Because sometimes when a star dies, its gravity is so strong it collapses in on itself. This, in essence, is how a black hole is formed.
In space mostly around groups of old stars
There are two ways blackholes form:Massive blackholes - these are formed by collapse of stars having more than 3 times the mass of our sun, when the stars die.Micro blackholes - these could have only formed in the big bang. Their event horizons are roughly the size of a proton and their mass is similar to that of a mountain. Unlike massive blackholes, which last forever, these evaporate then explode giving them a limited lifetime.
We would need to know the language to answer.
They are either other solar systems, nebulas (Dead solar systems) Blackholes, other galaxies or stars that have no orbits
No
If blackholes reach the earth the earth will destroy. Blackhole are to large it can eat star easily.
Stephen Hawking is currently researching the origins of blackholes and the effects of blackholes on the matter surrounding it.
Albert Einstein.
It has both. Hope this helped, WoodWorkingMaster
The supermassive blackholes at the center of galaxies.
yes they as scientists found in the middle of the messier galaxy
Sufficiently large gravitational bodies... blackholes are the most common.