Technically, there is no such thing as a black star. There is however:
See related questions for an answer on each.
no black holes are stars
All dead big stars do not form black holes because sometimes the collapse of the star is stopped at a smaller size before it becomes a black hole.
stellar black holes were stars (these are large)primordial black holes were pieces of the big bang (these are microscopic)
Black holes came from old big stars that went supernova as it dies. Supernova causes the star to collapse into a black hole
Massive, big, and very luminous stars turn into black holes most of the time
The universe is not black. The universe as a whole is microwave, at a cavity radiation temperature of about 3 K. The space between stars just looks black because you can't see microwave.
The first population III stars formed about 400 million years after the big bang. The first black holes would have formed when these stars exploded, about a few millions years later.See related link for a timeline of the big bang.
Not all stars do but stars can turn into black holes. Small ones turn in to a black dwarf star when it dies. Medium ones turn in to a neutron then in to a red giant star and then to white dwarf star Large size stars becomes a blackhole..........
If a black hole "sucked" in all the surroundings (The Universe) then it would be the term "Big Crunch" where all matter is returned to the state prior to the Big Bang.
Hard to explain. Usually stars get bigger if they grow. Very large stars have shorter life. A very big star can end it's life as a super nova or a black hole.
Hard to explain. Usually stars get bigger if they grow. Very large stars have shorter life. A very big star can end it's life as a super nova or a black hole.
Some stars become a black hole or a black dwarf.