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Door 27 in the 2010 advent calendar

Emily Lakdawalla • December 27, 2010

Time to open the twenty-seventh door in the advent calendar. Where in the solar system is this flat-floored depression?

Boulders and Ponds on 433 Eros

Emily Martin • December 13, 2010

There is really cool geology being explored on large, oddly shaped asteroids. The Near Earth Asteroid Rendezvous (NEAR) mission reached 433 Eros in 2000, and one of the exciting results was the discovery of features called "ponds".

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