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MostBotsAreBad t1_jd8q0c2 wrote

This is still only in the range of Life As We Know It. We literally do not know the range of Life Other Than That, although it's suspected that it requires a certain range of chaos -- that is, a reasonably consistent range of energy transfer in a consistent environment.

Life seems to need environmental energy being used to create and perpetuate (and, probably, replicate) patterned formations. We don't know that it has to be water-based, or even chemical. Electromagnetic-pattern lifeforms could exist, for all we know, just for instance, so it may be that most life in the universe exists entirely within stellar bodies.

Or not. But we don't know. It could be that most life on Earth exists in the hot rock miles beneath the surface and isn't water-based at all.

Still, we're probably mostly interested in water-based life that's at least pretty much Life As We Know It. Unless deep hot-rock organisms ever breach the surface, in which case we'd be very interested in that, especially if they're quite large.

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