Our galaxy alone is estimated to have anywhere from 10 million to 1 billion black holes. The vast majority are not doing much, however, as there is no material form them to pull in.
They will remain as black holes for a long, long time.
Black holes. They can be so large that they can suck up universes at a time
No one will know for a long time. We know of some, but not all.
Black holes do distort time. The closer you get to the event horizon of a black hole, the slower time goes. From the perspective of someone outside, time at the event horizon stops.
At any time.
Black holes were stars that were so massive that they collapsed on itself. The gravity in black holes is infinite and more you get closer to it, more time gets slower. Black holes suck all matter that is too close. Even light can't escape Black holes.
Science at this time can find no end to black holes. They seem to last forever.
Can black holes alter time? Probably... I mean a black hole interfears with time and space... maybe... just maybe.... we could go either to the future or back to the... past.
Stephen Hawking began studying black holes while writing his doctoral thesis in the early 1960s. It wasn't until 1974 that he made groundbreaking contributions to the field with his discovery of Hawking radiation, which revolutionized our understanding of black holes.
Dead stars are not necessarily black holes. Dead stars can become white dwarfs, neutron stars, or black holes depending on their mass. Only the most massive dead stars can collapse further to become black holes if they exceed the Chandrasekhar limit, around 1.4 times the mass of the Sun.
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 grow by consuming matter and merging with other black holes. Factors that contribute to their expansion over time include the amount of surrounding matter, the gravitational pull of nearby objects, and the rate at which they consume material.