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cosmic dust |
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cosmic dust [′käz·mik ′dəst] (astronomy) Fine particles of solid matter forming clouds in interstellar space. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The Stardust capsule collected samples of interstellar dust using the back of the comet-dust collector. 6-billion-kilometer journey, a space capsule carrying comet and interstellar dust landed in the Utah desert on Jan. The theory is that in this motion the Earth occasionally moves through clouds of interstellar dust cooling its surface, and that this is the cause of our periodic ice ages. |
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