The pressure within a protostar counters gravity and prevents the star from collapsing further.
The mass of the progenitor star has to be massive to form a black hole and thus it will have a shorter time on the main sequence compared to a medium sized star.
sadly from what i have seen it doesnt but i hope it does soon
They will merge to form a single black hole with the combined mass of the town that merged.
The sun's energy has not formed a black hole.
No, one cubic light year of water would not form a black hole because the mass of the water would not be dense enough to collapse into a black hole. The density of water is much lower than what is required for a black hole to form.
A black hole is formed when a star or other large body collapses on itself.
black hole
A high mass protostar will eventually evolve into a massive star like a red supergiant, followed by a supernova explosion. After the supernova event, the remnants may form a neutron star or a black hole.
they trun into a black hole
No
There aree black wholess formedd in spacee alreadyy.
Particles falling into a black hole release a large amount of x-rays as they do so. This is not energy from the black hole itself, but energy release that is a sign of a black hole.