Methane Rains on Titan... Every 1K Years

Scientists think there are only two places in the solar system where liquid rains fall on solid land—the Earth and Saturn's moon Titan. But on Titan, that rain isn't water, it's methane, and it falls as little as once every 1,000 years in parts, according to a new paper presented at a Texas astronomy conference, reports the BBC. "You get centuries between rain showers, but when they occur, they dump tens of centimeters or even meters of rainfall," says a physicist. "That's consistent with the deeply incised river channels that we see." (More Titan stories.)