University of Arizona, Cornell and French Researchers Map Near-Earth Asteroids

Vern Lamplot
June 21, 2000

As many as 900 large asteroids (a kilometer or greater) in the inner solar system may pose a possible threat to the Earth, according to a new study published in the June edition of the journal Science.

"Some time in the future, one of these objects could conceivably run into the Earth," warns Cornell astronomy researcher and UA alumnus William Bottke. "One kilometer (more than half a mile) in size is thought to be a magic number," says Bottke, "because it has been estimated that these asteroids are capable of wreaking global devastation if they hit the Earth."

Bottke, and astronomers from the UA's Spacewatch Project and Observatoire de la C


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