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The moon is thought to have come from the earth after a collision with something quite large. Hence the answer is : part of the snowball.
There is evidence (tillites and paleomagnetic data) for the first Snowball Earth around 780 million years ago.
Prehistoric Disasters - 2009 Snowball Earth 1-2 was released on:
USA: March 2009
snowball earth
The idea that Earth completely, or almost completely, froze over for a long time.