I think walking, talking, conscious, intelligent life is going to be far more rare than life in general... If you're in any doubt as to the vastness and the scale of the universe...We think they could be up to two trillion galaxies, each with a few hundred billion stars.
Water is all throughout our solar system, let alone the galaxy...There are thousands of planets... These planets tend to form the same pattern as our solar system, rocky ones close to the star, giant gas planets further out.
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