A fascinating new NASA video gives us a glimpse into the atmosphere of one of our solar system neighbors like never before. The footage shows cloud streaks developing, moving and eventually fading above the surface of Titan, the largest moon of Saturn. Traveling at a speed of about 14 to 22 miles per hour (22.5 to 35.4 kph), the clouds are composed of methane.
Besides Earth, Titan is the only other body in the solar system where we’ve found large amounts of liquid on its surface. NASA’s time-lapse video above was created using a narrow-angle camera and infrared filters over a period of 11 hours, with one image taken every 20 minutes. While the Cassini probe has photographed clouds on Titan before, most have been one-off snapshots — this new sequence of images is the best instance yet of allowing scientists to examine cloud formation and movement on Titan.