About the sites

Olympus Mons is the largest known volcano in the solar system. If you stood at the base of Olympus Mons, you wouldn’t be able to see the top of this shield volcano (like the volcanoes in Hawai’i).

Europa is known for its global subsurface ocean, but it also has the smoothest solid surface known of any solar system body.

Miranda, a moon of Uranus, is home to the highest known cliff in the solar system, Verona Rupes, which is thought to be 20 kilometers, or 12 miles, high.

Saturn is the sixth planet from the Sun and the second largest in the solar system, but it is famous for its extensive ring system.

Io is a moon of Jupiter that is covered in volcanoes. It is the most volcanically active body in the solar system.

Valles Marineris is the longest canyon on Mars, and it is significantly longer than the Grand Canyon in the U.S.

Pan is a strange moon of Saturn; it has a shape that is curiously similar to that of a raviolo.

Uranus makes its journey around the Sun a bit differently than the other planets; it orbits on its side.

Kandinsky Crater is a deep crater near Mercury’s north pole, and it is one of the sites where signatures of water ice have been found on the planet closest to the Sun.

The Big Red Spot (or sometimes called the Great Red Spot) on Jupiter is the largest anti-cyclone in the solar system.

Kubrick Mons is the largest moated mountain on Charon, which is a moon of Pluto.

Sputnik Planitia is one of the lobes of Pluto’s “heart”; it contains irregularly shaped polygon features that are thought to be evidence of convection cells on the dwarf planet.

Triton is a Neptunian moon that is volcanically active, but its volcanoes are cryovolcanoes, meaning they spew out very cold material.