I think the proper term is circumstellar habitable zone. If there is other life out there, why are we assuming that it’ll have the same basic needs as our animals? The universe is seemingly infinite, and there’s endless possibilities of what’s out there, so why do we only consider planets that are the ‘perfect’ distance away from their star?
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Life can be literally anywhere. But, the higher the chance of liquid water, the higher the chances of life. It’s a number game. Look at 1000 goldilocks planets, or a few hundred thousand plutos
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