Which planet best to escape Earth when our sun gets too hot?

Which planet best to escape Earth when our sun gets too hot?
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Answer :

That depends on several factors: 1.: Are humans still around by the time your sun goes Red Giant? 2.: If so, have you advanced technologically far enough for large scale interstellar travel? 3.: If not, then either Mars itself, or one of Jupiter’s moons. 4.: If so, have you discovered any Class M or terraformable extrasolar planets within reasonable travel range?
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