Galilean Moons

By bfanzell

  • Introduction

    Welcome to my first timetoast timeline. This timeline is about the history of the Galilean moons of Jupiter. I hope you will enjoy reading about it.

  • Galileo`s Discovery

    Galileo`s Discovery
    In 1610 Galileo Galilei looked through a small telescope at Jupiter and discovered four objects around it. At first, he thought they were stars but each day he looked at them and they were in different locations around Jupiter. That’s when he realized they were moons orbiting around Jupiter. This changed the way he thought about the universe. The moons were named Io, Europa, Callisto and Ganymede.

  • Pioneer 10

    Pioneer 10
    In 1973 Pioneer 10 became the first probe to fly by Jupiter. It took pictures of Ganymede, Callisto and Europa but not Io because too much radiation from Jupiter had damaged the camera.

  • Pioneer 11

    Pioneer 11
    In 1974 Pioneer 11 took over 200 different photos of Jupiter’s moons.

  • Voyager 1

    Voyager 1
    In 1979 Voyager 1 flies by Jupiter’s moons and discovers that Ganymede has tectonic plates and that Io is volcanic.

  • Voyager 2

    Voyager 2
    On April 24, 1979 Voyager 2 gets photos of the entire Jovian system including Ganymede Callisto, Io and Europa, as well as many smaller moons.

  • Galileo Probe

    Galileo Probe
    In 1996, the Galileo probe confirms there is an ice shell and water on Europa.

  • Io`s Eruption

    Io`s Eruption
    In 1997, Hubble the space telescope, spots volcanoes erupting on Io. The Galileo probe also sees these eruptions.

  • Cassini Probe

    Cassini Probe
    The Cassini probe flies around Jupiter and takes photos of the Jovian system in 2000.

  • Water on Europa

    Water on Europa
    In 2016 NASA’s Hubble telescope spots water shooting out of Europa’s icy surface. This is more proof there is water on Europa.

  • Future Missions

    Future Missions
    In 2030, the probes, JUICE and Europa Clipper, are expected to arrive in the Jovian system. They will continue to study Jupiter and its largest moons.

  • Bibliography

    Benson, Michael. Otherworld: Visions of Our Solar System. New York: Abrams, 2017.
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    https://tinyurl.com/y6e9sg93

  • Conclusion

    Now you should know the history of Jupiter's most famous moons. I hoped you enjoyed reading it. Thanks for reading.