Io

Moons

In addition to the Earth, the planets Mars, Jupiter, Saturn, Uranus and Neptune have moons.

Since the Voyager 1 and 2 probes began returning images of Saturn and Jupiter's moons in the late 1970s and early 1980s, scientists have become more interested in planetary satellites. Europa and Titan are considered to be potential locations where life could exist and have recently been studied with unmanned probes.

Photo: Image of Io created from data gathered by the Galileo probe (NASA/JPL)

All Moons [19]

  • Amalthea Amalthea

    Jupiter's moon is the reddest object in the Solar System.

  • Ariel Ariel

    This heavily fractured moon was visited by Voyager 2.

  • Callisto Callisto

    Jupiter's second largest moon has an ancient surface.

  • Deimos Deimos

    One of Mars' tiny moons, Deimos was discovered in 1877.

  • Enceladus Enceladus

    Saturn's bright moon is home to ice fountains.

  • Europa Europa

    Jupiter's smooth moon may have subsurface oceans.

  • Ganymede Ganymede

    The Solar System's largest moon orbits Jupiter.

  • Iapetus Iapetus

    This moon of Saturn has a dark side.

  • Io Io

    Jupiter's moon is the Solar System's most volcanically active body.

  • Mimas Mimas

    Saturn's small moon is home to a very large crater.

  • Miranda Miranda

    Uranus's moon has a patchy face.

  • Moon Moon

    Earth's satellite had a turbulent birth.

  • Phobos Phobos

    Are Mars's moons really captured asteroids?

  • Phoebe Phoebe

    An oddball moon orbits Saturn.

  • Rhea Rhea

    Saturn's most heavily cratered moon was discovered in 1672.

  • Tethys Tethys

    Saturn's moon has a huge canyon.

  • Titan Titan

    Titan is the only moon with a dense atmosphere.

  • Titania Titania

    Voyager 2 showed astronomers close-up views of Titania.

  • Triton Triton

    Triton's unusual orbit is an important clue about its past.

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