Cloudless, Methane Rain Falls on Titan's North Pole

NASA’s Cassini orbiter captured the north pole on Saturn’s largest moon looking like a wet sidewalk after a bit of rain. This rainfall, which scientists take to signify a change in season on the moon, brought summer to Titan’s northern hemisphere earlier than scientists had predicted. This is the first time summer rainfall has ever been seen on the moon. But strangely, the rain came without any clouds.