Morning Overview on MSN
Could NASA actually push an asteroid off course in time?
Planetary defense has moved from science fiction to a live engineering problem, and the stakes could not be higher. The ...
One of the NEAs, 99942 Apophis, which was discovered in 2004, is arriving on (of all the freaking dates) Friday the 13th in ...
Images from a 2D Spheral simulation showing the fragmentation of the Chelyabinsk bolide as it descends through the atmosphere. Credit: LLNL Planetary Defense program Images from a 2D Spheral ...
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