« on: 13/03/2016 20:22:29 »
Quote from: Jeffrey
I have seen it stated that since the gravitational field has energy it can produce gravity just like mass does. Is this necessarily true?
My understanding is that GR says that gravity creates gravity. I've been looking for where I got this idea and can't find at the moment. It has come up in discussion on other forums, and seems to be accepted widely.
An interesting point that arises from it must be: Why do we not observe run-away gravity? Why doesn't every massive body spontaneously collapse into a black hole?
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