Space/Science — HabitableZone

Space/Science » in reply to Superearths more likely around red dwarfs--speculations on exotic planets

It depends upon the composition.

A planet without a metallic core, or with a much smaller one, could be much larger than Earth and still have a 1 g surface acceleration. Even Jupiter's surface (I use that term loosely) gravity is only about 2.5 times that of Earth, because the planet's density is so low.

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