: i need to get some hot information on blackholes for a sciencefair project.can you guys give me some info

Black holes are really not holes at all. They could be described as a ball of mass in space that formed when a very big star explodes and the remnants collapes into the center. A White dwarf star, dwarfs are the most dense of any star, is so dense that a teaspoon of the matter that makes it up would weigh several million pounds. One teaspoon of a neutron star, even more dense, and smaller in size would weigh trillions of pounds. The some kind of explosions that cause neutron stars cause black holes, just bigger explosions. the matter that is remaining is so dense that not even light can escape so it appears invisible, or black. When a black hole absorbs matter, it starts to spin in an orbit around the matter, like a whirl pool. the matter spinning around the "hole" heats up and begins emmiting X-Rays. Several places in our universe have been detected that have alot of extra X-ray radiation being emitted. Also, if a black hole was occolting a star, it would not appear as a black dot on the surface of the star, the gravitational force of the black hole causes light to bend around it, and just showing the star as if the black hole wasnt there.