Space: Saturn's brightly reflective moon Enceladus

A brightly reflective Enceladus appears before Saturn's rings, while the planet's larger moon Titan looms in the distance. 
Jets of water ice and vapor emanating from the south pole of Enceladus, which hint at subsurface sea rich in organics, and liquid hydrocarbons ponding on the surface on the surface of Titan make these two of the most fascinating moons in the Saturnian system.

NASA Image Gallery. Image credit: NASA/JPL-Caltech/Space Science Institute