Snow on Saturn’s moon

Surface of Saturn's moon Enceladus

Saturn’s moon Enceladus might be a skier’s paradise. High-resolution maps of the sixth-largest moon of the giant ringed planet confirm that wintry conditions prevail on the icy body. Cryovolcanoes at the south pole shoot large jets of water vapour, volatiles and solid particles (ice crystals, NaCl particles, etc.) into space, totalling approximately 200 kg per second. Some of this falls back onto the moon as “snow” at less than a thousandth of a millimetre per year. To build up roughly 320 feet of the stuff would require a few tens of millions of years or so!