Researchers report that Saturn's moon Enceladus is covered in superfine powdery snow. From National Geographic:
"The particles are only a fraction of a millimeter in size … even finer than talcum powder," study leader Paul Schenk, a planetary scientist at the Lunar and Planetary Institute in Houston, Texas, said in a statement. "This would make for the finest powder a skier could hope for.""Pictures: Saturn Moon Coated in Fresh Powder"
The finding is based on new high-resolution pictures of Enceladus from NASA's Cassini orbiter, as well as global maps of color patterns that help reveal the ages of surface features. Above, an artist's rendering shows an active tiger stripe, including bluish regions that indicate freshly exposed water ice.