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Questions on astronomical objects orbiting a star massive enough to be rounded, not massive enough to cause fusion, and which have cleared its orbit of planetesimals.

3 votes
2 answers
531 views

Why are solar systems heliocentric

But it seems to me that planets and stars are just bodies of mass, so are there cases of solar systems where the star is just one of the bodies of the system and orbits around a super massive planet? … And similarly are there 'solar systems' without stars, where there are a group of planets orbiting a massive planet at the center of the system? …
The Nightman's user avatar