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Re: Black Holes For Time Travel?

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Posted by Zephram Cochrane/">Zephram Cochrane on September 26, 1999 03:58:42 UTC

It has been shown that if either the electric charge in distance units or the specific angular momentum is greater than the mass of the hole in distance units that closed time-like loops will form around the hole. It is not thought that this kind of hole will form under a normal gravitational collapse process, but if it did happen then once such a hole is found it could be used to time travel as far back as this formation occurred. This would not require a sling shot scheme to escape the hole, because of the gravitational repulsion that exists in a hole with charge or spin.

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