Scientists realize that planet Earth has extremely rare conditions that allow it to support life at a time when most of the universe is uninhabitable. Consider just these six conditions: (1) Life must be in the right type of galaxy, (2) life must be in the right location in the galaxy, (3) life must have the right type of star, (4) life must have the right relationship to the host star, (5) life needs surrounding planets for protection, and (6) life requires the right type of moon. And this is just the beginning!
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