There must be life other than our own in the universe.
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3 years ago
If life requires an Earth-like planet, there are thousands upon thousands just in our galaxy
2 years, 12 months ago
This is based on the assumption that all life has the same biochemistry, and therefore the same needs as us. It's possible that life forms can exist that are based on elements other than carbon and require things like water and sunlight to survive.
to add a premise for this argument.