oreilly.com)
- Satellite observation and control networks in China and France yesterday successfully tracked the orbiting of a satellite launched by the French Government. (chinadaily.com.cn)
- to send into orbit, as a satellite. (dictionary.com)
- A 'science orbit' is when a satellite revolves in a near circle pattern very close around a planetary body's atmosphere . (everything2.com)
- China launches space lab Jump to media player China has launched into orbit its first space laboratory, Tiangong-1, from the Jiuquan Satellite Launch Centre in Gansu Province. (bbc.co.uk)
- Such an orbit lasts (because of drag by the tenuous ionosphere) from 3 to 16 weeks before the satellite will suffer a fiery reentry. (oreilly.com)
- In physics, an orbit is the gravitationally curved trajectory of an object, such as the trajectory of a planet around a star or a natural satellite around a planet. (wikipedia.org)
- Where one body is much more massive than the other (as is the case of an artificial satellite orbiting a planet), it is a convenient approximation to take the center of mass as coinciding with the center of the more massive body. (wikipedia.org)
Cubesats1
- This would put the company in a good position to potentially launch some of the many thousands of cubesats expected to need rides to orbit in the next few years, as companies like SpaceX and Planet aim to create space-based networks that can provide internet access and global-imaging capabilities. (space.com)
20161
- VIDEO: See what it's like to ride the world's longest tunnel slide, which was added to the ArcelorMittal Orbit in 2016. (timeout.com)
Smartphone1
- Until we get a fully transparent display, the Orbit smartphone will have to do! (yankodesign.com)
Typically1
- its 10,000-year orbit typically takes it to far greater distances. (caltech.edu)
International Corp1
- Hauppauge-based Orbit International Corp. has received an order valued at more than $600,000 for panels for the E-2 Hawkeye aircraft, the company announced Friday morning. (newsday.com)
Planet6
- Mission: activate onboard systems to make your way through the ship to the space hangar zone and navigate 'Aurora' dropship from the martian orbit toward landing site on the planet. (microsoft.com)
- All makes sense to me - but the SpLAN will be orbiting a planet full of people who are very good at hacking IP-based systems. (zdnet.com)
- In their paper, the authors use the Data Explorer to generate publication-ready plots, giving three examples of the signatures of exoplanet migration and dynamical evolution: They illustrate the character of the apparent correlation between mass and period in exoplanet orbits, the different selection biases between radial velocity and transit surveys, and that the multi-planet systems show a distinct semi-major-axis distribution from apparently singleton systems. (nasa.gov)
- In her debut novel Winter's Orbit , Everina Maxwell rockets this surefire premise into space, uniting Prince Kiem (lesser royal of the Iskat Empire) in a political marriage with Count Jainan (from vassal planet Thea) following the unexpected and tragic death of Jainan's husband, Prince Taam. (npr.org)
- It circles the star about every 14 days, while the outer planet takes 16 days to make its orbit. (smh.com.au)
- This video chronicles some of the major events that occurred on this planet during a single Neptune orbit. (hubblesite.org)
Tracks2
- Hedersleben tracks, including a track from Orbit, have been featured in the upcoming action/heist movie Diamond Cartel (starring Armand Assante and Bolo Yeung) and dark thriller The Devil's Domain starring Michael Madsen! (musiciansfriend.com)
- One thing that confused me about the Orbit was that the company claims that the device tracks "happiness" and "ambient lighting. (livescience.com)
Neptune1
- In a dramatic vindication of classical mechanics, in 1846 Urbain Le Verrier was able to predict the position of Neptune based on unexplained perturbations in the orbit of Uranus. (wikipedia.org)
Probe1
- Tonight, if all goes well , NASA's MESSENGER probe will complete a seven-year journey by entering orbit of Mercury. (popularmechanics.com)
Behavior4
- Similar to the Attracted To behavior, the Orbit Around behavior's default parameter settings give the object sufficient initial velocity to orbit around another object in a perfect circle. (apple.com)
- Behaviors such as Attractor and Repel applied to nearby objects may disrupt an object with the Orbit Around behavior applied to it. (apple.com)
- In the Layers list, you can also drag the target object onto the Orbit Around behavior. (apple.com)
- 4 is spiking-busting whereas earlier in picard orbit its behavior is chaotic. (springer.com)
Scenarios1
- There may well be valid scenarios here the Orbit bundle is not appropriate but projects are strongly urged to share as much as possible. (eclipse.org)
Successfully2
- China successfully launched two "taikonauts" into orbit on Wednesday, marking the country's second crewed foray into space. (newscientist.com)
- However, once the plane successfully reached orbit, the broadcast was ended "at the request of our customer. (redorbit.com)
Socket2
- The eye is protected from mechanical injury by being enclosed in a socket, or orbit, which is made up of portions of several of the bones of the skull to form a four-sided pyramid, the apex of which points back into the head. (britannica.com)
- the eye socket," from Old French orbite or directly from Medieval Latin orbita , transferred use of Latin orbita "wheel track, beaten path, rut, course, orbit" (see orb ). (dictionary.com)
Automated Transfe1
- In a literal example of a parking orbit, the Automated Transfer Vehicle (ATV) could park for several months in orbit while waiting to rendezvous with the International Space Station . (wikipedia.org)