Planets. Medical search

Celestial bodies orbiting around the sun or other stars.

Planet that is the third in order from the sun. It is one of the four inner or terrestrial planets of the SOLAR SYSTEM.

Creation and development of bodies within solar systems, includes study of early planetary geology.

The science concerned with celestial bodies and the observation and interpretation of the radiation received in the vicinity of the earth from the component parts of the universe (McGraw Hill Dictionary of Scientific and Technical Terms, 5th ed)

Large bodies consisting of self-luminous gas held together by their own gravity. (From McGraw Hill Dictionary of Scientific and Technical Terms, 6th ed)

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.

The environment outside the earth or its atmosphere. The environment may refer to a closed cabin (such as a space shuttle or space station) or to space itself, the moon, or other planets.

Aggregates of matter in outer space, such as stars, planets, comets, etc. and the properties and processes they undergo.

Small solar system planetary bodies including asteroids. Most asteroids are found within the gap lying between the orbits of Mars and Jupiter.

The first planet in order from the sun. It has no known natural satellites. It is one of the four inner or terrestrial planets of the 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)

The eighth planet in order from the sun. It is one of the five outer planets of the solar system. Its two natural satellites are Nereid and Triton.

The state that distinguishes organisms from inorganic matter, manifested by growth, metabolism, reproduction, and adaptation. It includes the course of existence, the sum of experiences, the mode of existing, or the fact of being. Over the centuries inquiries into the nature of life have crossed the boundaries from philosophy to biology, forensic medicine, anthropology, etc., in creative as well as scientific literature. (Random House Unabridged Dictionary, 2d ed; Dr. James H. Cassedy, NLM History of Medicine Division)

The seventh planet in order from the sun. It is one of the five outer planets of the solar system. It has five known natural satellites.

Any solid objects moving in interplanetary space that are smaller than a planet or asteroid but larger than a molecule. Meteorites are any meteoroid that has fallen to a planetary surface. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)

The natural satellite of the planet Earth. It includes the lunar cycles or phases, the lunar month, lunar landscapes, geography, and soil.

The gaseous envelope surrounding a planet or similar body. (From Random House Unabridged Dictionary, 2d ed)

The fourth planet in order from the sun. Its two natural satellites are Deimos and Phobos. It is one of the four inner or terrestrial planets of the solar system.

Water waves caused by the gravitational interactions between the EARTH; MOON; and SUN.

The ninth planet in order from the sun. It is one of the five outer planets of the solar system. Its only natural satellite is Charon.

The fifth planet in order from the sun. It is one of the five outer planets of the solar system. Its sixteen natural satellites include Callisto, Europa, Ganymede, and Io.

The solid substance formed by the FREEZING of water.

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.

Any type of variation in the appearance of energy output of the sun. (NASA Thesaurus, 1994)

The origin of life. It includes studies of the potential basis for life in organic compounds but excludes studies of the development of altered forms of life through mutation and natural selection, which is BIOLOGICAL EVOLUTION.

High-energy radiation or particles from extraterrestrial space that strike the earth, its atmosphere, or spacecraft and may create secondary radiation as a result of collisions with the atmosphere or spacecraft.

Devices, manned and unmanned, which are designed to be placed into an orbit about the Earth or into a trajectory to another celestial body. (NASA Thesaurus, 1988)

A method of separation of two or more substances by repeated distribution between two immiscible liquid phases that move past each other in opposite directions. It is a form of liquid-liquid chromatography. (Stedman, 25th ed)

The science of the earth and other celestial bodies and their history as recorded in the rocks. It includes the study of geologic processes of an area such as rock formations, weathering and erosion, and sedimentation. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)

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.

In search of planets and life around other stars. (1/47)

The discovery of over a dozen low-mass companions to nearby stars has intensified scientific and public interest in a longer term search for habitable planets like our own. However, the nature of the detected companions, and in particular whether they resemble Jupiter in properties and origin, remains undetermined. (+info)

Nebular and auroral emission lines of [Cl III] in the optical spectra of planetary nebulae. (2/47)

Electron impact excitation rates in Cl III, recently determined with the R-matrix code, are used to calculate electron temperature (T(e)) and density (N(e)) emission line ratios involving both the nebular (5517.7, 5537.9 A) and auroral (8433.9, 8480.9, 8500.0 A) transitions. A comparison of these results with observational data for a sample of planetary nebulae, obtained with the Hamilton Echelle Spectrograph on the 3-m Shane Telescope, reveals that the R(1) = I(5518 A)/I(5538 A) intensity ratio provides estimates of N(e) in excellent agreement with the values derived from other line ratios in the echelle spectra. This agreement indicates that R(1) is a reliable density diagnostic for planetary nebulae, and it also provides observational support for the accuracy of the atomic data adopted in the line ratio calculations. However the [Cl iii] 8433.9 A line is found to be frequently blended with a weak telluric emission feature, although in those instances when the [Cl iii] intensity may be reliably measured, it provides accurate determinations of T(e) when ratioed against the sum of the 5518 and 5538 A line fluxes. Similarly, the 8500.0 A line, previously believed to be free of contamination by the Earth's atmosphere, is also shown to be generally blended with a weak telluric emission feature. The [Cl iii] transition at 8480.9 A is found to be blended with the He i 8480.7 A line, except in planetary nebulae that show a relatively weak He i spectrum, where it also provides reliable estimates of T(e) when ratioed against the nebular lines. Finally, the diagnostic potential of the near-UV [Cl iii] lines at 3344 and 3354 A is briefly discussed. (+info)

The occurrence of Jovian planets and the habitability of planetary systems. (3/47)

Planets of mass comparable to or larger than Jupiter's have been detected around over 50 stars, and for one such object a definitive test of its nature as a gas giant has been accomplished with data from an observed planetary transit. By virtue of their strong gravitational pull, giant planets define the dynamical and collisional environment within which terrestrial planets form. In our solar system, the position and timing of the formation of Jupiter determined the amount and source of the volatiles from which Earth's oceans and the source elements for life were derived. This paper reviews and brings together diverse observational and modeling results to infer the frequency and distribution of giant planets around solar-type stars and to assess implications for the habitability of terrestrial planets. (+info)

Planetary exploration in the time of astrobiology: protecting against biological contamination. (4/47)

These are intriguing times in the exploration of other solar-system bodies. Continuing discoveries about life on Earth and the return of data suggesting the presence of liquid water environments on or under the surfaces of other planets and moons have combined to suggest the significant possibility that extraterrestrial life may exist in this solar system. Similarly, not since the Viking missions of the mid-1970s has there been as great an appreciation for the potential for Earth life to contaminate other worlds. Current plans for the exploration of the solar system include constraints intended to prevent biological contamination from being spread by solar-system exploration missions. (+info)

Mass spectrometry in the U.S. space program: past, present, and future. (5/47)

Recent years have witnessed significant progress on the miniaturization of mass spectrometers for a variety of field applications. This article describes the development and application of mass spectrometry (MS) instrumentation to support of goals of the U.S. space program. Its main focus is on the two most common space-related applications of MS: studying the composition of planetary atmospheres and monitoring air quality on manned space missions. Both sets of applications present special requirements in terms of analytical performance (sensitivity, selectivity, speed, etc.), logistical considerations (space, weight, and power requirements), and deployment in perhaps the harshest of all possible environments (space). The MS instruments deployed on the Pioneer Venus and Mars Viking Lander missions are reviewed for the purposes of illustrating the unique features of the sample introduction systems, mass analyzers, and vacuum systems, and for presenting their specifications which are impressive even by today's standards. The various approaches for monitoring volatile organic compounds (VOCs) in cabin atmospheres are also reviewed. In the past, ground-based GC/MS instruments have been used to identify and quantify VOCs in archival samples collected during the Mercury, Apollo, Skylab, Space Shuttle, and Mir missions. Some of the data from the more recent missions are provided to illustrate the composition data obtained and to underscore the need for instrumentation to perform such monitoring in situ. Lastly, the development of two emerging technologies, Direct Sampling Ion Trap Mass Spectrometry (DSITMS) and GC/Ion Mobility Spectrometry (GC/IMS), will be discussed to illustrate their potential utility for future missions. (+info)

Gas chromatographic separation of nitrogen, oxygen, argon, and carbon monoxide using custom-made porous polymers from high purity divinylbenzene. (6/47)

Existing porous polymers were surveyed for their ability to separate the subject gases. Certain products that showed more promise than others were synthesized and the existing synthetic procedures studied and modified to produce new polymers with enhanced ability to separate the subject gases. Evaluation of the porous polymers was carried out practically by gas chromatography at ambient temperature. The modified synthetic procedures were somewhat simpler than the originals. The new porous polymers made with high purity divinylbenzene enabled use of shorter columns to obtain the separations desired. (+info)

Formation of giant planets by fragmentation of protoplanetary disks. (7/47)

The evolution of gravitationally unstable protoplanetary gaseous disks has been studied with the use of three-dimensional smoothed particle hydrodynamics simulations with unprecedented resolution. We have considered disks with initial masses and temperature profiles consistent with those inferred for the protosolar nebula and for other protoplanetary disks. We show that long-lasting, self-gravitating protoplanets arise after a few disk orbital periods if cooling is efficient enough to maintain the temperature close to 50 K. The resulting bodies have masses and orbital eccentricities similar to those of detected extrasolar planets. (+info)

The onset of planet formation in brown dwarf disks. (8/47)

The onset of planet formation in protoplanetary disks is marked by the growth and crystallization of sub-micrometer-sized dust grains accompanied by dust settling toward the disk mid-plane. Here, we present infrared spectra of disks around brown dwarfs and brown dwarf candidates. We show that all three processes occur in such cool disks in a way similar or identical to that in disks around low- and intermediate-mass stars. These results indicate that the onset of planet formation extends to disks around brown dwarfs, suggesting that planet formation is a robust process occurring in most young circumstellar disks. (+info)

I'm sorry for any confusion, but "planets" is not a medical term. It is a term used in astronomy to refer to celestial bodies that orbit the sun and meet certain criteria, such as having cleared their orbit of other debris. If you have any questions about medical terminology or concepts, I'd be happy to try to help!

Planetary evolution is a field of study that focuses on the processes that have shaped the formation, development, and changes of planets and other celestial bodies over time. This encompasses various scientific disciplines, including astronomy, astrobiology, geology, and atmospheric science. The study of planetary evolution helps scientists understand how planets form, how they change over time, and the conditions that allow for the development of life.

The process of planetary evolution can be driven by a variety of factors, including:

1. Formation: Planets form from a protoplanetary disk, a rotating disk of gas and dust surrounding a young star. Over time, solid particles in the disk collide and stick together to form larger and larger bodies, eventually leading to the formation of planets.
2. Internal differentiation: As planets grow, their interiors differentiate into layers based on density, with heavier materials sinking towards the center and lighter materials rising towards the surface. This process can lead to the formation of a core, mantle, and crust.
3. Geological activity: Planetary evolution is also influenced by geological processes such as volcanism, tectonics, and erosion. These processes can shape the planet's surface, create mountain ranges, and carve out valleys and basins.
4. Atmospheric evolution: The evolution of a planet's atmosphere is closely tied to its geological activity and the presence of volatiles (gases that easily vaporize). Over time, the composition of a planet's atmosphere can change due to processes such as outgassing from the interior, chemical reactions, and interactions with the solar wind.
5. Climate evolution: The climate of a planet can also evolve over time due to changes in its orbit, axial tilt, and atmospheric composition. These factors can influence the amount of sunlight a planet receives and the greenhouse effect, which can lead to global warming or cooling.
6. Impact events: Collisions with other celestial bodies, such as asteroids and comets, can significantly impact a planet's evolution by causing large-scale changes to its surface and atmosphere.
7. Life: On planets where life emerges, biological processes can also play a role in shaping the planet's environment and influencing its evolution. For example, photosynthetic organisms can produce oxygen, which can alter the composition of a planet's atmosphere.

Understanding the various factors that contribute to a planet's evolution is crucial for understanding the formation and development of planetary systems and searching for potentially habitable exoplanets.

Astronomy is not a medical term, but rather it is a branch of science that deals with the study of celestial objects, phenomena, and processes outside the Earth's atmosphere. It involves observing stars, planets, galaxies, and other cosmic entities, and using physical laws to understand their properties and behavior.

Therefore, there is no medical definition for astronomy. However, it is worth noting that some areas of astronomy may have applications in medicine, such as the use of medical imaging techniques that were developed based on principles used in radio astronomy.

I'm sorry for any confusion, but "Stars, Celestial" is not a medical term. The term "stars" or "celestial bodies" is used in astronomy to refer to large, luminous spheres of plasma held together by gravity. They produce light and heat from the fusion of hydrogen into helium at their cores.

If you have any questions related to medical terminology, I'd be happy to help!

Exobiology, also known as astrobiology, is the branch of biology and astronomy that deals with the search for extraterrestrial life and the study of the origin, evolution, distribution, and future of life in the universe. It involves the examination of the conditions necessary for life to exist, such as the presence of water, organic molecules, and a stable energy source, as well as the identification and characterization of extremophiles, organisms that can survive under extreme conditions on Earth that may be similar to those found on other planets or moons. Exobiologists also use data from space missions and telescopes to search for biosignatures, or signs of life, in the atmospheres of distant exoplanets.

The term "extraterrestrial environment" is not typically used in a medical context, but rather in the fields of astronomy and astrobiology. It generally refers to any physical environment outside of Earth, including the surfaces and atmospheres of other planets, moons, asteroids, comets, and interstellar space.

In a broader sense, one might use the term "extraterrestrial environment" to refer to any physical conditions that are not found naturally on Earth, such as extreme temperatures, radiation levels, or atmospheric compositions. However, this is not a standard medical definition.

It's worth noting that there may be potential health implications for humans who travel to extraterrestrial environments, as they would be exposed to new and potentially hazardous conditions. As such, space medicine is a growing field of research that aims to understand and mitigate the health risks associated with space travel.

Astronomical phenomena are observable events that occur in the universe beyond our planet Earth. These can include a wide range of occurrences such as:

1. The movement and positions of celestial bodies like stars, planets, asteroids, comets, and galaxies.
2. Changes in the brightness or appearance of celestial objects, such as eclipses, transits, novae, and supernovae.
3. Phenomena related to the life cycles of stars, like stellar evolution, neutron star formation, black hole creation, etc.
4. Natural phenomena that occur in the interstellar medium or intergalactic space, such as nebulae, pulsars, quasars, and active galactic nuclei.
5. Gravitational effects on light, such as gravitational lensing and gravitational waves.
6. Phenomena related to the structure and evolution of the universe, like cosmic microwave background radiation and dark matter.

These phenomena are studied by astronomers using various observational techniques and instruments, including telescopes that detect different parts of the electromagnetic spectrum, as well as space-based observatories and astrophysical experiments.

I'm sorry for any confusion, but the term "minor planets" is not typically used in medical definitions. It is a term from astronomy that refers to small celestial bodies orbiting the Sun, which are smaller than planets and dwarf planets. They are also commonly known as asteroids. If you have any questions related to medical terminology or health concerns, I would be happy to help with those instead!

I'm sorry for any confusion, but "Solar System" is not a medical term. It refers to the astronomical system that includes our star, the Sun, and the objects that orbit it, such as planets, dwarf planets, asteroids, comets, and meteoroids. The Solar System is located in the Milky Way galaxy. If you have any medical terms or concepts you would like me to define or explain, I'd be happy to help!

I'm sorry for any confusion, but "Neptune" is not a term commonly used in medical definitions. Neptune is the eighth and farthest known planet from the Sun in the Solar System. It is the fourth-largest planet by diameter and the third-largest by mass.

If you have any questions related to medical terminology or health concerns, I'd be happy to help with those instead!

Defining "life" is a complex question that has been debated by philosophers, scientists, and theologians for centuries. From a biological or medical perspective, life can be defined as a characteristic that distinguishes physical entities that do have biological processes, such as growth, reproduction, and response to stimuli, from those that do not, either because such functions have ceased (death), or because they never had such functions and are classified as inanimate.

The National Institutes of Health (NIH) defines life as "the condition that distinguishes animals and plants from inorganic matter, including the capacity for growth, reproduction, functional activity, and continual change preceding death."

It's important to note that there is no one universally accepted definition of life, and different fields and disciplines may have slightly different definitions or criteria.

I'm sorry for any confusion, but the term 'Uranus' is not a medical concept or condition. It is the seventh planet from the Sun in our solar system. If you have any medical questions or terms you would like defined, I'd be happy to help!

I'm sorry for any confusion, but "meteoroids" is not a term used in medical definitions. It is a term from the field of astronomy. Meteoroids are small particles or bits of rock that are traveling in space. When they enter the Earth's atmosphere, they can become meteors (also known as "shooting stars") and can sometimes make it to the ground as meteorites.

I'm sorry for any confusion, but "Moon" is not a commonly used medical term. The moon is a natural satellite that orbits around the Earth and is not related to medical terminology or anatomy. If you have any questions about medical definitions or topics, I would be happy to help!

In medical terms, the term "atmosphere" is not typically used as a standalone definition or diagnosis. However, in some contexts, it may refer to the physical environment or surroundings in which medical care is provided. For example, some hospitals and healthcare facilities may have different atmospheres depending on their specialties, design, or overall ambiance.

Additionally, "atmosphere" may also be used more broadly to describe the social or emotional climate of a particular healthcare setting. For instance, a healthcare provider might describe a patient's home atmosphere as warm and welcoming, or a hospital ward's atmosphere as tense or chaotic.

It is important to note that "atmosphere" is not a medical term with a specific definition, so its meaning may vary depending on the context in which it is used.

I'm sorry for any confusion, but "Mars" is not a medical term. It is the fourth planet from the Sun in our solar system and is often called the "Red Planet" due to its reddish appearance from iron oxide (rust) on its surface. If you have any medical questions or terms you would like defined, I'd be happy to help!

I believe there might be a misunderstanding in your question. In medical terms, there is no definition for "tidal waves." However, the term "tidal wave" is commonly used in layman's language to refer to massive waves caused by earthquakes or underwater landslides, which are technically called tsunamis. Tsunamis are rapid, long-wavelength sea waves that can cause extensive coastal damage and loss of life.

If you meant a different term related to medicine or healthcare, please clarify so I can provide an accurate definition.

I'm sorry for any confusion, but "Pluto" is not a term used in medical definitions. It is the ninth planet from the Sun in our solar system, according to its discovery in 1930. However, in 2006, the International Astronomical Union (IAU) redefined the definition of a planet and Pluto did not meet all the criteria, so it's now classified as a "dwarf planet."

If you have any medical concerns or questions, I would be happy to help if you could provide more information!

I'm sorry for any confusion, but "Jupiter" is not a medical term. Jupiter is the largest planet in our solar system, known for its Great Red Spot, a storm that has been raging on the planet for at least 300 years. If you have any medical concerns or questions, I'd be happy to help answer those!

"Ice" is a slang term that is commonly used to refer to crystal methamphetamine, which is a powerful and highly addictive stimulant drug. It gets its name from its crystalline appearance. Medically, methamphetamine is used in the treatment of attention deficit hyperactivity disorder (ADHD) and obesity, but only under strict medical supervision due to its potential for abuse and serious side effects.

Crystal methamphetamine, on the other hand, is an illegal drug that is produced and sold on the black market. It can be smoked, injected, snorted or swallowed, and it produces a euphoric rush followed by a long-lasting high. Long-term use of crystal methamphetamine can lead to serious health consequences, including addiction, psychosis, dental problems (meth mouth), memory loss, aggression, and cardiovascular damage.

I'm sorry for any confusion, but "space simulation" is not a term typically used in medical definitions. It is a concept more commonly found in the fields of aerospace engineering and virtual reality technology. In those contexts, space simulation refers to the creation of artificial environments intended to replicate various aspects of outer space, such as zero gravity or the appearance of celestial bodies. These simulations can be used for training astronauts, testing spacecraft and equipment, or for entertainment purposes like video games. If you have any questions related to medical definitions, I'd be happy to help with those!

I'm sorry for any confusion, but "solar activity" is not a term typically used in medical definitions. Solar activity refers to the various phenomena that occur on the Sun, including solar flares, coronal mass ejections (CMEs), and solar wind. These events involve the release of energy and charged particles from the Sun's atmosphere and can have effects on space weather and technological systems in near-Earth space. If you have any questions related to medical terminology or health-related topics, I would be happy to help with those!

Biogenesis is the biological process by which living organisms reproduce or generate new individuals through reproduction. This term also refers to the idea that a living organism can only arise from another living organism, and not from non-living matter. It was first proposed as a hypothesis by Thomas Henry Huxley in 1870, and later supported by the work of Louis Pasteur in the mid-19th century, who demonstrated that microorganisms could not spontaneously generate from non-living matter. This concept is now widely accepted in biology and is a fundamental principle of modern cell theory.

Cosmic radiation refers to high-energy radiation that originates from space. It is primarily made up of charged particles, such as protons and electrons, and consists of several components including galactic cosmic rays, solar energetic particles, and trapped radiation in Earth's magnetic field (the Van Allen belts).

Galactic cosmic rays are high-energy particles that originate from outside our solar system. They consist mainly of protons, with smaller amounts of helium nuclei (alpha particles) and heavier ions. These particles travel at close to the speed of light and can penetrate the Earth's atmosphere, creating a cascade of secondary particles called "cosmic rays" that can be measured at the Earth's surface.

Solar energetic particles are high-energy charged particles, mainly protons and alpha particles, that are released during solar flares or coronal mass ejections (CMEs) from the Sun. These events can accelerate particles to extremely high energies, which can pose a radiation hazard for astronauts in space and for electronic systems in satellites.

Trapped radiation in Earth's magnetic field is composed of charged particles that are trapped by the Earth's magnetic field and form two doughnut-shaped regions around the Earth called the Van Allen belts. The inner belt primarily contains high-energy electrons, while the outer belt contains both protons and electrons. These particles can pose a radiation hazard for satellites in low Earth orbit (LEO) and for astronauts during spacewalks or missions beyond LEO.

Cosmic radiation is an important consideration for human space exploration, as it can cause damage to living tissue and electronic systems. Therefore, understanding the sources, properties, and effects of cosmic radiation is crucial for ensuring the safety and success of future space missions.

I'm sorry for any confusion, but "spacecraft" is not a term typically used in medical definitions. A spacecraft is a vehicle or machine designed to fly in outer space. It may be used to transport humans or cargo to and from space stations, conduct scientific research, or explore other celestial bodies such as the moon, planets, and asteroids. If you have any questions related to medical terminology, I'd be happy to help!

Countercurrent distribution is a laboratory technique used in the separation and purification of chemical compounds, including drugs and natural products. It is based on the principle of countercurrent flow, where two immiscible liquids (such as an organic solvent and water) are passed through a series of connected tubes in opposite directions.

In the context of biochemistry and pharmacology, countercurrent distribution is often used to purify and analyze compounds that are present in complex biological mixtures, such as blood or plant extracts. The mixture is first loaded onto the top of the column, and then a series of solvent washes and extractions are performed to separate the components based on their partition coefficients between the two liquids.

The technique allows for the separation of compounds with similar chemical properties but different partition coefficients, making it a valuable tool in the analysis of complex mixtures. The distribution of each component is plotted as a function of the tube number, resulting in a characteristic elution profile that can be used to identify and quantify the compound of interest.

In summary, countercurrent distribution is a laboratory technique for separating and purifying chemical compounds based on their partition coefficients between two immiscible liquids passed through connected tubes in opposite directions.

I'm sorry for any confusion, but "geology" is not a medical term. It is a scientific discipline that deals with the Earth's physical structure and substance, its history, and the processes that act on it. If you have any questions about medical terminology or concepts, I would be happy to help!

Chemical evolution is a term that refers to the set of processes thought to have given rise to life from simple inorganic compounds. It is a prebiotic process, meaning it occurred before the existence of life. The fundamental idea behind chemical evolution is that simple chemicals underwent a series of transformations, eventually leading to the formation of complex organic molecules necessary for life, such as amino acids, nucleotides, and lipids. These building blocks then came together to form the first self-replicating entities, which are considered the precursors to modern cells.

The concept of chemical evolution is based on several key observations and experiments. For example, it has been shown that simple inorganic compounds can be transformed into more complex organic molecules under conditions believed to have existed on early Earth, such as those found near hydrothermal vents or in the presence of ultraviolet radiation. Additionally, experiments using simulated prebiotic conditions have produced a variety of biologically relevant molecules, supporting the plausibility of chemical evolution.

It is important to note that chemical evolution does not necessarily imply that life emerged spontaneously or randomly; rather, it suggests that natural processes led to the formation of complex molecules that eventually gave rise to living organisms. The exact mechanisms and pathways by which this occurred are still subjects of ongoing research and debate in the scientific community.

The soil is many times as dry as the driest desert on planet Earth, the temperatures swing from one extreme to the other, and ... Mars Rover Discovers Faint Signals of Water on The Red Planet. Space08 May 2023. By Matt Williams, Universe Today ... And yet, theres ample evidence that the planet was once much warmer and wetter, with lots of flowing and standing water on its ...

https://www.sciencealert.com/mars-rover-discovers-faint-signals-of-water-on-the-red-planet

Discover amazing travel experiences with Lonely Planets insider tips, inspirational traveler stories and expert guidance from ... Lonely Planet, a Red Ventures company. All rights reserved. No part of this site may be reproduced without our written ...

https://www.lonelyplanet.com/articles

Links to public domain scores of The Planets: The Planets: Scores at the International Music Score Library Project The Planets ... So were going to do The Planets, and youve got to conduct." Adrian Boult The premiere of The Planets, conducted at Holsts ... The Planets has been taken as an influence by various rock bands, and for film scores such as those for the Star Wars series. ... Leo called the planet "the most fortunate star under which to be born"; Short calls Holsts Venus "one of the most sublime ...

https://en.wikipedia.org/wiki/The_Planets

No two planets could be confused(unless there are Trojan planets which share orbits but may be rare, and at anyrate might have ... while a second planet would be alpha Gem Ab-c.Similarly, planets discovered around star Bb in order would be alpha Gem Bb-b, ... followed by theclosest planet to the parent star, Gliese 876-d. The star HD160691?s planets(discovered so far) are, in order of ... Are they going to be planets withletter designations or dwarf planets with other designations? I think, as theysay in England, ...

https://www.space.com/6446-naming-extrasolar-planets.html

SETI Institute scientists have been part of the Kepler team since its inception. ...

https://www.seti.org/kepler-planets-gallery

kottke.org posts about planets. There Are Way More Rogue Planets Than We Thought. posted by Tim Carmody Jul 06, 2021 ... But rogue planets, by definition, dont orbit stars. So the way astronomers find them is a little different, requiring use of ... The way the heat from the sun contributes to the winds, how heat exchange works in each planet, and the interaction of those ... The new paper suggests the presence of a large population of Earth-sized rogue planets in the Milky Way. Its becoming clear ...

https://kottke.org/tag/planets

... with a focus on the conditions that make planets habitable. ... We perform comparative studies of planets in and out of our ... Our expertise lies in the detection and precise characterisation of extrasolar planets and in the modelling of planetary ... searching for small planets around cool dwarfs; the KESPRINT collaboration to characterise extrasolar planets detected by the ... This will place limits on the possible composition and structure of the planets and show, for example, whether they are ...

https://www.dlr.de/en/pf/about-us/departments/extrasolar-planets-and-atmospheres

Planet Nine Hypothesis Takes a Major Hit in New Study It used to be easy to know how many planets there were: nine. It had been ... Planets. Page 4. Citizen Astronomer Detects Ancient Failed Star With Unexpected Properties Astronomers have spotted about 2,000 ... NASA used Curiosity as a model for this new robot, but its instrument suite is upgraded to scour the red planet for signs of ... Astronomers Create Treasure Map to Find Proposed Planet Nine A new analysis supports the notion that theres something out ...

https://www.extremetech.com/tag/planets/page/4

... as the spacecraft left the planet behind and set forth on the cruise to Neptune Even at this extreme angle, Uranus retains the ... This view of Uranus was recorded by Voyager 2 on Jan 25, 1986, as the spacecraft left the planet behind and set forth on the ... This view of Uranus was recorded by Voyager 2 on Jan 25, 1986, as the spacecraft left the planet behind and set forth on the ...

https://www.nasa.gov/image-article/crescent-planet/

Lonely Planet puts travellers at the heart of everything we do, informing and inspiring them with trusted content for print and ... At Lonely Planet, our core values guide our evolution:. *. We pursue a vision of the world in which all are welcome. We believe ... At Lonely Planet, we believe travel opens the door to the greatest, most unforgettable experiences life can offer. And we have ... Lonely Planet, a Red Ventures company. All rights reserved. No part of this site may be reproduced without our written ...

https://www.lonelyplanet.com/about

Tag: planets 2016. Posted on July 19, 2016. July 23, 2016. by David Dickinson ... See All Five Naked Eye Planets in the Dusk Sky at Once. An Iphone solar system family portrait. Image credit and copyright: ... Venus: The bashful planet of the group, Venus is slowly appearing from behind the Sun low in the dusk and headed for a ... We had a similar lineup in the dawn sky earlier in 2016, as the Earth had all the inner planets in its forward-facing view - ...

https://www.universetoday.com/tag/planets-2016/

They predict that many other fast-spinning pulsars should also have planets. Two astronomers in the US, Aleksander Wolszczan ... Two planets found circling a distant pulsar formed from the remains of a star that was destroyed by the pulsar, according to a ... and Dale Frail, discovered the planets last year (New Scientist, … ... planets, predicts Stevens. Some other theories for the formation of planets around a pulsar invoke. a rare event, such as the ...

https://www.newscientist.com/article/mg13318092-900-science-planets-are-common-around-solitary-pulsars/

Fishing Planet® is a unique and highly realistic online first-person multiplayer fishing simulator developed by avid fishing ... Fishing Planet. Add-ons included. Fishing Planet: Christmas Magic PackFishing Planet: Holiday PackFishing Planet: Krampus ... Fishing Planet® is a unique and highly realistic online first-person multiplayer fishing simulator developed by avid fishing ... Fishing Planet® isnt just another game about fishing. Stunning eye-candy graphics, superb hydro and aerodynamics, realistic ...

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Welcome to your own pawn planet! This may not feel like a home yet but it will be, as soon as you clean it up and open your ...

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A Dweller on Two Planets, by Phylos the Thibetan (Frederick S. Oliver), [1894], full text etext at sacred-texts.com ... These are but major examples of what was set forth in "A DWELLER ON TWO PLANETS" in 1886, together with many more predictions ... A Dweller on Two Planets, by by Phylos the Thibetan (Frederick S. Oliver), [1894], at sacred-texts.com ... Today, my brother, the masses of humanity on this planet are awakened to the fact that their knowledge of life--the Great ...

https://sacred-texts.com/atl/dtp/dtp03.htm

Outer Planets Assessment Group. Resources. Jupiter Resources Documents *Forum on Concepts and Approaches for Jupiter Icy Moon ...

https://www.lpi.usra.edu/opag/resources/

Planet Money. Episode 674: We Cooked A Peacock. January 1, 2016 In the 1600s, a good spice rub was the ultimate display of ... Minu (left) and her younger sister Shumi (right) worked on the Planet Money mens t-shirt. Kainaz Amaria/NPR hide caption ... The container carrying the Planet Money womens T-shirts is loaded onto a ship in Cartagena, Colombia. Eric Helton for NPR hide ... The Planet Money peacock pie, in all its glory. Cameron Robert/NPR hide caption ...

https://www.npr.org/sections/money/127424471/trade/

Browse our printable Kindergarten Planets Worksheets resources for your classroom. Download free today! ...

https://www.teachervision.com/resources/worksheets/kindergarten/planets

Earth and Mars and the outer planets are Jupiter, Saturn, Uranus, and Neptune. I wouldnt count Pluto as a planet cause there ... The inner planets are the planets inside of the belt, and the outer planets (sometimes referred to as the Jovian Planets) are ... The inner planets are small, the outer planets are huge in comparison.The inner planets have rocky surfaces, the outer planets ... The inner planets are small, the outer planets are huge in comparison.The inner planets have rocky surfaces, the outer planets ...

https://www.answers.com/astronomy/What_is_between_inner_and_outer_planets

Although not every planet has a magnetic field, most of them do. ... Magnetic fields are common among the planets in our solar ... How do planets produce their own magnetic fields? The Inner Planets Illustration of the Earths magnetic field. Magnetic fields ... How Planets Produce Magnetic Fields. Magnetic fields are common among the planets in our solar system. Although not every ... For the inner planets in our solar system, a magnetic field is generated by the motion and composition of a planets core. The ...

https://www.worldatlas.com/space/how-planets-produce-magnetic-fields.html

Libre Planet and Libre Graphics. by mike Events This coming weekend (March 21-22) in Cambridge, Massachusetts the Free Software ... Saturday at Libre Planet, the Free Software Foundations annual conference, Creative Commons was honored to receive the FSFs ... Foundation is holding its annual meeting, dubbed the Libre Planet Conference. Many of CCs best friends and supporters will be ...

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Behind the Planet of the Apes (DVD). Image Entertainment. 1998.. *^ "Natalie Trundy: Monkey Business on the Planet of the Apes" ... Planet of the Apes at IMDb *Hunters Planet of the Apes Archive - Extensive fan site with information on all original films and ... Forgotten City of the Planet of the Apes ("Gladiators" & "Legacy"). *Treachery and Greed on the Planet of the Apes ("Horse Race ... Planet of the Apes Media Archive - Multi-media website. *The five sets of episodes repackaged as TV movies: *Back to the Planet ...

https://en.wikipedia.org/wiki/Planet_of_the_Apes_

Rogue Planets May Invalidate the Dark Matter Theory. By James Ayre Free-floating extrasolar planets, those that are not ... Space News Round-up: Magnetic Bubbles, Mega Blasts, Missing Mass & Mucho Rogue Planets {VIDEO}. By Michael Ricciardi ... These rogue planets orbit the galaxy directly, and in large enough numbers could explain the discrepancy of the gravitational ... Planets, More Plentiful than Stars, May Be Roaming the Galaxy, and 5] (An extra-special space goody:) A Supernova Sonata - ...

https://planetsave.com/articles/tag/rogue-planets/

"It is necessary to create awareness among employees how it is impacting the business as well as the planet they live in to save ... It is necessary to create awareness among employees,/b> how it is impacting the business as well as the planet they live in to ... Protect Our Planet. Accelerating our transition to a low-carbon future powered by renewables and clean energy. ... Weve set Scope 1, 2 and 3 carbon-reduction goals aligned with what science tells us is necessary to keep our planet from ...

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Protect your planet from alien attacks by controlling an orbital platform in this space arcade game. And if you get bored - ... Protect your planet from alien attacks by controlling an orbital platform in this space arcade game. And if you get bored - ... More than 5 types of weapons to improve the platform with different actions and power to protect the planet more effectively.. ... More than 10 types of bonuses (from additional health to the planet to the simultaneous explosion of all aliens on the location ...

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Mercury is the closest planet to the Sun in Earths solar system, but has no moons and no substantial atmosphere. Mercury is ... As the planet nearest the sun, the surface of Mercury can reach a scorching 840 degrees F (450 degrees C). However, since this ... Mercury is the closest planet to the Sun in Earths solar system, but has no moons and no substantial atmosphere. Mercury is ... Mercury is the smallest planet - it is only slightly larger than Earths moon. Since it has no significant atmosphere to stop ...

https://www.space.com/63-inside-planet-mercury-infographic.html

LOST PLANET returns with the long-awaited sequel to the 2 million-plus selling action shooter! LOST PLANET 2s all-new co-op ... Prepare for life on the planet E.D.N. III with the first Premium Theme for LOST PLANET 2. This theme features the Akrid, the ... Prepare for life on the planet E.D.N. III with the second Premium Theme for LOST PLANET 2. This theme features the powerful ... LOST PLANET 2 returns to the troubled world of E.D.N. III, with a globe-trotting story of a planet torn apart by the battle for ...

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The Planets, by Argentinian-born writer Sergio Chejfec, is a go-with-the-flow novel that blends the characters walking the ... The Planets, by Argentinian-born writer Sergio Chejfec, is a go-with-the-flow novel that blends the characters walking the ... They resume their wanderings, like M and the narrator, who "move through the city like planets, following our individual ...

https://www.newpages.com/blog/books/book-reviews/the-planets/

"It is necessary to create awareness among employees how it is impacting the business as well as the planet they live in to save ... It is necessary to create awareness among employees,/b> how it is impacting the business as well as the planet they live in to ... Weve set Scope 1, 2 and 3 carbon-reduction goals aligned with what science tells us is necessary to keep our planet from ... Protect Our Planet. Accelerating our transition to a low-carbon future. powered by renewables. ...

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... they are trying to discover patterns and features that indicate what types of planets are likely to form around ... As astronomers continue to find more and more planets around stars beyond our own Sun, ... They found that stars with Earth-sized rocky planets are overall chemically similar to those with Neptune-sized planets, and to ... some of which host planets and some of which have no known planets. The green dashed lines show these values for our Sun. For a ...

https://www.spacedaily.com/reports/What_kinds_of_stars_form_rocky_planets_999.html

The planet is named GJ 367 b, and it orbits its star in just eight hours. (sciencedaily.com)
The wobble is caused by the gravitational tug of the planet as it orbits the star. (amnh.org)
This hypothetical Neptune-sized planet orbits our Sun in a highly elongated orbit far beyond Pluto. (nasa.gov)
The mathematical prediction of a planet could explain the unique orbits of some smaller objects in the Kuiper Belt, a distant region of icy debris that extends far beyond the orbit of Neptune. (nasa.gov)
Astronomers studying the Kuiper Belt have noticed some of the dwarf planets and other small, icy objects tend to follow orbits that cluster together. (nasa.gov)
By analyzing these orbits, the Caltech team predicted the possibility that a large, previously undiscovered planet may be hiding far beyond Pluto. (nasa.gov)
They estimate the gravity of this potential planet might explain the unusual orbits of those Kuiper objects. (nasa.gov)
Since the only known planet with life, the Earth, orbits the Sun, planetary systems around stars of similar size are obvious targets for astronomers trying to locate extraterrestrial life. (eurekalert.org)
Without a star to circle, these planets would move through the galaxy as our sun and other stars do, in stable orbits around the galaxy's center. (universetoday.com)
Maybe if there is significant mass loss from the star before it explodes the planet could migrate out to bigger and bigger orbits and eventually detach altogether. (universetoday.com)
Though we say that a planet orbits a star, in reality a planet and a star are orbiting each other in a gravitational tug-of-war - the star's mass is just so much bigger that it barely moves. (cosmosmagazine.com)
This study shows us that planets in multi-systems tend to be small and their orbits are flat and circular, much like the inner parts of our own solar system," says Jason Rowe a co-leader of the research at the SETI Institute. (nasa.gov)
In addition, adaptive-optics assisted slit or integral-field spectroscopy can be used to resolve hot, young planets in wide orbits, providing inputs to planet formation models. (lu.se)

Feb. 10, 2022 Astronomers have found evidence of another planet orbiting Proxima Centauri, the closest star to our Solar System. (sciencedaily.com)
Nov. 29, 2023 Astronomers have found a key new system of six transiting planets orbiting a bright star in a harmonic rhythm. (sciencedaily.com)
Astronomers think there may be more free-range planets in our galaxy than stars, but finding them isn't easy since they don't regularly block starlight like orbiting planets. (engadget.com)
This overwhelming brightness renders nearby extrasolar planets invisible to astronomers. (amnh.org)
Astronomers may have found the first binary planets ever observed beyond our solar system. (space.com)
Astronomers are now searching for the predicted planet. (nasa.gov)
In January 2015, Caltech astronomers Konstantin Batygin and Mike Brown announced new research that provides evidence of a giant planet tracing an unusual, elongated orbit in the outer solar system. (nasa.gov)
Astronomers haven't detected any clear-cut cases of captured planets yet. (astronomy.com)
A team of scientists and engineers led by Princeton researchers recently reported the successful operation of a new instrument for the Subaru Telescope in Hawaii that will allow astronomers to make direct observations of planets orbiting nearby stars. (princeton.edu)
It allows astronomers to isolate light reflecting from planets larger than Jupiter and then analyze the light to determine details about the planets' size, age and atmospheric constituents. (princeton.edu)
A team of Brazilian and American astronomers used the Canada-France-Hawaii Telescope (CFHT) observations of the system 16 Cygni to discover evidence of how giant planets like Jupiter form. (astronomy.com)
For the first time, astronomers have detected evidence of this rocky core, the first step in the formation of a giant planet like Jupiter. (astronomy.com)
By decomposing the light from the two stars into their basic components and looking at the difference between the two stars, the astronomers were able to detect signatures left from the planet formation process on 16 Cygni B. (astronomy.com)
Years ago, before the launch of NASA's Kepler spacecraft, astronomers were thrilled when they discovered a single planet. (nasa.gov)

With the rapid advances in our discovery of exoplanets, it is important that we understand planet formation if we are to make sense of the wide variety of planets being detected. (edu.au)
CHARIS, an acronym for the Coronagraphic High Angular Resolution Imaging Spectrograph, is part of a major effort in astronomy to find and analyze planets orbiting distant stars, known as exoplanets. (princeton.edu)
In reality, a class of exoplanets is called "hot Jupiters," large gas giant planets that circle extremely close to their stars, and seem to orbit around their stars in the opposite direction of their parent star's spin. (space.com)
Turns out, finding exoplanets is pretty hard - not only are other star systems trillions of kilometres away, but planets are comparatively small and dim so can be drowned out by their star's light. (cosmosmagazine.com)
At Lund Observatory we study planets orbiting distant star - exoplanets. (lu.se)

Mar. 31, 2022 An international team of scientists has proved that Mercury, our solar system's smallest planet, has geomagnetic storms similar to those on Earth. (sciencedaily.com)
Oct. 21, 2022 An Earth-like planet orbiting an M dwarf -- the most common type of star in the universe -- appears to have no atmosphere at all. (sciencedaily.com)
World Health Day 2022 - Our planet, our heal. (bvsalud.org)

Astrophysicists are discovering new extrasolar planets-those outside our Solar System-almost daily. (amnh.org)
The techniques employed by these instruments may one day help answer one of astronomy's reigning mysteries: do any extrasolar planets host life? (amnh.org)
The feature essays share how these two remarkable technologies are making progress in their goals to seek and understand extrasolar planets. (amnh.org)
Why shouldn't similar extrasolar planets exist around other stars, perhaps in vast numbers? (amnh.org)
For centuries, scientists have pondered the possible existence of extrasolar planets, but only in recent years have such planets actually been discovered. (amnh.org)
As of February 2007 more than 212 extrasolar planets have been discovered. (amnh.org)
The job of finding and imaging extrasolar planets is extraordinarily difficult. (amnh.org)
One technique scientists use to detect extrasolar planets is to look for a slight wobble in the motion of the host stars. (amnh.org)
It has added several more extrasolar planets to the roster since 2005. (amnh.org)
Finding extrasolar planets with Spitzer is still hardly as simple as taking a snapshot. (amnh.org)

The "Star Wars" universe presents visions of many dazzling alien worlds, but they pale in comparison to the wonders of the universe.Take a tour of some real-life alien planets, moons and asteroids that could serve as actual locales for the destinations in the "Star Wars" universe, from Luke Skywalker's home planet of Tatooine to a real-life "Death Star. (space.com)
Understanding this process is the only means we have of determining the bulk elemental compositions of extra-Solar asteroids and planets. (lu.se)

The amount of deflection and brightening caused by such planets is small (hence 'micro-gravitational'), but Kepler can spot it. (engadget.com)
That satellite, launching in the 2020s, will also use micro-gravitational lensing to spot planets, but on a much larger scale. (engadget.com)
That would mean that any planets that had broken away from their host stars in gravitational tussles with neighbours could be habitable, even though they were floating through cold space. (newscientist.com)
Gravitational interactions within a planetary system can throw a planet into a wide, tilted orbit that mimics the signature of a captured world. (astronomy.com)
On the other hand, it is likely that some planets are ejected from their early, turbulent solar systems, due to close gravitational encounters with other planets or stars. (universetoday.com)
Due to gravitational effects in the solar system, such as the tug of other planets, Mercury's oval-shaped path around the sun slowly turns, or precesses. (newscientist.com)

So, the twins could be a pair of planets dancing around a central point of mass (in which case they would be the history-making exoplanet binary), but they could also be a pair of brown dwarfs, or a brown dwarf hosting a massive gas giant planet. (space.com)
The dwarf planet Pluto and its largest moon Charon orbit a point of mass outside the boundaries of each, making Pluto-Charon a binary system. (space.com)
Pluto is a dwarf planet and the largest of the Kuiper Belt objects (KBOs) - a collection of ice-rock bodies found outside Neptune's orbit. (planetary.org)
The dwarf planet Eris , named for the Greek goddess of strife, could also bring down the most popular explanations for dark matter and dark energy . (newscientist.com)

Happy New Year from Noisy Planet! (nih.gov)
Text beside the notebook reads: Happy New Year from Noisy Planet! (nih.gov)
Lunch and Learn Parenting Seminar: It's a Noisy Planet. (nih.gov)
The Noisy Planet campaign is designed to increase awareness among parents of children ages 8 to 12 years (tweens) about the causes and prevention of NIHL. (nih.gov)
The evaluation report includes key recommendations that led to the development of the Noisy Planet public education campaign. (nih.gov)
Download or order free Noisy Planet publications! (nih.gov)
Findings from a 2012 Noisy Planet campaign evaluation related to Noisy Planet audience reach, use of resources, and campaign objectives. (nih.gov)
It's a Noisy Planet. (nih.gov)
and the Noisy Planet logo are registered trademarks of the U.S. Department of Health and Human Services. (nih.gov)

Planet Nomads is a singleplayer sci-fi sandbox game of survival on alien planets through block-style building. (steampowered.com)

For example, the Sun wobbles at about 12 meters (40 feet) per second in response to the gravity of Jupiter, the most massive planet in our Solar System. (amnh.org)
Jupiter, our largest planet, teaches us how planetary systems evolve. (planetary.org)
The best evidence to date in support of planetary capture comes from the European Southern Observatory, which announced in 2006 the discovery of two planets (weighing 14 and 7 times Jupiter) orbiting each other without a star. (astronomy.com)
Artist's concept of a free-floating Jupiter-like planet. (universetoday.com)
Previous observations spotted a handful of free-floating, planet-like objects within star-forming clusters, with masses three times that of Jupiter. (universetoday.com)
The study wasn't able to resolve planets smaller than Saturn but it's believed there are likely many more smaller, Earth-sized worlds than large Jupiter-sized ones. (universetoday.com)
Astronomy.com A team of scientists used observations of the system 16 Cygni to discover evidence of how giant planets like Jupiter form. (astronomy.com)

It suggests that in areas rich in dark matter, particles of the stuff could collect inside free-floating planets that have no star to warm them, heating them enough to maintain liquid water on their surfaces. (newscientist.com)
To reach their conclusion, Perets and Thijs Kouwenhoven from Peking University in China simulated young star clusters containing free-floating planets. (astronomy.com)
They studied young star clusters because capture is more likely when stars and free-floating planets are crowded together in a small space. (astronomy.com)
Although free-floating planets have been predicted, they finally have been detected, holding major implications for planetary formation and evolution models. (universetoday.com)
If free-floating planets formed like stars, then we would have expected to see only one or two of them in our survey instead of 10. (universetoday.com)

Its four planet-like moons make it a planetary system of its own. (planetary.org)

Still, scientists have yet to see an extrasolar planet directly or even take a picture of one. (amnh.org)
The Caltech scientists believe Planet X may have has a mass about 10 times that of Earth and be similar in size to Uranus or Neptune. (nasa.gov)
Scientists found that if the number of rogue planets equals the number of stars in a young cluster, then 3 to 6 percent of the stars will grab a planet over time. (astronomy.com)
Researchers led by Princeton scientists successfully operated a new instrument, the CHARIS spectrograph, which allows them to make detailed observations of planets orbiting distant stars. (princeton.edu)
as a result, those observations cannot tell scientists much about the planets themselves. (princeton.edu)
But scientists suspect the gaseous bodies form more like stars than planets. (universetoday.com)

The goal of this challenging space adventure is to conquer a galaxy of planets, while undertaking a multitude of special challenges. (steampowered.com)
New research shows that one in 20 stars within our galaxy might have captured a free-floating planet. (astronomy.com)
New research suggests that billions of stars in our galaxy have captured rogue planets that once roamed interstellar space. (astronomy.com)
Based on the number of planets identified and the area studied they estimate that there could literally be hundreds of billions of these lone planets roaming our galaxy….literally twice as many planets as there are stars. (universetoday.com)
But this is the only real way we have of finding rogue planets - lonely worlds free-floating through the galaxy, without a star to call home. (cosmosmagazine.com)

Each movement of the suite is named after a planet of the Solar System and its supposed astrological character. (wikipedia.org)
Mercury is the innermost and smallest planet in the solar system, orbiting the Sun once every 88 days. (sciencedaily.com)
What if the Universe contains other planets like Earth outside the Solar System? (amnh.org)
When Spitzer observes a solar system, the star still outshines the planet, but much less than it would in visible light. (amnh.org)
Our solar system is considered by some to host one pair of planets. (space.com)
Caltech researchers have found mathematical evidence suggesting there may be a "Planet X" deep in the solar system. (nasa.gov)
The announcement does not mean there is a new planet in our solar system. (nasa.gov)
We can only answer these questions by exploring the planets and other worlds of our Solar System and beyond. (planetary.org)
Mercury can teach us how planets form and what the early solar system was like when life arose on Earth. (planetary.org)
When you become a member, you join our mission to increase discoveries in our solar system and beyond, elevate the search for life outside our planet, and decrease the risk of Earth being hit by an asteroid. (planetary.org)
sometimes planets can get kicked out of their solar systems entirely, banished to roam interstellar space without a sun of their own. (universetoday.com)
This handcrafted collection reflects how the Solar System's eight planets and sun rule your astrological signs. (davidyurman.com)
Are planets common in the cosmos or is our solar system unique? (cosmosmagazine.com)
Today, modern astronomy has the capacity to gaze outside our own solar system and spot planets whizzing around other stars. (cosmosmagazine.com)
The symposium is motivated by the quickly expanding research on extra-solar planets and the growth of interest in this topic among the astronomy community. (esa.int)
At present, however, there is only one logistically and economically viable means of engineering a cooler planet: injecting sunlight-reflecting aerosols into the stratosphere, also known as solar-radiation management. (nymag.com)
What are extra-Solar planets made of? (lu.se)

Above, a plot of data from CHARIS shows planets located around a star in the planetary system HR8799. (princeton.edu)

The existence of this distant world is only theoretical at this point and no direct observation of the object nicknamed "Planet 9" have been made. (nasa.gov)
Finding a planet in a distant orbit around a low-mass star would be a good sign of capture because the star's disk wouldn't have had enough material to form the planet so far out. (astronomy.com)
It's not looking for a planet around that star - it's actually looking for a cosmic coincidence, when a planet closer to Earth (orbiting around a different star) just happens to pass in front of a more distant one. (cosmosmagazine.com)
Kepler works by looking for the slight dimming of starlight caused when a distant planet transits its parent star. (nasa.gov)

The Planets, Op. 32, is a seven-movement orchestral suite by the English composer Gustav Holst, written between 1914 and 1917. (wikipedia.org)
In an early sketch for the suite Holst listed Mercury as "no. 1", which Greene suggests raises the possibility that the composer's first idea was simply to depict the planets in the obvious order, from nearest the sun to the farthest. (wikipedia.org)

The object, which the researchers have nicknamed "Planet Nine," could have a mass about 10 times that of Earth and orbit about 20 times farther from the Sun on average than Neptune. (nasa.gov)
It would take this new planet between 10,000 and 20,000 years to make just one full orbit around the Sun (where Neptune completes an orbit roughly every 165 years). (nasa.gov)
The name used during previous hunts for the long suspected giant, undiscovered object beyond Neptune is "Planet X. (nasa.gov)
Neptune, our outermost planet, is a windy blue world with exotic ice, raging storms, rings, and a moon that could have a subsurface ocean. (planetary.org)
Researchers used the CHARIS spectrograph to take images of celestial objects during a recent successful field test, including vapor clouds moving across a section of the planet Neptune captured in the instrument's view. (princeton.edu)
Nearly 95 percent of the planets are smaller than Neptune-that is, less than four times the size of Earth. (nasa.gov)

There's a whole planet of diverse biomes waiting for you to explore. (steampowered.com)
We explore bold new ideas and technological options for improving health security for the United States - and the rest of the planet. (csis.org)

That's because these dark-matter-rich areas are so far away - 26,000 light years - that even if the presence of planets could be detected, current and planned telescopes would not be able to image them, looking for signs of water. (newscientist.com)

For decades, theorists have calculated that dark matter could be gravitationally captured by planets and stars . (newscientist.com)
We're most interested in stars within about [65 or 100 light years] of the Earth because we think we can build a big telescope sometime within the next 20 years to try to image planets around them," Kasting told New Scientist . (newscientist.com)
Fragmenting planets sweeping extremely close to their stars might be the cause of mysterious cosmic blasts of radio waves. (sciencenews.org)
Planets or failed stars? (space.com)
Such objects can be classified either as planets or as failed stars, given a blurry dividing line between the two. (space.com)
We're using advanced supercomputing and the world's best telescopes to study the properties of stars and planets. (edu.au)
Stars are one of the basic building blocks of galaxies, while planets - including our own Earth - form naturally around stars. (edu.au)
A key area of research focus is star and planet formation, including the formation of molecular clouds, the dynamics and evolution of disks around young single and binary stars, the early stages of planet growth from microns to metres, and the effects of planets on the evolution of protostellar disks. (edu.au)
We know of more than 5,000 planets orbiting other stars. (planetary.org)
This enhances the significance of understanding how planets are formed around different types of stars. (eurekalert.org)
This finding could explain the existence of some planets that orbit surprisingly far from their stars, and even the existence of a double-planet system. (astronomy.com)
Stars trade planets just like baseball teams trade players," said Hagai Perets from the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts. (astronomy.com)
Over time, the clusters disperse due to close interactions between their stars, so any planet-star encounters have to happen early in the cluster's history. (astronomy.com)
However, planets and stars form at about the same time, hence the metals that are missing in 16 Cygni B (relative to 16 Cygni A) were probably removed from its protoplanetary disk to form its giant planet, so that the remaining material that was falling into 16 Cygni B in the final phases of its formation was deficient in those metals. (astronomy.com)
This could help us find planet-host stars in binaries in a much more straightforward manner compared to all other planet-finding techniques we have available today. (astronomy.com)
Since a planet's transit will always last the same length of time and will always cause the same change in brightness, watching the brightness of stars over time is a reliable method for confirming the existence of planets. (cosmosmagazine.com)
Out of the 160,000 stars Kepler has observed, a few thousand have planet candidates. (nasa.gov)
By concentrating on those busy systems, the team found 715 planets orbiting 305 stars. (nasa.gov)
Suppose that Kepler's stars are like lions, and the planets are lionesses. (nasa.gov)
Planets form in protoplanetary discs around young stars as dust grains collide and stick together to form larger and larger bodies. (lu.se)

It can well be imagined that the organic molecules are preserved in comets during epochs where a planet is barren, and that later comet impacts will introduce the molecules to the planet's surface," says Jes Kristian Jørgensen. (eurekalert.org)

Uranus may be the butt of all planet jokes, but there's much more to this world than potty humor. (planetary.org)

We can rule out large planets. (astronomy.com)
It is thought the smallest brown dwarfs are approximately the size of large planets. (universetoday.com)

And massive young planets produce heat from within, slowly cooling over their lifetimes. (space.com)

Partnering with the e-retailer to launch the second-annual "Green Planet-Sustainable Week" event are World Wide Fund for Nature (WWF) and The China Children and Teenagers' Fund (CCTF). (prnewswire.com)
If we want a healthy planet for future generations, we must make it sustainable and livable. (who.int)

Rogue planets are a natural consequence of star formation. (astronomy.com)

This method works exactly as the name implies - while other methods can only infer the existence of an exoplanet, direct imaging takes snapshots of the planets themselves. (cosmosmagazine.com)

We've developed a procedure to verify multiple planet candidates in bulk to deliver planets wholesale, and have used it to unveil a veritable bonanza of new worlds," says Lissauer. (nasa.gov)
All of the newly-discovered worlds are located in multi-planet systems. (nasa.gov)

With new, powerful spectroscopic facilities on the horizon (JWST, ELT, Ariel, etc.), these insights will help us to study cooler, smaller planets and search their spectra for signatures of habitability and life. (lu.se)

The possibility of a new planet is certainly an exciting one for me as a planetary scientist and for all of us," said Jim Green, director of NASA's Planetary Science Division. (nasa.gov)
Since the first discovery of an exoplanet in 1995, researchers have discovered over 1,000 such planets, a large majority coming from NASA's Kepler space observatory. (princeton.edu)
This technique was used by NASA's Kepler's Mission , the planet-hunting powerhouse that was retired in 2018. (cosmosmagazine.com)

The researchers found that a planet weighing a few times the mass of the Earth, lying within about 30 light years from the galactic centre, could be heated enough by dark matter alone to maintain liquid water on its surface. (newscientist.com)
A new computer calculation suggests the repetitive kind could be due to a planet interacting with its magnetic host star , researchers report in the March 20 Astrophysical Journal . (sciencenews.org)

The planet felt strangely Earth-like at first, with atmosphere composition close enough to ours so that the suit filters have no problem processing it for me to breath. (steampowered.com)
Earth, the only planet known to support life, offers liquid water, an oxygen-rich atmosphere, and protection from the Sun's harmful radiation. (planetary.org)
A captured planet tends to end up hundreds or thousands of times farther from its star than Earth is from the Sun. It's also likely to have an orbit that's tilted relative to any native planets, and may even revolve around its star backward. (astronomy.com)
Our results show that the formation of giant planets, as well as terrestrial planets like our own Earth, leaves subtle signatures in stellar atmospheres," said Marcelo Tucci Maia from the University of São Paulo. (astronomy.com)
As the climate crisis worsens, Channel 4 News charts the devastating impact it is having on Planet Earth. (channel4.com)
Earth, our home planet, has many megalopolises but is not yet covered by one all-consuming city. (space.com)
Four of the new planets are less than two-and-a-half times the size of Earth. (nasa.gov)
For our Earth Day special issue, we're featuring three new books about our planet-and the plants and animals that live here. (timeforkids.com)
Mission to planet Earth. (nih.gov)
Now is a good time to check out progress of the planet Mars as it continues toward a historically close approach to the Earth later this summer. (marsnews.com)

Dec. 2, 2021 The TESS mission has discovered an ultra-short-period planet (USP) that is also super light. (sciencedaily.com)
His next book, How to Save Our Planet: The Facts , will be published in May 2021. (penguin.co.uk)

In 1995, University of Geneva astronomer Michel Mayor and his graduate student Didier Queloz detected the first planet orbiting a star other than the Sun. Since then, this exciting new field of astronomy has exploded. (amnh.org)

One of the main models to form giant planets is called "core accretion. (astronomy.com)
They play two important roles: they are birth sites of planets and they feed gas to the star via accretion. (lu.se)

And the heating would continue for trillions of years, since dark matter would continually be captured by the planets' gravity. (newscientist.com)
The gravity of the planet in the foreground bends the light from the star, acting as a lens, and focuses the light too so that background star gets a little bit brighter," Horner explains. (cosmosmagazine.com)

The observed stellar system is still too young for planets to have formed. (eurekalert.org)
Any dip in stellar brightness attracts the attention of the Kepler team, and can prompt them to declare a planet candidate. (nasa.gov)

This is not, however, the detection or discovery of a new planet. (nasa.gov)
Among the many discoveries related to this young field, the detection and study of transiting planets has now emerged as an extremely fruitful research area. (esa.int)

The above text is excerpted from the Wikipedia article " Mercury (planet) ", which has been released under the GNU Free Documentation License . (sciencedaily.com)
Einstein was lucky that there is a planet so close to the sun as Mercury," he says. (newscientist.com)

This makes it easier to detect the planet itself. (amnh.org)
With CHARIS spectra we can now do a lot more than simply detect planets: we can measure their temperatures and atmosphere compositions. (princeton.edu)

Silhouette of a gas giant planet. (openclipart.org)
The star 16 Cyg A is richer in all elements relative to star 16 Cyg B. In other words, star 16 Cyg B, the host star of a giant planet, is deficient in all chemical elements, especially in the refractory elements (those with high condensation temperatures and that form dust grains more easily), suggesting evidence of a rocky core in the giant planet 16 Cyg Bb. (astronomy.com)
First, they found that the star 16 Cygni A is enhanced in all chemical elements relative to 16 Cygni B. This means that 16 Cygni B, the star that hosts a giant planet, is metal deficient. (astronomy.com)
This is a remarkable discovery because the rocky core of a giant planet is expected to be rich in refractory elements. (astronomy.com)
The gas giant planet Bespin appears in "Star Wars Episode V: The Empire Strikes Back," where it possesses a floating cloud city administered by Lando Calrissian. (space.com)

Planet VPN allows me to bypass geo-restrictions, access restricted content, change my IP address while surfing the web, and use public Wi-Fi without any potential threat to my device. (macupdate.com)
Find all types of premium content on Producer Planet. (magix.com)

They might choose to migrate to dark-matter-heated planets. (newscientist.com)

ignoring some important astrological factors such as the influence of the sun and the moon, and attributing certain non-astrological qualities to each planet. (wikipedia.org)

This may alter the chemical composition of the material from which planets are formed. (eurekalert.org)

In their own assessment, the Protected Planet Report found that only about 20 percent of protected regions had evaluated for effective management. (nationalgeographic.com)
One of our core values here at Stonyfield is to leave this planet better than we found it. (stonyfield.com)
At Stonyfield, we're committed to improving how we work so we can leave the planet better than we found it. (stonyfield.com)
This is a technique that once upon a time was expected to find gazillions of planets, and it's found a handful . (cosmosmagazine.com)

Travel into the far reaches of space, through cleverly designed star constellations and variable game modes, conquering enemy planets using 15 combinable technologies. (steampowered.com)
A star, fueled by nuclear reactions, is typically a billion times brighter than any orbiting planet, whose light is primarily reflected from the host star. (amnh.org)
The shift in wavelength when a star wobbles is very tiny, so this technique has thus far detected only very massive planets. (amnh.org)
That's because the more massive the planet, and the closer it is to the host star, the larger and quicker the wobble. (amnh.org)
Interactions between a planet and a magnetic neutron star (illustrated) might be the source of repeating, millisecond-long bursts of cosmic radio waves. (sciencenews.org)
The more massive a star, the more likely it is to snag a planet drifting by. (astronomy.com)
Newborn star systems often contain multiple planets. (astronomy.com)
More recent projects have demonstrated the ability to capture light reflected from a planet and separate it from the light shining directly from its parent star. (princeton.edu)
The spectrograph sits behind a device called a coronagraph, which channels light from the telescope and uses interference patterns to divide the light coming directly from a star from the light reflecting off orbiting planets. (princeton.edu)
what about planets surrounding a star that goes supernova? (universetoday.com)
Supernovae are often asymmetric and the exploding star may be ejected out of the system leaving the planets behind to wander off on their own. (universetoday.com)
Although no one in real life (to our knowledge) has constructed a spherical space station capable of destroying a planet, Saturn's moon Mimas fits the bill as a real-life Death Star. (space.com)
The planet where Obi-Wan and Anakin Skywalker fought their lightsaber duel over a river of lava (somewhat straining the limits of believability) resembles planet CoRoT-7b, orbiting a star some 480 light-years away. (space.com)
Hoth, the snow-covered planet featured during the AT-AT battle at the beginning of "Star Wars Episode V: The Empire Strikes Back," bears a resemblance to planet OGLE-2006-BLG-390. (space.com)
Coruscant, capital of the Empire, first figures prominently in "Star Wars Episode I: The Phantom Menace," where it is depicted as a planet entirely covered by a city. (space.com)
In "Star Wars Episode II: Attack of the Clones," Obi-Wan travels to the ocean planet Kamino where he discovers a clone army being constructed, then fights bounty hunter Jango Fett in pouring rain. (space.com)
In 2257, the United Planets Cruiser C-57D is sent to the planet Altair IV in the Alpha Aquilae star system, to find out what happened to the Bellerophon Expedition, sent out some twenty years earlier. (daviddarling.info)
When a planet crosses in front of its star during its orbit, it causes the star's brightness to dim by a tiny but measurable amount. (cosmosmagazine.com)
The poster child for this is the star HR 8799, which has four planets going around it which have all been seen directly," Horner says. (cosmosmagazine.com)

Artist's concept of a hypothetical planet orbiting far from the Sun. (nasa.gov)

We are seizing the opportunity to use Kepler's uniquely sensitive camera to sniff for planets in a different way,' said NASA researcher Geert Barentsen. (engadget.com)

The Spitzer Space telescope has pioneered a newer planet-finding technique called the 'secondary eclipse method. (amnh.org)

Moreover, they orbit in their sun's habitable zone, where the surface temperature of the planets may be suitable for liquid water, a key ingredient for life as we know it. (nasa.gov)

To celebrate Lost Planet and Dead Rising reaching a million, Capcom has released the Main Character theme for download! (xbox.com)

The planet, called Kepler-16b, is not thought to be habitable. (space.com)
Kepler has always been good at finding planets. (nasa.gov)

That may be so, but Dave Stevenson of Caltech in Pasadena, California, points out that planets where dark matter would provide significant heating are extremely rare. (newscientist.com)

He also offers strategies people can use to promote healthy buildings, healthy lives, and a healthy planet. (nih.gov)

Verification of candidates can be a laborious process, proceeding slowly, planet-by-planet. (nasa.gov)

Defend a planet until reinforcements arrive, fly into uncharted space, conquer planets and set up defenses before rivals attack - the list goes on and on, as there is no shortage of objectives in your struggle for interstellar dominance. (steampowered.com)
Released in 1956, Forbidden Planet was one of the most sophisticated of the pre-Space Age SF films. (daviddarling.info)
A researcher at Purdue University, Ruan has spent years trying to develop a maximally reflective type of white paint, one that could bounce upwards of 95 percent of the sun's rays off of any given surface and then back out into deep space, cooling the planet in the process. (nymag.com)
The substance redirects so much light and heat back into space that, according to one calculation, it could offset the impact of ongoing carbon emissions if we could somehow pour it over 1 to 2 percent of the entire planet. (nymag.com)

This is a marked increase in the known number of relatively small planets. (nasa.gov)

Chemicals and Drugs1

Analytical, Diagnostic and Therapeutic Techniques and Equipment1

Phenomena and Processes23

Disciplines and Occupations3

Technology, Industry, Agriculture1

Humanities1

Health Care5

In search of planets and life around other stars. (1/47)

Nebular and auroral emission lines of [Cl III] in the optical spectra of planetary nebulae. (2/47)

The occurrence of Jovian planets and the habitability of planetary systems. (3/47)

Planetary exploration in the time of astrobiology: protecting against biological contamination. (4/47)

Mass spectrometry in the U.S. space program: past, present, and future. (5/47)

Gas chromatographic separation of nitrogen, oxygen, argon, and carbon monoxide using custom-made porous polymers from high purity divinylbenzene. (6/47)

Formation of giant planets by fragmentation of protoplanetary disks. (7/47)

The onset of planet formation in brown dwarf disks. (8/47)

Planets

Earth (Planet)

Evolution, Planetary

Astronomy

Stars, Celestial

Exobiology

Extraterrestrial Environment

Astronomical Phenomena

Minor Planets

Mercury (Planet)

Solar System

Neptune

Life

Uranus

Meteoroids

Moon

Atmosphere

Mars

Tidal Waves

Pluto

Jupiter

Ice

Space Simulation

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Cosmic Radiation

Spacecraft

Countercurrent Distribution

Geology

Evolution, Chemical

In search of planets and life around other stars. (1/47)

Nebular and auroral emission lines of [Cl III] in the optical spectra of planetary nebulae. (2/47)

The occurrence of Jovian planets and the habitability of planetary systems. (3/47)

Planetary exploration in the time of astrobiology: protecting against biological contamination. (4/47)

Mass spectrometry in the U.S. space program: past, present, and future. (5/47)

Gas chromatographic separation of nitrogen, oxygen, argon, and carbon monoxide using custom-made porous polymers from high purity divinylbenzene. (6/47)

Formation of giant planets by fragmentation of protoplanetary disks. (7/47)

The onset of planet formation in brown dwarf disks. (8/47)

Mars Rover Discovers Faint Signals of Water on The Red Planet : ScienceAlert

Stories - Lonely Planet

The Planets - Wikipedia

Naming New Extrasolar Planets | Space

Kepler Planets Gallery

planets (kottke.org)

Extrasolar Planets and Atmospheres

Planets - Page 4 | Extremetech

Crescent Planet - NASA

About - Lonely Planet

planets 2016 Archives - Universe Today

Science: Planets are common around solitary pulsars | New Scientist

Get Fishing Planet | Xbox

Pawn Planet on Steam

A Dweller on Two Planets: Amanuensis' Preface

Outer Planets Assessment Group (OPAG)

Trade

Kindergarten Planets Worksheets

What is between inner and outer planets? - Answers

How Planets Produce Magnetic Fields - WorldAtlas

Libre Planet Archives - Creative Commons

Planet of the Apes (TV series) - Wikipedia

rogue planets Archives | PlanetSave

Planet

Save the Planet on Steam

Inside Planet Mercury (Infographic) | Space

LOST PLANET 2

The Planets - NewPages.com

Planet

What kinds of stars form rocky planets

Orbits13

Astronomers14

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20223

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Free-floatin5