At least 100 billion planets alone in the Milky Way that could support life. That is just in our galaxy.
Scientists estimate over 100 billion galaxies.
The math seems overwhelming.
Its only our built in arrogance that suggests that since we have yet to find any, it does not exist. It took us until late last week to consider the possibility that running water exists on Mars. Still SETI has found nothing and the giant telescopes/cameras in deep space have seen nothing unless they have and have said nothing.
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