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Science 5 April 2002:
Vol. 296. no. 5565, p. 27
DOI: 10.1126/science.296.5565.27a
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News of the Week

IMPACT HAZARD:
Celestial Billiards Threaten Hit in 2880

Richard A. Kerr

On page 132 of this issue, a team of researchers reports that the 1-kilometer asteroid 1950 DA has up to a 1-in-300 chance of clobbering Earth with a 10,000-megaton punch on 16 March 2880. But a pivotal uncertainty is how the asteroid spins.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)