thanks. so stars don't collide into each other because they move fast enough / have enough kinetic energy to partially defy gravity? they have enough energy to stay away from each other but they don't have enough energy to completely get out of each other's gravitational field, so they just...
are black holes just dead stars with lots of mass which shrunk to small size and got lots of gravity, or an actual hole in space-time? if they're actually holes, where do they lead stuff that gets in them? if they're just dead stars with lots of gravity, their mass must grow over time because of...