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 ...

Asteroid Impacts On Earth

Thursday, July 3rd, 2008 Posted in News, Planets, Space, Stuff | 1 Comment »

 A century ago this week, an event in far-off Siberia rang a cosmic wake-up call for Earth. That explosive event over remote Tunguska is generally viewed by scientists as a large space rock that pierced through the atmosphere of Siberia, ...