black holes can be formed in a supernova explosion if the mass of the star is large
enough
usually they are created when a massive and dense star like a neutron star collapses
Black holes are round because they are formed from dead stars and white holes. As you can guess a star is a sphere and that is why black holes are round.
No. Earth was formed by the accretion of material in the protoplanetary disk around the newly formed sun. Black holes were not involved.
black holes and neutron stars
Because they formed from stars, which are in space.
Quasars are thought to be distant super-massive black holes.
Black holes are formed when a big star explodes into a supernova (massive explosion) and the core collapses completely. The explosion carries on until the star forms a singularity (a dense point in which mass can be stuffed in), eventually inside a black hole.
It's generally believed that galaxies first formed around "ordinary" black holes and over time, they grew into super massive black holes as stars were slowly "consumed" by the black hole.
Black holes are black holes - they are totally different from anything else in the universe. Most black holes are formed from the collapsed cores of dead stars. There are supermassive black holes in most galaxies, but it is no known how they formed.
The Large Hadron Collider in CERN
The black holes found in space? No. An underwater volcano or a split in the seafloor can leak magma into the ocean causing it to instantly cool. This is one way islands are formed. So the volcanic stone may be black, but they are not referred to as black holes.
Only in that they where formed by the same process. A neutron star formed from a star with less mass than a black hole
I think they are black because I saw a nonfiction movie about black holes and the pix from a sattelite showed them black. they either have no color or we can't see what color it is, because black holes suck in light, and anything else within a certain distance. a black hole is formed when a star combusts and its gravity absorbs itself and anything else.