Although we know a lot about the planets in our solar system, we have much more to learn. Scientists want to know more about the composition of the planets and their atmospheres. Some people wonder whether life ever existed on these lonely outposts.
Galileo


  • One way for scientists to learn more is by sending unmanned spacecraft to the other planets. The Galileo Jupiter orbiter spacecraft was launched on October 18, 1989, to explore Jupiter and its satellites. Click on Galileo to learn more about this spacecraft and its mission.
    Galileo carried a probe that was used to evaluate Jupiter's rings. moons. atmosphere.
    • Jupiter rings


  • Galileo has shown that Jupiter's rings are formed by dust caused by metorites colliding with
    Jupiter's inner moons
    Galileo
    the sun

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