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Q&A Could two planets be tidally locked to each other so close they share their atmosphere?

Could two planets be tidally locked to each other at such a small distance from one another that they share their atmosphere, and material is floating around between the two?

6 answers  ·  posted 10y ago by Sheraff‭  ·  last activity 5y ago by Sheraff‭

Question reality-check planets physics orbital-mechanics