News tagged with asteroid belt

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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

Can WISE find the hypothetical 'Tyche'?

(PhysOrg.com) -- In November 2010, the scientific journal Icarus published a paper by astrophysicists John Matese and Daniel Whitmire, who proposed the existence of a binary companion to our sun, larger than ...

Feb 22, 2011
4.6 / 5 (14) 16 | with audio podcast

Solar system 'Outback' explored with new telescope

In the outer reaches of our solar system lies a mysterious region far more remote and difficult to explore than the Australian outback. It remains the only part of our solar system not visited by spacecraft. ...

Jan 12, 2011
5 / 5 (4) 1