RedEaredSlider (1855926) writes "Rainy seasons aren't just a regular occurrence on Earth — they also happen on Titan, the largest moon of Saturn.
The rain isn't water, it's methane. And the seasons are years long, as Titan takes two weeks to go around Saturn and Saturn takes 29 years to complete one circuit of the Sun.
Recent images from the Cassini probe, which is currently orbiting Saturn, show clouds forming in Titan's atmosphere and evidence that liquid methane is soaking the surface."
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