Quote from: misquote
What is a black hole formed from?Most of the black holes formed today come from the collapse of the core of a star.
- The temperature of a star is so high that electrons are separated from the nucleus of an atom, forming a plasma
- Since electrons & nuclei are "sub-atomic", you could say that black holes are formed from sub-atomic particles.
- As the core of the star collapses, many of the protons and electrons are converted to neutrons (a sub-atomic particle), releasing a burst of neutrinos (which mostly escape). I vaguely recall that around 90% of the energy released in a supernova is in the form of neutrinos.
There is some speculation from cosmologists that, during the early stages of the Big Bang, some black holes may have formed even before protons, electrons and neutrons were formed. Atoms can't exist at these extreme energy levels, so you might call these "pre-atomic" particles(?)
- Cosmologists think that some of these relic black holes may still exist today
black holes might be viewed not as objects at all but as extreme spacetime curvatureOnce a black hole has formed, the extreme curvature of spacetime effectively pinches off the singularity from the view of those outside the event horizon.
- At this stage, the only thing you know about the black hole is its mass, spin, and electrical charge.
- At this point, it really doesn't matter what the black hole formed from, because that is not detectable from outside.