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
After the black hole dies out, (see When do black holes die and/or How does a black hole get smaller) it will become just a vacuum.
most likely in a long time but scientist are detecting black holes coming closer to earth.
There are no "black stars" in space. There are black holes, but they don't really "mean" anything, they're just a thing that theory predicts can happen and observation suggests does seem to actually exist.
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!!
Not sure what you mean. M60 is a galaxy. Just about all galaxies have supermassive black holes in their center - and lots of smaller black holes. The supermassive black hole in M60 is estimated to have 4.5 billion solar masses - one of the largest known black holes.
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.
The density of matter just after the big bang is calculated to be sufficient to have spontaneously created black holes; such are called primordial black holes, and searches for their existence are ongoing.
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.
black holes The black hole we see is the Event Horizon. Its realy not a hole. Just a spherical region in space where matter ceases to exist.