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Dione in front of Titan - 2 of Saturn's many moons
Jupiter and its moon Io. The red dot is a volcano on the moon's surface and the blue cloud is the volcano's emissions
The Cassini spacecraft took this view of Saturn’s moon Dione in October 2005, with the tranquil gold and blue hues of Saturn in the distance. The horizontal stripes near the bottom of the image are Saturn's rings
A dramatic view of Phobos (one of the moons of Mars) and its Stickney crater acquired by HiRES in March 2008.
Moons are cool :) ... infograph
Wow, look at the size of Valles Marineris.