It happens when a star 8 times bigger than the sun(if the star is bigger it uses up more fuel/hydrogen)starts to run out of fuel and turns helium into heavier elements and when it finally reaches iron it collapses and turn into a neutron star, then a black hole.
No. Most black holes form when an extremely massive star dies and the core collapses, becoming a black hole.
It is not known how many black holes exist. One of the main reasons is that, if matter is not actually falling into the black hole, it is impossible to detect.
if two black holes collide, they swallow eachother making one giant blackhole
most likely in a long time but scientist are detecting black holes coming closer to earth.
It is known what will happen. You will get sucked up! But before you get sucked up, Black Holes give flicker of black hot gas. Black Holes have so much power that they can't control it. So that's why they suck up everything in their path. Fun Fact: Black Holes are actually stars that died and contain so much power!!
It would emit a lot of radiation. Some distant black holes (or more accurately, the area around the black holes) emit more radiation than an entire galaxy. Such black holes are known as quasars.
While we have never actually proven that this does happen, we're fairly certain that when two black holes get close enough together, they will merge and form one even larger black hole.
Black holes are hidden behind an even horizon we do not know what happen in side them.
The nearest know black hole is at a distance of several thousand light-years. There are probably black holes closer by, but they are hard to detect, if they don't happen to be part of a close binary star system.The nearest know black hole is at a distance of several thousand light-years. There are probably black holes closer by, but they are hard to detect, if they don't happen to be part of a close binary star system.The nearest know black hole is at a distance of several thousand light-years. There are probably black holes closer by, but they are hard to detect, if they don't happen to be part of a close binary star system.The nearest know black hole is at a distance of several thousand light-years. There are probably black holes closer by, but they are hard to detect, if they don't happen to be part of a close binary star system.
You would have a black hole the size of the combined mass of the two black holes.
That's what the mathematical theories suggest would happen. We have never observed this, and with any luck we never will be close enough to see this. Black holes are dangerous places.
stellar black holes were stars (these are large)primordial black holes were pieces of the big bang (these are microscopic)