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.
Yes. When the most massive stars die, their cores collapse to form black holes.
Most black holes are believed to form when very massive stars die.
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.
Yes. When the most massive stars die, their cores collapse to form black holes.
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.
Mostly in galaxies, where they can form Super Massive Black Holes.
False. Medium-sized stars become white dwarfs. Only the most massive stars form black holes.
Most black holes form when massive stars exhaust their fuel and their cores collapse. There are also supermassive black holes at the centers of most galaxies. Scientists are not sure how supermassive black holes form.
There are more white dwarfs. Only the most massive stars can form black holes. White dwarfs form from low to medium mass stars, which far outnumber the supermassive ones.
When a star dies, it can leave behind different types of stellar remnants depending on its mass. Some examples include white dwarfs, neutron stars, and black holes. White dwarfs are formed from the remnants of low to medium mass stars, neutron stars are formed from the remnants of massive stars, and black holes are formed from the remnants of the most massive stars.
Black holes are formed by super massive stars when they collapse. Less massive stars will form neutron stars. Therefore, the original size and mass of the star will determine if a black hole will be created when the star collapses.
No. Only the most massive stars form black holes. When the sun dies it will form a white dwarf.