MadSci Network: Earth Sciences

Re: Is it possible for a large enough asteroid to break the Earth apart?

Date: Thu Feb 22 15:56:39 2007
Posted By: Kisha Delain, Graduate Student
Area of science: Earth Sciences
ID: 1169708167.Es

Asteroids are not large enough to cause the Earth to break apart. 
Something large enough to cause that much damage to the Earth would have to
be planet-sized.  Indeed, long ago during the formation of the planets,
Earth was struck by something roughly the size of Mars.  This ejected a
great deal of material from the Earth, which then condensed to form the moon.

There are no longer any objects that cross the Earth's orbit that are large
enough to break the Earth apart.

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