Explore these ideas and more!

Valhalla Crater on Callisto. Callisto is the most heavily cratered satellite in the Solar System. Its surface has apparently been primarily sculpted by impacts. Valhalla is its largest crater - it's 360 km (225 miles) across and the rings extend to 1900 km (1190 miles) from its center. (Photo: NASA) ©Mona Evans,"Jupiter's Galilean Moons" http://www.bellaonline.com/articles/art42279.asp

Earth from The Moon, by NASA.

Callisto, moon of Jupiter


Jupiter has 64 moons, and from top to bottom, the moons shown are Io, Europa, Ganymede and Callisto.


MRO image of the side of a crater on Mars.

The Moon

"The Moon and the Morning Star" -- The moon and Venus as seen by the Clementine probe in 1994; the moon is eclipsing the sun in this photo, resulting in a glow over the horizon.

Victoria crater, Mars

Stickney Crater, the largest crater on the martian moon Phobos

The craters and fissures in the northern regions of Saturn's moon Enceladus

Phobos, moon of Mars. #mars #phobos #moon #space

Voyager 1 image of Jupiter's Great Red Spot. NASA/JPL

Moons of Jupiter

Crescent Dione from Cassini, October 11, 2005 ~ Thin crescent of cratered terrain is illuminated on Saturn's fourth largest moon, Dione. As it departed its encounter with Saturn's moon Dione, Cassini sailed above an unreal landscape blasted by impacts. The rising Sun throws craters into sharp contrast and reveals steep crater walls.The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency

The moons of the solar system

Titan- one of the coolest moons in the solar system. #moon #titan #saturn

Enceladus - moon of Saturn

Uranus rings and moons

The moon from space .... pic.twitter.com/ro1PrT2Nl9