Tuesday, 19 November 2013

Asteroids' close encounters with Mars: Mars, not Earth, shakes up some near-Earth asteroids

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For nearly as long as astronomers have been able to observe asteroids, a question has gone unanswered: Why do the surfaces of most asteroids appear redder than meteorites -- the remnants of asteroids that have crashed to Earth?

via Science Daily

Zazzle Space Exploration market place

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