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Jupiter was formed at the same time as the rest of the solar system, from a large spinning disk of gas and dust. Astronomers think that all this happened about 4.6 billion years ago! So Jupiter is about 4.6 billion years old.


Astronomers believe the Sun formed about five billion years ago. Most of the other bodies in the solar system formed shortly thereafter (within 100-150 million years), though Jupiter was likely the first of these to form, which is why it is the largest.

Rocks on Earth have been dated to nearly 4.9 billion years, so it is likely Jupiter is only slightly older (perhaps 50 million years older), though, of course, the exact age of both is not known for certain.

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9y ago

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