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Q&A How might a civilization artificially keep a supermassive black hole electrically charged for the lifetime of the black hole?

A civilization creates a supermassive black hole with an electric charge such that the radius of its inner horizon is 3/4 the radius of its outer horizon. In nature, a black hole with this much el...

1 answer  ·  posted 6y ago by Anders Gustafson‭  ·  last activity 6y ago by Anders Gustafson‭

Question reality-check magnetism black-holes engineering electromagnetism