News of the WeekPlanetary Science

Look, Up in the Sky! It's a Threatening Asteroid!

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Science  27 Feb 2004:
Vol. 303, Issue 5662, pp. 1272
DOI: 10.1126/science.303.5662.1272b

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Summary

The commotion triggered last month when a threatening asteroid popped up revealed that astronomers have little idea how to respond when they detect an object that might hit Earth within days.