There could be water rain on other planets around other stars just like ours, but we haven’t seen it yet.
On Titan, the moon of Saturn, the seas are made of methane, so methane reans out of the sky just like water does on Earth.
Bout out in cold space you can’t get rain because there is no pools of water to evaporate it from, and it is so cold it would just turn to ice anyway. You can get a kind of rain made out of rock, called ‘micrometeorites’ and these float around in space and make tiny tiny craters when they hit!
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