Scaled model of our solar system that shows the area where water would be in liquid form. In any star system one would expect life to evolve where there is water and one giant planet to attract meteors away from the prospective life bearing planet. We have evidence of many stars (if not most of them) having planets thus the expectation for a water bearing planet should very frequent. Given the huge number of star systems we are very likely to be didtant contempraries of other living beings. #aliens #biosphere #earth #ecosphere #goldilocks #planet #solar #sun #system #zone
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