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Thursday, August 4, 2011

Earth had two moons, but one was destroyed in giant collision: new theory!

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August 4, 2011 / ANI, London / DC.

Earth had two moons, but one was destroyed in giant collision: new theory

A new theory has come up that the earth might once have had two moons, the one that shines at night today and a smaller companion, which was destroyed in a slow collision between the two satellites.
While the side of the moon facing the Earth has relatively low and flat topography, the side facing away is high and mountainous with a much thicker crust.
Scientists have proposed different theories to explain this lack of symmetry. One leading idea is that gravitational tidal forces reshaped the moon’s crust and made it lopsided.


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