Dust Storm
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Dust expelled from an exploding star engulfs a cluster of nearby stars in this false-color image from two space-based observatories.
Dust Grain
The structure of an interstellar dust grain
Interstellar dust grains have their origin in the material ejected by stars.
Dust is a general name for minute solid particles with diameter less than 500 micrometers (otherwise see sand or granulates) and, more generally, for finely divided matter.
Dust
When the white flame in us is gone,
And we that lost the world's delight
Stiffen in darkness, left alone
To crumble in our separate night; ...
Definition: dust: Not the dust one finds around the house (which is typically fine bits of fabric, dirt, and dead skin cells).
Dust grain formation
The large grains start with the silicate particles forming in the atmospheres of cool stars, and carbon grains in the atmospheres of cool carbon stars.
Dust Disk
NASA, JPL, University of Florida
Larger false-color and black and white images.
Alien dust found around distant proto-planets
DR EMILY BALDWIN
ASTRONOMY NOW
Posted: 07 January 2010 ...
Cosmic dust is a type of dust composed of particles in space which are a few molecules to 0.1 mm in size.
Dust has been observed in two guises - optical/UV absorption and far-IR emission.
Typical dust storms are kicked up in one of the lowest areas on the Martian surface - the Hellas Basin.
Nebulae - The Dust of Stars
The Orion Nebula
Click on image for full size
NASA
Nebulae are stardust. The gas in nebulae is used to make new stars. Dying stars create nebulae from their gas.
also called micrometeoroid, micrometeorite, or cosmic dust particle ...
Reflections on a Mote of Dust
On September 11, 2001, coordinated acts of terrorism were carried out against the World Trade Center in New York City, the Pentagon in Washington, D.C., and against four U. S. civil air liners.
Dust Disk and Planets?
In the 1980s, the Infrared Astronomical Satellite (IRAS) revealed an "excess" of far-infrared radiation in the spectrum of AU Mic.
Dust tail--The most visible part of the comet made of dust particles from the nucleus. Dust tails are very long and smoke-like.
Dust covers were made out of thin plywood to close both ends of the secondary cage.
dust tail The component of a comet's tail that is composed of dust particles.
dwarf Any star with radius comparable to, or smaller than, that of the Sun (including the Sun itself).
Dust: Tiny grains of material (e.g., carbon and silicate grains) that are about 0.1-1.0 micron in size. Dust in interstellar space blocks and scatters visible light.
DUST CLOUDS IN THE POLAR REGIONS
The bright, yellowish red haze over the polar regions is another indicator of possible dust activity somewhere on the globe of Mars.
Dust- microscopic grains in space that absorb starlight; the grains are "soot" left by dying stars, and they will sometimes clump together in huge dark clouds
Dwarf star- a star, such as the sun, that lies on the Main Sequence ...
dust
The small particles which occupy the interstellar medium.
dust tail
The tail of a comet which is caused by radiation pressure forcing the dust particles away from the coma in a curved arch.
DUST - Grains of carbon and silicate ~0.1-1.0 μm in size. Dust grains are a major component of the interstellar medium.
Dust Donuts - Out of focus shadows that look like donuts that are caused pieces of dust on the sensor or cover glass in front of the sensor.
Dynamic Range - The range of brightness from light to dark in which detail can be recorded.
dust tail (type II): The tail of a comet formed of dust blown outward by the pressure of sunlight. (See gas tail.) ...
Dust Tail - A comet tail that is luminous because it contains dust that reflects sunlight. The dust in a comet tail is expelled from the nucleus of the comet
Dwarf - A main sequence star ...
DUST
Interstellar dust is composed of mictoscopic bits (on the order of a micron in diameter) of carbon and/or silicates. The origin of interstellar dust in unknown, but it seems to be associated with young stars.
Cosmic Dust Detective →
Physics doctoral candidate Farisa Morales had two internships at NASA's Jet Propulsion Laboratory before landing a job as a scientist working with the Spitzer Space Telescope.
Do Tread on Me ...
Dust Tail: The dust tail is a long, wide tailcomposed of microscopic dust particles that are buffeted by photons emitted from the Sun; this tail curves slightly due to the comet's motion. The tail fades as the comet moves far from the Sun.
Dust analyzer measures dust particles' electric charge, direction and speed of impact, and the particles' mass and chemical composition, using impact ionisation.
Dust storms. Frequently, and with some regularity, the surface of Mars is obscured completely owing to atmospheric dust storms. Although such storms can apparently happen at any time, they often occur when the planet is near perihelion.
dust tail - up to 10 million km long, it is composed of smoke-sized dust particles driven off the nucleus by the escaping gases (this is the most obvious part of a comet to the naked eye); ...
Dust, gas, and other debris found within the solar system.
Interplanetary Space
The region of space surrounding our Sun. Asteroids, comets, Earth, and the solar wind are examples of things occupying interplanetary space.
Dust Plume
This is an example of a dust plume in the Solis Planum region. This image was taken during the springtime for this region.
dust grain A term for dust particles in the space between the stars. Sizes vary over a wide range but are typically about one micrometer, comparable to the wavelength of visible light.
Dust: Tiny grains of stuff, e.g., carbon grains (soot) and silicate grains (sand) that are about 0.1-1.0 micron in size. Dust grains are a major component of the interstellar medium. Dust blocks visible light causing interstellar extinction.
dust
Not the dust one finds around the house (which is typically fine bits of fabric, dirt, and dead skin cells). Rather, irregularly shaped grains of carbon and/or silicates measuring a fraction of a micron across which are found between the stars.
The dust grains in comets absorb light from the Sun. This causes the dust grains to heat up and glow in the infrared.
The dust is blown away from the coma by radiation pressure from the sunlight absorbed by individual dust grains.
The dust particles collide with each other and form into larger particles. This goes on until the particles get to the size of boulders or small asteroids.
The dust keeps out heating starlight, and the darkest clouds are thus naturally cold, near absolute zero, which allows the formation of molecules and ultimately the collapse of the gas to form stars.
(a) Dust particles in the space between the stars. These are responsible for the dark patches of obscuration seen on astronomical photographs.
Dark dust lanes and bright HII regions in the spiral arms of M51, the Whirlpool Galaxy.
Gas and Dust
Disks contain substantial amounts of gas and dust; halos contain little of either.
Very abundant in gas and dust.
Gas and dust that are sucked into a black hole do not dive straight in, but move in an orbit around it as they slowly spiral inwards.
Gas and dust between the planets.
interstellar cloud - (n.)
A region of relatively high density in the inter- stellar medium.
When the dust storm finally subsided in early 1972, Mariner 9 discovered that we had been badly misled by the earlier flyby missions that had seen only small (in retrospect, unrepresentative) portions of the surface.
A cloud of dust and gas in space. Some are luminous and some nebulae are dark.
Nova
The apparent 'brightening of a star' in the sky. This is caused by material drawn from a companion star igniting.
In 1998, a dust ring, perhaps similar to the cloud of comets surrounding our own solar system, was discovered around the very young star epsilon Eridani.
EZ Aquarii is actually a triple system of red dwarf stars.
Cosmic Dust Analyzer (CDA) : The Cosmic Dust Analyzer (CDA) is a direct sensing instrument that measures the size, speed, and direction of tiny dust grains near Saturn.
the gas and dust located between the stars
ion
an atom that is electrically charged due to the loss or gain of one or more electrons ...
The gas and dust distributed between the stars.
Interstellar Reddening
The process in which dust scatters blue light out of starlight and makes the stars look redder than they actually are.
Interstellar dust Solid clumps of particles (atoms, molecules, and/or ions) in the interstellar medium. They may have a charge due to some loss of electrons.
Interstellar Dust
Small particles of solid matter, similar to smoke, in the space between stars.
Interstellar Medium (ISM) ...
interstellar dust
van de Hulst
interstellar hydrogen, 21.1 centimeters in wavelength ...
Vocabulary
dust extinction interstellar medium reddening
Review Questions ...
air vehicle = aircraft Aitken dust counter An instrument developed by John Aitken for determining the dust content of the atmosphere.
This is another dust-rich nebula, and is about 60 percent as bright as M20. Nearly 40 light years across, it occupies an area nearly 10 times further across than the distance between the sun and the next nearest star to us, Proxima Centuri.
An area of dust or gas surrounding the nucleus of a comet.
Comet
A gigantic ball of ice and rock that orbit the Sun in a highly eccentric orbit.
Another way that dust manifests itself is in the reflection nebula. Unlike emission nebula which produce light directly from emission from atoms in the nebula, a reflection nebula merely reflects light from some other source, typically a nearby star.
 See also: Light, Earth, Sun, Solar, Planet
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