Cloud large dust. Medical search. Frequent questions

The sunsets are because the tiny dust particles tens of thousands of feet in the air filter the sun's rays at the beginning and end of the day. (peoplesworld.org)
The material in the cloud cools into dust-like particles and drops back to the earth as fallout . (cdc.gov)
[1] [2] Most cosmic dust particles measure between a few molecules and 0.1 mm (100 μm ), such as micrometeoroids . (wikipedia.org)
Larger particles are called meteoroids . (wikipedia.org)
When infrared astronomy began, the dust particles were observed to be significant and vital components of astrophysical processes. (wikipedia.org)
Cosmic dust can be detected by remote sensing methods that utilize the radiative properties of cosmic dust particles, c.f. (wikipedia.org)
This was massive,' said Jay Herman, principal investigator for aerosols for NASA's T otal O zone M apping S pectrometer ( TOMS ), a satellite-based instrument commonly used by scientists to track aerosols (tiny airborne particles like dust or smoke). (flutrackers.com)
Cartoon showing the interaction of the solid Moon with the particles, fields and dust that make up the lunar exosphere. (smithsonianmag.com)
Meteoroids hit the lunar surface at about 20 km per second, vaporizing particles on impact and throwing large clouds of lunar dust into space. (smithsonianmag.com)
Lunar dust "clouds" are not suspended, but are in constant ballistic motion, some particles ascending and some descending, depending upon their crater of origin. (smithsonianmag.com)
But collectively, these particles make up a dust exosphere that varies in density and position with time. (smithsonianmag.com)
The nearly straight, blue-white wisps pointing toward the upper right are streams of large dust particles. (nasa.gov)
As the cloud moves toward Merope, its smaller dust particles are slowed down by the star's radiation pressure more than the larger particles are. (nasa.gov)
The large dust particles continue on toward the star while the smaller particles are left behind at the lower left of the picture. (nasa.gov)
iii) Dust migration through Poynting-Robertson (PR) drag: we predict that Mars should have its own resonant ring of particles captured from the zodiacal cloud, and that the capture probability is ≲25 per cent that of the Earth, consistent with published upper limits for its resonant ring. (lu.se)
For larger particles, gravitational settling depletes the convected cloud, so the instrument behaves as a horizontal elutriator. (cdc.gov)
Incomplete combustion of fossil fuels and biomass burning emit large amounts of soot particles into the troposphere. (bvsalud.org)

Dust extinction measurements provide important constraints on the size ,composition, shape, and abundance of dust grains and an empirical model to account of the effects of extinction on astrophysical objects. (speakerdeck.com)
For decades our understanding of dust grains was strongly biased by measurements in our Galaxy and the ultraviolet (UV). (speakerdeck.com)
Thousands of tons of cosmic dust are estimated to reach Earth's surface every year, [4] with most grains having a mass between 10 −16 kg (0.1 pg) and 10 −4 kg (0.1 g). [4] The density of the dust cloud through which the Earth is traveling is approximately 10 −6 dust grains/m 3 . (wikipedia.org)
physics ( solid-state , electromagnetic theory , surface physics, statistical physics , thermal physics ), fractal mathematics , surface chemistry on dust grains, meteoritics , as well as every branch of astronomy and astrophysics . (wikipedia.org)
Dust temperatures are solved using the DustEM code for amorphous carbons and silicates representative of dust at high Galactic latitude (DHGL), carbon and silicate grains coated with carbon mantles, and mixed aggregates of carbon and silicate. (aanda.org)
It is thus crucial to characterize the properties of the gas and in particular, in the context of the Planck and Herschel missions, of the dust grains that compose Galactic interstellar filaments. (aanda.org)
The dust input from AGB stars is dominated by carbon grains from stars with masses ≲4M ☉ almost during the entire history of the LMC. (u-strasbg.fr)
With models of the lifecycle of stardust grains in the ISM we confirm the strong discrepancy between dust input from stars and the existing interstellar dust mass in the LMC reported previously. (u-strasbg.fr)
We call this material the interstellar medium, and it's made up of gas (mostly hydrogen, but with some helium, oxygen, and other elements mixed in) and dust (complex carbon molecules and tiny grains made of lots of other materials including silicates). (syfy.com)
The blue patch is Rayleigh scattered starlight off of tiny dust grains and molecules (similar to scattering in the Earth's daytime sky reflecting blue light). (clarkvision.com)
Recent theoretical developments in the field of dust processing by SN shocks highlight the potential survival of dust grains from the pre-existing circumstellar nebula. (harvard.edu)
The spectral measurements also allowed Lisse and his colleagues to estimate the size of the dust and they found that there is an abundance of micrometer-sized dust grains. (hawaii.edu)
The intensity of the emissions at particular wavelengths in an infrared spectrum can be used to identify the composition of dust grains and gas. (hawaii.edu)
The black smooth curve labeled "blackbody" is the emission expected from a cold (200 Kelvin ) cloud of dust grains large enough to be optically opaque. (hawaii.edu)

In the Solar System , dust plays a major role in the zodiacal light , Saturn 's B Ring spokes , the outer diffuse planetary rings at Jupiter , Saturn, Uranus and Neptune , and comets . (wikipedia.org)
in the clouds of the diffuse interstellar medium , in molecular clouds , in the circumstellar dust of young stellar objects , and in planetary systems such as the Solar System , where astronomers consider dust as in its most recycled state. (wikipedia.org)
we return the heavy launcher and carrier rockets to the moon while placing that load of dust in a diffuse cloud in a yearlong orbit around the sun. (halfbakery.com)
Thereafter, dust haze appeared uniform and diffuse, and decay appeared to have set in. (wiley.com)
The diffuse radiation is a mixture of starlight scattered by the dust and gas in the area, and atomic and molecular hydrogen line emission. (lu.se)
A large number of small and slightly diffuse sources can be seen as a swarm in the halo of Messier 104. (lu.se)

In the years after the project was completed, many more would die due to their exposure to silica dust while working in the tunnel. (nps.gov)
home dust exposure, and with traumatic exposure, the latter to take into account differences related to possible mental health consequences and associated behavioral problems. (cdc.gov)
33 Occurrences of WTC respiratory disease in rescue workers/volunteers whose first exposure was more than 48 hours post-collapse could be explained either by "high-level" exposures generated by activities that disturbed dust in place, while entering enclosed, poorly ventilated areas, or by the accumulation of repeated "low-level" exposures over time. (cdc.gov)
The differences in ORs between responders and civilians were larger for physical compared to psychosocial exposure types. (cdc.gov)
In addition, their group has found that elevated serum levels of an LDL metabolite after intense World Trade Center dust exposure is a risk factor for future impaired lung function as measured by forced expiratory volume in 1 second (FEV--1). (medscape.com)

I will discuss the results of a dedicated effort to expand our spectroscopic measurements of dust extinction to the far-UV, optical, near-infrared, and mid-infrared wavelength regimes. (speakerdeck.com)

Slightly changing any of these parameters can give significantly different dust dynamical behavior. (wikipedia.org)

The first global spatially resolved reconstruction of the star formation history of the LMC from the Magellanic Clouds Photometric Survey was employed to calculate the stellar populations in the LMC. (u-strasbg.fr)
Previous studies have concluded that low- and intermediate-mass stars cannot account for the interstellar dust yield in the Magellanic Clouds inferred from far-infrared and sub-millimetre observations. (harvard.edu)
To investigate their contribution as dust producers in the Magellanic Clouds, we analyse 31 confirmed and candidate LBVs from a recent census. (harvard.edu)

O8I: Wolf-Rayet system HD 36402 ( = BAT99-38) in the Large Magellanic Cloud shows emission characteristic of heated dust. (illinois.edu)
The dust emission is variable on a time-scale of years, with a period near 4.7 yr, possibly associated with orbital motion of the O8 supergiant and the inner P ≃ 3.03-d WC4+O binary. (illinois.edu)
The phase of maximum dust emission is close to that of the X-ray minimum, consistent with both processes being tied to colliding wind effects in an elliptical binary orbit. (illinois.edu)
It is found, however, that the extended emission high dust temperature is evidence of ongoing star formation throughout virtually the entire W3/W4 molecular cloud. (harvard.edu)
Dust emission is increasingly used as a tracer of the mass in the interstellar medium. (aanda.org)
Our aim is to disentangle the effects of radiative transfer and dust properties on the variations in the dust emission at long wavelengths. (aanda.org)
This enables us to provide observers with tools to analyse the dust emission arising from dense clouds. (aanda.org)
We determine observed colour temperatures, T colour , and emissivity spectral indices, β colour , by fitting the dust emission with modified blackbodies using a standard χ 2 fitting method, in order to compare our models with observational results. (aanda.org)
The blue light is predominantly emitted by very high-energy ("relativistic") electrons that spiral in a large-scale magnetic field (so-called synchrotron emission). (lu.se)

However, as these clouds are optically thick at short wavelengths but optically thin at long wavelengths, it is tricky to conclude anything about dust properties without a proper treatment of the radiative transfer. (aanda.org)
However, reduced streamwise drift velocity allows mixing to disperse the optically detected dust cloud concentration pulse. (cdc.gov)

Even so, you can make out Hellas Basin, the bright, large oval area at the lower right, where many global dust storms originate. (planetary.org)
Huge dust storms like this one are actually mergers of smaller storms and they are rare. (planetary.org)
In fact, these monster storms only appear every three to four Mars years (about six to eight Earth years) on average, luring and challenging today's atmospheric scientists to figure out how and why local dust squalls turn regional and then grow to engulf the planet. (planetary.org)
The Planet-Encircling Dust Events (PEDEs), as Cantor defined these massive storms, churn up dust from the Martian terrain high into the atmosphere, "in excess of 60 kilometers," he said. (planetary.org)
Sand seas cover much of Mauritania and spread into Western Sahara, providing ample material for dust storms. (nasa.gov)
The streets of Baichen in the Jilin Province of northern China appear almost apocalyptic on April 7 during the peak of the violent dust storms that gave birth to the dust cloud. (flutrackers.com)
Like the lines of smoke used in wind tunnel tests to show the path of the air, these springtime dust storms give visible evidence of a 'conveyor belt in the sky' that ferries air from Asia to North America in the spring. (flutrackers.com)
Between late May and early June, several different irregular and spiral-shaped dust storms were seen to be forming at the north polar ice cap on Mars. (dlr.de)
ESA's Mars Express spacecraft has been observing local and regional dust storms forming at the north pole of the Red Planet over the last month, and watching as they disperse towards the equator. (dlr.de)

While the dust haze is still widespread, "Opportunity may be getting some energy from the Sun now," said MER Project Manager John Callas, of JPL. (planetary.org)
The positive Matrix Factorization (PMF) model revealed that the source of BB, characterized by high K fractions, was the largest contributor during smoke haze episodes accounting for 50% (2017) and 79% (2019). (bvsalud.org)

The dry drilling technique that was used released large amounts of silica dust into the air. (nps.gov)
Within months, workers became sick from breathing silica dust. (nps.gov)
The dangerous working conditions and silica dust rendered many of the men unable to work. (nps.gov)

The massive cloud of dust is blanketing the Caribbean as it heads to the U.S. with a size and concentration level that meteorologists say hasn't been seen in roughly half a century. (peoplesworld.org)
A massive cloud of dust from the Sahara Desert is expected to reach the Southeastern U.S. by Wednesday. (peoplesworld.org)
Monster stars are being born in this massive cloud of gas and dust. (stardate.org)
Sometimes a massive cloud will collapse in on itself and pull in more materials, causing the core of the cloud to grow so dense and so hot that it begins the nuclear reaction that births a star. (theverge.com)

In the Solar System , interplanetary dust causes the zodiacal light . (wikipedia.org)
Zodiacal light caused by cosmic dust. (wikipedia.org)

Dark patches are due to absorption of visible light by dense dust clouds. (astronomynow.com)

Cosmic dust was once solely an annoyance to astronomers, as it obscures objects they wished to observe. (wikipedia.org)
The astronomers accumulate observational 'snapshots' of dust at different stages of its life and, over time, form a more complete movie of the Universe's complicated recycling steps. (wikipedia.org)
Now everyone's favourite supernova is at it again, helping astronomers at ESA's Herschel Space Observatory figure out where cosmic dust comes from. (scientificamerican.com)
For decades, astronomers have wondered where all of the dust in the early universe came from. (scientificamerican.com)
Astronomers worked out that the glow coming from the remnant was provided by lots and lots of dust - around 10,000 times more than previous estimates that were made 600 days after the explosion. (scientificamerican.com)
To determine the level of iron, the astronomers observed the stars' spectra in infrared light which, compared with optical light, are parts of the light spectrum that can more easily shine through the densely dust-laden parts of the Milky Way. (lu.se)

Much of today's dust research is focused on North Africa as it is Earth's largest and most persistent source of dust. (eurekalert.org)
How the eclipsed Moon looks depends on how much dust and clouds are present in Earth's atmosphere. (nasa.gov)

and the dust lifting centers seem to be petering out," said Richard Zurek, Chief Scientist of the Mars Program Office at the Jet Propulsion Laboratory (JPL), the birthplace of all NASA's Mars rovers and orbiters. (planetary.org)
As the dust storm reached the western edge of Tharsis, secondary dust lifting centers developed in Daedalia and Solis (southeastern Tharsis). (wiley.com)
As the new star begins to form, the gas cloud becomes super turbulent, creating multiple centers of gravity that can collapse in on each other. (theverge.com)

West of the Canary Islands, the dust forms a larger, more amorphous plume that blends with clouds overhead. (nasa.gov)
Cosmic dust contains some complex organic compounds (amorphous organic solids with a mixed aromatic - aliphatic structure) that could be created naturally, and rapidly, by stars . (wikipedia.org)

The temperature of the dust is about −250ºC, which is 20 times colder than previous estimates and not far above absolute zero. (scientificamerican.com)
Adding realistic noise to the modelled data, we show that it is unlikely to be the only explanation of the β colour − T colour anti-correlation observed in starless clouds, which may instead be explained by intrinsic variations in the grain optical properties with temperature. (aanda.org)
Finally, the column density is underestimated when determined with modified blackbody fitting because of the discrepancy between T colour and the "true" dust temperature in the innermost layers of the clouds. (aanda.org)
It showed that larger radius is more important than higher temperature at the region where the envelope is just bound. (lu.se)

But we know that the gas and dust clouds out in space contain several elements, including carbon, nitrogen and oxygen, which are atoms easily capable of binding to other atoms and thus forming increasingly large molecules. (lu.se)

This is an awesome set of dust particle brushes for Photoshop. (webdesigndev.com)
Our large particle simulation results compare favorably with published experimental results for large, polydisperse calcium carbonate rock dust. (cdc.gov)

Early on, stars like the Sun had not been around for long enough to make the amounts of dust seen. (scientificamerican.com)
The World Trade Center (WTC) disaster released large amounts of various chemical substances into the environment, including perfluoroalkyl substances (PFASs). (cdc.gov)
It's interesting that we saw this done in other models, like mouse models and such, where certain bacteria were viewed as healthy for the system, and if they were able to bring that bacteria out in larger amounts they saw anti-inflammatory effects, so we're hoping to mirror that and also do a mouse model," she said. (medscape.com)

Over time, if it hits a denser, larger cloud, that wave of matter can cause the cloud to collapse, forming stars and planets. (syfy.com)
Over time, the cloud of gas and dust will either collapse to form more stars or it'll be blown away, exposing the stars to view. (stardate.org)
1 , 4 , 5 , 6 , 7 Contaminants such as asbestos, hydrochloric acid, PCBs (Polychlorinated biphenyls), silica and heavy metals were found in the dust and ash resulting from the WTC collapse. (cdc.gov)

To derive characteristic dust parameters, we fitted the photometry resulting from a stacking analysis, which consists of co-adding images of the same wavelength band of several targets to improve the signal-to-noise. (harvard.edu)
There is no direct evidence as yet for the notion that more advanced molecular systems could have been formed in space, with large biomolecules resembling those which are characteristic of life on Earth", says chemist Petter Persson. (lu.se)

2] A Martian global dust storm is one of the most dramatic, dynamical phenomena in the solar system. (wiley.com)

Supernova 1987A occurred on the outskirts of the Tarantula Nebula in the Large Magellanic Cloud, a dwarf galaxy not far from our own Milky Way. (scientificamerican.com)
Star Clouds of the Milky Way Above Balanced Rock, Arches National Park. (clarkvision.com)
The centre of the Milky Way is poorly understood, because it is blocked from view by intervening dust. (astronomynow.com)
This image displays a region in the Milky Way at a distance of about 5,000 light years, where stars which have recently formed in clouds of gas and dust are still heavily obscured. (lu.se)
The image, taken with the European Southern Observatory's Very Large Telescope in Chile, shows a high-resolution view of the innermost parts of the Milky Way. (lu.se)

Applies to galaxies, circumstellar dust, etc. (speakerdeck.com)
http://www.psrd.hawaii.edu/Jan10/circumstellar-dust.html (date accessed). (hawaii.edu)

Solar System dust includes comet dust , planetary dust (like from Mars), [3] asteroidal dust , dust from the Kuiper belt , and interstellar dust passing through the Solar System. (wikipedia.org)
Everything in our solar system started out as cosmic dust. (scientificamerican.com)
However, Galileo Galilei, the Italian scientist best known for discovering the largest moons of Jupiter and championing a heliocentric model of the solar system, was the first to observe the Pleiades through a telescope. (nasa.gov)
It concerns three stars that are difficult to study because they are extremely far away from our solar system, and hidden behind enormous clouds of dust and gas that block out light. (lu.se)

When the Sun grows old enough and stops fusing the hydrogen in its core, it too will throw out dust into the universe, and that dust will go on to form new stars. (scientificamerican.com)
M17 is a huge, glowing cloud of ionized hydrogen peppered with clouds of cosmic dust. (astronomy.com)

Infrared mapping of the W3, W4, and W5 complex of giant H II regions and molecular clouds with approximately 9 degree resolution at 11 and 20 microns is presented. (harvard.edu)
The W5 object shows 11 and 20 micron emissions, and its brighter peaks are directly associated with embedded stars in the molecular clouds encircling the H II region. (harvard.edu)
With the combination of Planck and Herschel observatories, we now have both the spectral coverage and the angular resolution required to observe dense and cold molecular clouds. (aanda.org)

For the first time, theoretically calculated dust production rates of AGB stars are compared with those derived from infrared observations of AGB stars for the entire galaxy. (u-strasbg.fr)
Dust exospheres have been clearly observed and measured around the icy moons of Jupiter and Saturn, but the history of observations of the lunar dust cloud is murkier. (smithsonianmag.com)
In this image, which combines visible and infrared observations, Hubble has captured the eerie, wispy tendrils of an interstellar cloud being destroyed by one of the brightest stars in M45. (nasa.gov)
We also present new Very Large Telescope VISIR observations of three sources in the Large Magellanic Cloud (LMC). (harvard.edu)
Infrared telescopic observations may have observed dust from an impact between protoplanets in the disk surrounding young star HD172555. (hawaii.edu)

That would generate lots of material along with huge clouds of dust that could easily choke off a star's light in rapid and irregular fashion. (universetoday.com)
Like fireworks illuminating dark clouds at night, the star's light is reflecting off the surface of pitch-black clouds of cold gas laced with dust. (nasa.gov)

The word nebula is Latin for cloud, which is obvious enough. (syfy.com)
Nebulae typically require larger apertures and narrowband nebula filters, as well as dark, clear skies. (astronomy.com)
In views of this evocative object in visible light the core of the nebula is completely hidden behind obscuring dust, but in this VISTA view, taken in infrared light, the cluster of very young stars at the object's heart is revealed. (lu.se)

Artist's impression of dust formation around a supernova explosion. (wikipedia.org)
Dr Mikako Matsuura , the lead author of the Science paper that announced that results, and her colleagues found that supernova 1987A ejected dust with a total mass between 0.4 and 0.7 times that of the Sun. (scientificamerican.com)
It wasn't specifically looking for supernova 1987A, but happened upon it during a survey of the Large Magellanic Cloud. (scientificamerican.com)
The role of dust destruction in LBV nebulae by a possible subsequent supernova (SN) blast wave has yet to be determined. (harvard.edu)

What this means is that more dust is falling out of the atmosphere than is being raised into it,"elaborated Zurek, who is also Project Scientist of the Mars Reconnaissance Orbiter (MRO) mission, which has instrument teams researching and documenting various aspects of this storm. (planetary.org)
Every year, mineral-rich dust from North Africa's Sahara Desert is lifted into the atmosphere by winds and carried on a 5,000-mile journey across the North Atlantic to the Americas. (eurekalert.org)
And during New Year's Eve, the earth will enter the dust cloud and a portion of that will enter the atmosphere and burn up as meteors. (halfbakery.com)
Total eclipses tend to be very dark after major volcanic eruptions, which expel large quantities of ash into the atmosphere. (nasa.gov)

Find a region with a large amount of fine dust. (halfbakery.com)
Surveyor found that the Moon's surface is composed of very fine dust, yet is cohesive enough to bear the weight of both a heavily laden astronaut and a loaded Lunar Module. (smithsonianmag.com)
This phenomenon was puzzling, but the Surveyor scientists thought that fine dust was being stirred above the surface by micrometeorite impacts. (smithsonianmag.com)

Clouds of dust began to swirl all around. (dailygazette.com)

At the same time, wispy clouds can be seen along the edge of the ice cap, and also further south (left), around the large volcanoes. (dlr.de)

If the planes of orbits are different (as it will have to be) the relative velocity between earth and that milestone will be too large for us to see it and rejoice in its passage. (halfbakery.com)

We model cylindrical clouds with visual extinctions between 1 and 20 mag, illuminated by the standard interstellar radiation field, and carry out full radiative transfer calculations using a Monte Carlo code. (aanda.org)
Radiative transfer effects can explain neither the low T colour , the increased submillimetre emissivity measured at the centre of dense clouds, nor the observed β colour − T colour anti-correlation for the models considered. (aanda.org)

Parts of the Middle East shrouded in a persistent dust cloud in early September 2015. (eumetsat.int)

It's springtime in southern hemisphere, where a dust storm ballooned into a global event in mid-June blanketing the planet. (planetary.org)
In terms of area covered, this was the largest dust storm we've observed in the Northern Hemisphere (since 1979). (flutrackers.com)
The study, titled "The Discovery of African Dust Transport to the Western Hemisphere and the Saharan Air Layer," was published in Bulletin of the American Meteorological Society . (eurekalert.org)
It is currently spring in the northern hemisphere, and water-ice clouds and small dust-lifting events are frequently observed along the edge of the seasonally retreating ice cap. (dlr.de)

As the veteran Mars Exploration Rover (MER) slept in Endeavour Crater's Perseverance Valley under the thick cloud of dust that has blanketed the Red Planet for the last six weeks, scientists who are studying the monster storm that forced the robot field geologist into its hibernation mode are now reporting the tempest has peaked. (planetary.org)
Mars' stormy weather through 11 June 2018 This series of images, created with imagery processed by the Mars Color Imager (MARCI) crew at Malin Space Science Systems (MSSS), shows simulated views of the path of the ongoing epic dust storm event as it moves across the planet, darkening the Martian sky and blotting out the Sun from Opportunity's view. (planetary.org)
John Barker, an electronics researcher at the University of Glasgow in the UK decided to investigate whether a cloud of similar smart dust "motes" could navigate across the surface of Mars from one point to another, simply by modifying their shape. (newscientist.com)
1] A global dust storm occurred on Mars between June and October 2001. (wiley.com)
In late May 2019, a spiral-shaped dust storm at the north polar ice cap of Mars was observed by several instruments on board Mars Express. (dlr.de)
This image was acquired with the DLR-operated HRSC stereo camera on 22 May 2019 and shows a dust storm on the edge of Mars' north polar ice cap. (dlr.de)
T he prevailing view of planet formation depicts accumulation of progressively larger objects, culminating in accretionary impacts between Moon- to Mars-sized protoplanets. (hawaii.edu)

Conclusions: LBVs are potentially the second most important source of dust in normal galaxies. (harvard.edu)

During the total lunar eclipse of December 1992, for example, volcanic dust from Mount Pinatubo in the Philippines rendered the Moon nearly invisible. (nasa.gov)
The dark patches are dune fields composed of dust-blown volcanic material on the surface that built a giant erg around the polar cap. (dlr.de)

Stronger associations were identified for home dust exposures and traumatic exposures than dust cloud. (cdc.gov)

The Earth formed 4·5 billion years ago from a swirling cloud of dust, and gases such as water vapor, carbon dioxide, ammonia and methane. (ldolphin.org)

[14] For example, cosmic dust can drive the mass loss when a star is nearing the end of its life , play a part in the early stages of star formation , and form planets . (wikipedia.org)
Thousands of minuscule wireless sensors, or "smart dust", could one-day be used to explore other planets, swirling across the landscape by subtly altering their shape. (newscientist.com)
To summarize, the Hamiltonian model will allow quick interpretation of the resonant properties of extrasolar planets and Kuiper Belt Objects, and will allow synthetic images of debris disc structures to be quickly generated, which will be useful for predicting and interpreting disc images made with Atacama Large Millimeter Array (ALMA), Darwin/Terrestrial Planet Finder (TPF) or similar missions. (lu.se)

We flew over this Saharan dust plume today in the west central Atlantic," he tweeted Sunday. (peoplesworld.org)
Every so often, when the dust plume is large enough and trade winds set up just right, the dust can travel thousands of miles across the Atlantic and into the U.S.," CNN Meteorologist Haley Brink said . (peoplesworld.org)

Scientists recently used NASA satellites to track a cloud of dust up to 2,000 km long as it left Asia, drifted across the Pacific Ocean, and traversed North America from Alaska to Florida, raining dust and possibly pollutants over the continent. (flutrackers.com)
Today, Prospero, nicknamed the "father of dust," is using a system of ground stations and satellites to study the effect that the global transport from the Sahara has on the atmospheric composition above the Caribbean. (eurekalert.org)

and an indirect effect: they affect the properties of clouds by acting as cloud condensation nuclei. (wikipedia.org)

The dust is part of something called the Saharan Air Layer (SAL), a mass of dry, dusty air that travels over the North Atlantic every three to five days between mid-June and mid-August, according to National Oceanic and Atmospheric information reported by KSL. (peoplesworld.org)

I'm tracking severe, severe clouds, more like dust storm[s]. (chartattack.com)
The image at the top of this page, acquired by HRSC on 26 May, shows a spiral-shaped dust storm, its brown colour contrasting with the white ice of the north polar ice cap below. (dlr.de)

Stars form out of giant clouds of gas and dust. (space.com)
But supernovae, typically larger stars with shorter lifetimes, had been. (scientificamerican.com)
With great care, the researchers ruled out many possibilities: instrumental errors, starspots (like sunspots but on other stars), dust rings seen around young, evolving stars (this is an older star) and pulsations that cover a star with light-sucking dust clouds. (universetoday.com)
Dust input from AGB stars in the Large Magellanic Cloud . (u-strasbg.fr)
This dust is in the constellation of Draco, in the extreme north of the sky, not far from the Big Dipper (about halfway between the "pointer stars" in the Dipper's bowl and Polaris). (syfy.com)
Reference: "Chemical Tagging with APOGEE: Discovery of a Large Population of N-rich Stars in the Inner Galaxy," published in the Monthly Notices of the Royal Astronomical Society . (astronomynow.com)
The brightest cluster stars shine at 9th magnitude and may only be visible through larger binoculars on a steady mount. (astronomy.com)
The association is named for its large population of class O and B stars, which are the largest, hottest, and brightest stars in the galaxy. (stardate.org)
Despite their brilliance, the stars are still enveloped by gas and dust, so we can't see them with our eyes alone. (stardate.org)
Aims: Luminous blue variable stars (LBVs) form dust as a result of episodic, violent mass loss. (harvard.edu)
From the stacking analysis of the 18 Class 1 and 2 objects in the LMC, we derived an integrated dust mass of 0.11 −0.03 +0.06 M ⊙ . This is two orders of magnitude larger than the value inferred from stacking 1342 extreme-asymptotic giant branch stars. (harvard.edu)
The dust mass of individual LBVs does not correlate with the stellar parameters, possibly suggesting that the dust production mechanism is independent of the initial stellar mass or that the stars have different evolutionary histories. (harvard.edu)
These disks are the byproducts of the large clouds of dust and gas that form stars. (theverge.com)
The other is that multiple stars can emerge within the giant gas cloud that is forming a new sun. (theverge.com)
This galaxy is notable for its dominant nuclear bulge, composed primarily of mature stars, and its nearly edge-on disc composed of stars, gas, and intricately structured dust. (lu.se)

This NASA/ESA Hubble Space Telescope image shows a stellar nursery known as N159 - a maelstrom of glowing gas and dark dust within one of the Milky Way's satellite galaxies, the Large Magellanic Cloud (LMC). (astronomynow.com)

Cosmic dust - also called extraterrestrial dust , space dust , or star dust - is dust that occurs in outer space or has fallen onto Earth . (wikipedia.org)
Cosmic dust of the Andromeda Galaxy as revealed in infrared light by the Spitzer Space Telescope . (wikipedia.org)
A wide range of methods is available to study cosmic dust. (wikipedia.org)
Cosmic dust can also be detected directly ('in-situ') using a variety of collection methods and from a variety of collection locations. (wikipedia.org)

Many of them coincide with regions of high dust absorption, which explains why APOGEE, observing in the infrared, was the first to detect the existence of this new stellar family. (astronomynow.com)

By the 1970s, scientists were becoming increasingly aware that estimates of global temperatures showed cooling since 1945, as well as the possibility of large scale warming due to emissions of greenhouse gases. (wikipedia.org)
Europe saw a significant drop in temperatures due to a large cloud of Saharan dust. (eumetsat.int)
Unsurprisingly, temperatures soar and partying amongst the dust clouds is commonplace. (express.co.uk)

Overall, the absorption by dust is largest in the centre than anywhere else in the Galaxy. (astronomynow.com)

The dust requires ample following distance away from the bike in front of you to avoid the dust cloud kicked up. (pashnit.com)

Acquired September 15, 2010, this natural-color image shows dust plumes spanning hundreds of kilometers over the Atlantic Ocean, just off the coast of western Africa. (nasa.gov)
The cloud gradually formed tiny clumps of matter that grew into larger planetesimals, some 10 kilometers across. (ldolphin.org)

Scientists working with Herschel have discovered that supernovae may be the culprits when it comes to the question of what filled the early universe with dust. (scientificamerican.com)

The production of silicate, silicon carbide, and iron dust is delayed until the ISM is enriched to about half the present metallicity in the LMC. (u-strasbg.fr)

The long image strips cover an area of about 2000 by 5000 kilometres, extending from the north pole equatorward to the large volcanoes Olympus Mons and Elysium Mons. (dlr.de)
Thin patches of light-coloured clouds can be seen at the outer margin of the polar cap and also several thousand kilometres away, close to the Elysium volcanoes. (dlr.de)

In principle, the Moon should be surrounded by a "cloud" of dust ejecta, thrown out into space by the constant "rain" of micrometeorites. (smithsonianmag.com)
New studies indicate that the Moon possesses a permanent dust cloud , one generated by impact and constantly filling the space surrounding that body. (smithsonianmag.com)

3 Workers labored in confined spaces with poor ventilation, a lack of dust control, and limited use of personal breathing protection. (nps.gov)
The apparatus consists of a low-speed background ventilation flow down a long box in which is placed a tray containing a rock dust powder. (cdc.gov)
The Rock Dust Dispersion Chamber ventilation flow exhibits a recirculation zone just above the powder-containing tray. (cdc.gov)

I put the term "cloud" in quotes because it is somewhat misleading - a cloud on the Earth is a collection of dust and water droplets, suspended in the air by buoyant forces provided by thermal differences. (smithsonianmag.com)
As space heating represents a large share of total energy use, thermal networks, i.e. district cooling or heating networks, would be able to increase the efficiency of the energy system in an economic way. (lu.se)

Anatomy1

Organisms9

Diseases7

Chemicals and Drugs19

Analytical, Diagnostic and Therapeutic Techniques and Equipment2

Phenomena and Processes33

Disciplines and Occupations7

Anthropology, Education, Sociology and Social Phenomena2

Technology, Industry, Agriculture13

Humanities1

Information Science13

Health Care29

Geographicals1

Particles17

Grains14

Diffuse6

Exposure5

Extinction1

Behavior1

Magellanic Clouds3

Emission9

Optically2

Storms9

Haze2

Silica dust3

Massive cloud4

Zodiacal light2

Dense Dust1

Astronomers6

Earth's2

Centers3

Amorphous2

Temperature4

Molecules1

Particle2

Amounts3

Collapse3

Characteristic2

Dynamical1

Milky Way5

Circumstellar2

Solar System4

Hydrogen2

Molecular3

Observations5

Star's light2

Nebula3

Supernova4

Atmosphere4

Fine dust3

Swirl1

Wispy1

Orbits1

Radiative2

Persistent1

Hemisphere4

Mars7

Source of dust1

Volcanic2

Exposures1

Carbon1

Planets3

Plume2

Satellites2

Condensation1

Saharan Air L1

Storm2

Stars15

Galaxies1

Cosmic4

High dust1

Temperatures3

Centre1

Ample1

Kilometers2

Herschel1

Silicate1

Kilometres2

Moon2

Ventilation3

Thermal2