Enceladus
Enceladus is one of the moons of Saturn. Covered in ice, it has the highest albedo (reflectivity) of anything in the solar system. The Cassini probe has made some awesome discoveries about Enceladus in 2005, including a “hotspot” at the southern pole: Saturn moon delights and baffles (BBC).
Astronomy Picture of the Day for 2005 09 06: Fresh Tiger Stripes on Saturn’s Enceladus.
“The tiger stripes on Saturn’s moon Enceladus might be active. Even today, they may be spewing ice from the moon’s icy interior into space, creating a cloud of fine ice particles over the moon’s South Pole and creating Saturn’s mysterious E-ring….”