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
More to Uncover
How Long Does It Take to Get to Jupiter?
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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