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Ask an Astrophysicist

The Question

(Submitted June 04, 2004)

How long until the Sun becomes a red giant?

The Answer

The Sun will become a red giant in about 5 billion years, which is slightly more time than it has already been a star. There's a lot of nice information about the Sun at

Hope that helps.

-Kevin and Dirk,
for "Ask an Astrophysicist"

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