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Q&A Can a star change color periodically by high orbital speed?

I'm imagining a situation that we can see a star change color periodically: A star and Earth orbit around a black hole The star is very near to the black hole so that it has high orbital speed, w...

3 answers  ·  posted 7y ago by Gstestso‭  ·  last activity 7y ago by Gstestso‭

Question reality-check planets orbital-mechanics