Jupiter is not only the biggest planet in our solar system, but new research confirms it's also the oldest. How do we know? Researchers found some tell-tale signs in meteorites.
Two Kinds of Meteorites
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How Long Does It Take to Get to Jupiter?
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Key Facts In This Video
Jupiter's moons Europa, Callisto, and Ganymede might contain liquid water under their icy shells. 00:30
The first spacecraft to reach Jupiter was NASA's Pioneer 10. It took 640 days to get there. 01:33
The only craft to actually orbit Jupiter was NASA's Galileo spacecraft. Its journey was 2,242 days. 02:41
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