Earth-threatening Asteroids
It is believed that dinosaurs were wiped out from the earth as a result of an asteroid hitting the planet. Will asteroid strike the Earth again and wipe out all life as we know it? Astronomers are looking for asteroids that can hit the earth in future. Edited by Ashraf .
Channels: Others
Tags: asteroids astronomy nasa esa spitzer hubble space telescopes earth threatening impacts science planetoids solar systems sun planets meteoroids comets 2012
Uploaded by: anja ( Send Message ) on 08-04-2010.
Duration: 0m 0s
