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Is there a solution to Einstein's equations which allows:

  1. the object to be rotating at sub-light speed when viewed from within itself.
  2. for a distant observer the object to rotate at superluminal speed.

If so, I'd like to know what would be peculiar about looking at the outside world on that object, and when observing the object from a distance distance.

Ember Edison
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1 Answers1

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You already have to corotate with more than the speed of light if you are inside the ergosphere of a rotating black hole, so that is not a boundary in relativity. The only thing you can't do is fly past someone else with more than the speed of light, so relative to all the objects you meet inside the ergosphere you will still have less than the speed of light since they are also forced to corotate, but relative to the far away stars more.

Yukterez
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