Why is water considered an essential for life on other planets?
I don't really pay an awful lot of attention to thinks related to life in space, mainly other areas is where my interests are more concentrated at.
I have picked up the idea that without water, life will not exist but is that only assumed because all life on our planet requires water? Maybe life on other planets don't need water.
Sorry if this is a very silly question, I know very little about biology.
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