Black Holes

Black holes are born when a massive star explodes, then forms a supernova. A fact about black holes is that they evaporate over time. Astronomers used to believe that black holes were impossible to destroy. We do not know what is inside of black holes. There are three types of black holes. One type is called a stellar-mass black hole. This type of black hole is heavier than the sun. Also, there are supermassive black holes. These black holes are about as heavy as a small galaxy. Another type of back hole is said to exist with a mass between stellar-mass and supermassive holes. My favorite type of black hole is the supermassive black hole. It is amazing to me that it has the mass of a small galaxy! Astronomers are researching the theory that black holes spin. They believe this because the things that black holes are made of spin, so the black hole as a whole, should spin. Another misconception is that black holes are possibly electrically charged. These are questions that Astronomers are trying to find a solution to.

http://hubblesite.org/explore_astronomy/black_holes/encyc_mod3_q4.html
Roeland van der Marel, STScI