Science; Exsistance of Black holes

In science, our task after the text was to chose from a variety of ideas from a slide show shown to us.  I've finally decided to do it on Blackholes about their main branching of facts and theories.

A black hole forms from the center of a great fallen star collapsing up upon itself. When it collapses it creates a huge supernova or a and exploding star which blasts part of the star into space.
The names, ''no point of no return', is the area and region around the black hole called the event horizon. This is the area where the gravity around the black hole pulls all material into the Blackhole, as it spins around it like a whirlpool until reaching the center.

A black hole is an area or so to say the region of space from which nothing can escape from its wraith when you enter its gravity pull there's no chance of escaping. Apparently to the general theory of relativity, it is the result of manipulating of curving spacetime caused by a huge mass. Around a black hole, there is an entry with no return called the event horizon. The opposite of a Wormhole, that allow you to travel somewhere random and with a chance of return.

Black holes do not create radiation on their own, there are detected by radiation given off by material that is heated in the accretion disk and also by the black holes gravitational pull. Or by even light passing by.

(These facts and theories that are combined throughout these paragraphs maybe not be 100 percent true...)