Wednesday, 9 November 2011

CNN News - Earth's close encounter with an asteroid, Nov 09, 2011

A giant asteroid, Vesta, is seen in an image taken from the NASA Dawn spacecraft July 24, 2011.

"New Haven, Connecticut (CNN) -- On Tuesday, asteroid 2005 YU55 is scheduled to pass near Earth, slightly closer than the moon. If you've seen the "Asteroid" (1997) or "Deep Impact" (1998) movies, you know why people pay attention to what NASA calls "potentially hazardous objects": A large asteroid hitting the Earth could cause global catastrophe.
YU55 will not hit the Earth anytime soon, certainly not in the next 100 years, according to NASA's Near Earth Object Program. Still, collisions of space rocks with the Earth must have happened many times over its 4.5 billion year history because the surface of the moon, our near sibling, is pitted with crater impacts left undisturbed by earthly weather, volcanoes, erosion or vegetation."

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