Why do only giant stars form black holes?

Thermonuclear fusion cannot create elements heavier than iron. Only a supernova explosion can create copper, silver, gold, and the “trace elements” that are important for the processes of life as we know it. Stellar black holes form when the center of a very massive star collapses in upon itself. read more

Well, in order to understand why only massive stars form black holes, we need to understand what a black hole is. A black hole is a region in space where the escape velocity is larger than the speed of light. If a photon crosses the event horizon of a black hole, because of the definition above, it can't escape. read more

Primordial Creation - In theory, the current epoch of the universe these high densities are only found in stars, but in the early universe shortly after the big bang densities were much greater, possibly allowing for the creation of black holes. read more