| Topic: |
Science > Physics |
| User: |
"Sam Wormley" |
| Date: |
26 Mar 2006 08:04:32 PM |
| Object: |
Comet Sampler: Fire meets ice |
Comet Sampler: Fire meets ice
http://www.sciencenews.org/articles/20060325/fob7.asp
The first study of comet dust brought to Earth by a spacecraft has
revealed several minerals that could have formed only at the fiery
temperatures close to the sun or another star. The findings come as a
surprise because comets, frozen relics of the early solar system, were
born beyond the orbit of Neptune and spend most of their time there.
Don Brownlee of the University of Washington in Seattle and his
colleagues base their findings on the first particles they've examined
from the Stardust craft, which sped within 236 kilometers of the
nucleus of Comet Wild 2 in 2004 and collected material expelled by the
frozen body.
See: http://www.sciencenews.org/articles/20060325/fob7.asp
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