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AwwwComeOnLOU t1_j6v7tgd wrote

Planetary Science: In several billion years when the sun expands, will the expansion stabilize and create a new “Goldilocks” zone. If yes, where exactly will it be and for how long will it be stable?

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Itchy-Examination-26 t1_j6w1p5r wrote

I am pretty sure the gravity of the expanded star overcomes the outward pressure caused by the fusion reaction and thus it collapses into a dwarf star that is heavily compressed. So no, it won't stabilise, but during and after its expansion, there would be new Goldilocks zones.

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loki130 t1_j6wjx97 wrote

The rate at which the sun's luminosity will change will vary at different parts of the process, but it would never really be as stable as it is now. The habitable zone has some "width" so some of the outer planets might remain in it for something like hundreds of millions of years (depending on how exactly you define it), but nothing like the billions Earth has had.

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