BLUExEYES47 BLUExEYES47

31-08-2016
Advanced Placement (AP)

contestada

Why do astronomers think that there may be other advanced civilizations?

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anonymous00000 anonymous00000

31-08-2016

because space is so huge that it would be silly to think that were the only ones

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maddy846627 maddy846627

01-09-2016

So much of space is unexplored and there are possible signs of previous life on planets such as Mars

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