Dust
hideDust is a general name for minute solid particles with diameters less than 20 thou (500 micrometers). Particles in the atmosphere arise from various sources such as soil dust lifted up by wind, volcanic eruptions, and pollution. Dust in homes, offices, and other human environments consist primarily of human skin cells, but also contain small amounts of plant pollen, human and animal hairs, textile fibers, paper fibers, minerals from outdoor soil, and many other materials which may be found in the local environment.
For more information about Dust, read the full article at
Wikipedia.
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News tagged with dust
Scientist uncovers relics of ancient cosmos
Space & Earth / Space Exploration
Dec 14, 2009 |
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(PhysOrg.com) -- A University of Manchester scientist, working as part of an international team, has uncovered an unexpectedly rich trove of relicts from the ancient cosmos.
The Energy Sources of Ultraluminous Galaxies
Nov 27, 2009 |
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(PhysOrg.com) -- Ultraluminous infrared galaxies ((ULIRGs) are galaxies whose luminosity exceeds that of a trillion suns; for comparison, the Milky Way galaxy has a typical (and much more modest) luminosity ...
Largest Ring Around Saturn Discovered
Oct 07, 2009 |
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(PhysOrg.com) -- NASA's Spitzer Space Telescope has discovered an enormous ring around Saturn -- by far the largest of the giant planet's many rings.
Heart of a galaxy emits gamma rays
Oct 02, 2009 |
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(PhysOrg.com) -- Quite a few distant galaxies turn out to be cosmic delivery rooms. Large numbers of massive stars are born in the hearts of these starburst galaxies, and later explode as supernovae. In the ...
Cassini Reveals New Ring Quirks, Shadows During Saturn Equinox
Space & Earth / Space Exploration
Sep 21, 2009 |
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(PhysOrg.com) -- NASA scientists are marveling over the extent of ruffles and dust clouds revealed in the rings of Saturn during the planet's equinox last month. Scientists once thought the rings were almost ...
Warped debris disks around stars are blowin' in the wind (w/ Video)
Aug 28, 2009 |
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(PhysOrg.com) -- The dust-filled disks where new planets may be forming around other stars occasionally take on some difficult-to-understand shapes. Now, a team led by John Debes at NASA's Goddard Space Flight ...
Rethinking Brownian motion with the 'Emperor's New Clothes'
Jul 27, 2009 |
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In the classic fairy tale, "The Emperor's New Clothes," Hans Christian Andersen uses the eyes of a child to challenge conventional wisdom and help others to see more clearly. In similar fashion, researchers at the University ...
Why Are Galaxies So Smooth?
May 01, 2009 |
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(PhysOrg.com) -- Using NASA's Spitzer Space Telescope, an international team of astronomers has discovered streams of young stars flowing from their natal cocoons in distant galaxies. These distant rivers ...
Atmospheric lead causes clouds to form more easily, could change pattern of rain and snow
Space & Earth / Earth Sciences
Apr 19, 2009 |
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(PhysOrg.com) -- By sampling clouds -- and making their own -- researchers have shown for the first time a direct relation between lead in the sky and the formation of ice crystals that foster clouds. The ...
Does prebiotic material exist in space?
Mar 26, 2009 |
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Spanish and French astrophysicists have identified a band in the infrared range that serves to track the presence of organic material rich in oxygen and nitrogen in the interstellar dust grains. Should any ...
Dust plays larger than expected role in determining Atlantic temperature
Space & Earth / Earth Sciences
Mar 26, 2009 |
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(PhysOrg.com) -- The recent warming trend in the Atlantic Ocean is largely due to reductions in airborne dust and volcanic emissions during the past 30 years, according to a new study.
Rotation is key to understanding volcanic plumes
Space & Earth / Earth Sciences
Mar 25, 2009 |
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(PhysOrg.com) -- A 200-year-old report by a sea captain and a stunning photograph of the 2008 eruption of Mount Chaiten are helping scientists at the University of Illinois better understand strong volcanic ...
Mars Express zeroes in on erosion features
Space & Earth / Space Exploration
Mar 19, 2009 |
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(PhysOrg.com) -- Mars Express has uncovered geological evidence suggesting that some depositional process, revealed by erosion, has been at work on large scales in the equatorial regions of the planet. If ...
Galaxy Cores to Crash in a Few Million Years
Mar 16, 2009 |
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(PhysOrg.com) -- A new image from NASA's Spitzer Space Telescope offers a rare view of an imminent collision between the cores of two merging galaxies, each powered by a black hole with millions of times the ...
Swift, Fermi probe fireworks from a flaring gamma-ray star (Video)
Feb 10, 2009 |
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(PhysOrg.com) -- Astronomers using NASA's Swift satellite and Fermi Gamma-ray Space Telescope are seeing frequent blasts from a stellar remnant 30,000 light-years away. The high-energy fireworks arise from ...
