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DHF
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I have been fascinated by stars and Black holes for most of my life but one of the things I can't get a satisfactory explanation on is what gives a Black Hole it's mind boggling gravity. We know that a Black Hole cannot be seen because it's gravity is so great that not even light can escape it but if it is formed from a massive star, wouldn't it have a mass equal to that star (if not less if some of the mass was lost during the collapse) so why would its gravity change? Or am I chasing a red herring because this would be the part where the physics break down?
Don
Don