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View Full Version : Why Eros Has So Few Craters



Fraser
2005-Sep-09, 01:48 AM
SUMMARY: When the NEAR spacecraft approached the Asteroid Eros in 2000/2001, scientists found much less small impact craters than they were expecting. Either there are less small asteroids in the Solar System than scientists were expecting, or something's happening on the surface of Eros to obscure the impact craters. Researchers from the University of Arizona think they have an answer: seismic shaking. Whenever Eros is struck by a small asteroid, it sets off shaking across the entire asteroid. Loose material creeps across the surface, down slopes, and can fill up older craters, obscuring them completely.

View full article (http://www.universetoday.com/am/publish/eros_few_craters.html)
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