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

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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. Then answer the questions.

 

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 meteorites colliding with
 Jupiter's inner moons      unmanned spacecraft     the Sun
  
Press the button to see how well you did.    

 

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