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cosmic dust
cosmic dust Particles with a wide range of masses (10−2–10−18g) and velocities occurring in interplanetary, circumstellar, and interstellar space. They are typically porous with low densities and a ‘cluster of grapes’ morphology, but many are compact with densities of about 2000 kg/m3. Most particles collected from the stratosphere are comprised of layer lattice silicates, olivine, or pyroxene. In the terrestrial neighbourhood, they are mostly derived from comets and asteroids.
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AILSA ALLABY and MICHAEL ALLABY. "cosmic dust." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "cosmic dust." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 30, 2012). http://www.encyclopedia.com/doc/1O13-cosmicdust.html AILSA ALLABY and MICHAEL ALLABY. "cosmic dust." A Dictionary of Earth Sciences. 1999. Retrieved May 30, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-cosmicdust.html |
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cosmic dust
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Cite this article
"cosmic dust." A Dictionary of Astronomy. 1997. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>. "cosmic dust." A Dictionary of Astronomy. 1997. Encyclopedia.com. (May 30, 2012). http://www.encyclopedia.com/doc/1O80-cosmicdust.html "cosmic dust." A Dictionary of Astronomy. 1997. Retrieved May 30, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-cosmicdust.html |
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