The source of the meteorites

Sunday, July 13th, 2008 Posted in News, Planets, Space, Stuff | 1 Comment »

They were ejected from their asteroidal “parent body” after a collision, were injected into a new orbit, and they finally felt onto the Earth. Meteorites are a major tool for knowing the history of the solar system because their composition ...

Volcanic Activity on Mercury

Thursday, July 3rd, 2008 Posted in News, Planets, Space, Stuff | No Comments »

In 1975, the Mariner 10 spacecraft returned intriguing images that showed smooth plains covering large swaths of Mercury's surface. But scientists could not determine whether the plains had been created by volcanic activity or by material ejected from below the ...

Black Holes NASA’s Chandra X-Ray Observatory

Wednesday, July 2nd, 2008 Posted in Nasa, News, Space, Stuff | No Comments »

 Not even light can escape a black hole's grip, but gas falling into a black hole can heat up and become an intense source of X-rays, at temperatures up to 1,000 times hotter than the sun. Astronomers use the Chandra ...