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Are Black Holes Eternal?

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Posted by Grayden on August 20, 2001 21:57:38 UTC

Most people seem to assume that once a black hole is created it remains forever, with little in the way of change. Since, however, a black hole is continually accumulating mass, I was wondering if it would eventually reach some crucial point when its basic structure or features might change somehow. Or would it simply continue to expand, offering a magnetic centre to star systems (globular clusters perhaps), then galaxies, then galactic clusters, etc. Is there a limit to a black hole's size or its lifespan?

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