I've been studying up on physics, and a question occured to me. According to the Theory of Relativity, the faster objects go, the more mass they have. Now, if we have a stellar object (a star for instance) moving towards the speed of light, at some point , would it have gained enough mass that gravity pulls it into a black hole? Also, what will happen if it stops moving suddenly after that point? Will it continue to be a black hole or will it have contracted itself enough that it stays that way? Personally, I think it IS possible for it to become a black hole like this, and that if it stopped moving, magnetic fields would push the thing apart, with the loss of major gravity due to loss mass, but i'm not an expert on this stuff, so I would like you're opinion. What do you guys think?