News tagged with asteroid belt

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Asteroids' close encounters with Mars

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 ...

Nov 19, 2013
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Dawn delivers new image of Ceres

(Phys.org)—As NASA's Dawn spacecraft closes in on Ceres, new images show the dwarf planet at 27 pixels across, about three times better than the calibration images taken in early December. These are the ...

Jan 19, 2015
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When is an asteroid not an asteroid?

(PhysOrg.com) -- On March 29, 1807, German astronomer Heinrich Wilhelm Olbers spotted Vesta as a pinprick of light in the sky. Two hundred and four years later, as NASA's Dawn spacecraft prepares to begin ...

Mar 30, 2011
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