News tagged with dawn spacecraft

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Dawn approaches asteroid Vesta

After three and a half years years of thrusting silently through the void, NASA's Dawn spacecraft is on the threshold of a new world. It's deep in the asteroid belt, less than 4 months from giant asteroid ...

Apr 08, 2011
5 / 5 (6) 3 | with audio podcast

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
4.8 / 5 (10) 4 | with audio podcast

Dawn opens its eyes, checks its instruments

(PhysOrg.com) -- After a hibernation of about six months, the framing cameras on board NASA's Dawn spacecraft have again ventured a look into the stars. The spacecraft also powered up its visible and infrared ...

Mar 22, 2011
4.7 / 5 (6) 2 | with audio podcast

Engineers Assess Dawn's Reaction Wheel

(PhysOrg.com) -- Engineers are studying the reaction wheels on NASA's Dawn spacecraft after automatic sensors detected excess friction building up in one of them and powered it off early on the morning of ...

Jun 30, 2010
4 / 5 (3) 0

Dawn Finishes Mars Phase

(PhysOrg.com) -- With Mars disappearing in its metaphorical rearview mirror, NASA's Dawn spacecraft's next stop is the asteroid belt and the giant asteroid Vesta. Dawn got as close as 549 kilometers (341 miles) ...

Feb 27, 2009
4.7 / 5 (3) 0

NASA Spacecraft Falling For Mars

(PhysOrg.com) -- Launched in September of 2007, and propelled by any one of a trio of hyper-efficient ion engines, NASA's Dawn spacecraft passed the orbit of Mars last summer. At that time, the asteroid belt ...

Feb 13, 2009
4.3 / 5 (12) 2
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