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Q&A What would make scientists realize that they are on a toroidal world?

In my story, a portal is opened from the Earth to an alternate world. However, this world is toroidal in shape and has a surface gravity equal to that of Earth. It rotates around an axis that goes ...

7 answers  ·  posted 8y ago by Jarred Allen‭  ·  last activity 6y ago by Jarred Allen‭

Question planets physics