Wispy Lines

Saturn's second-largest moon, Rhea

A closer look at the surface of Rhea, Saturn’s second-largest moon, reveals some of its signature “wispy lines”…the bright exposed faces of steep cliffs on the icy 950-mile-wide moon.

Taken by the Cassini spacecraft on June 3, 2010, the image above has been level-adjusted to bring out surface details. Being composed of 75% water ice, Rhea is highly reflective and the original raw image was a bit overexposed.

Image: NASA/JPL/Space Science Institute