Friday, October 12, 2012
Black Holes
Hello there and welcome back to topics in theoretical physics today I am going to be talking about black holes, and their structure and relation to the universe, and other celestial objects. Black holes are formed by the gravitational collapse of stars. This happens because the star exhausts all of it's energy. Then it collapses back into itself, and becomes a black hole. The gravitational pull of black holes are so strong that not even light can escape it if an object crosses the event horizon of a black hole there is no known way for it to come back it will move closer, and closer to the black hole until it is pulled in the. When objects are pulled into a black hole they undergo a process called spaghettification also called the noodle effect because the gravitational pull from the black hole is so strong that it rips, and pulls matter into noodle like strands. Then once inside the black hole the matter is compressed to infinite density in the gravitational singularity. This region is where the laws of physics breaks down, and time and space are stretched to the breaking point. No one has ever observed the gravitational singularity, and the conditions there are completely unknown, and left to speculation. Some theories about black holes, and their relation to the universe and other celestial objects is that some theories posit that the matter pulled into the black holes actually comes out in a white hole which is a hypothetical region of space where matter, and light cannot enter, but can leave which makes it the opposite of a black hole. When the matter comes here some theories posit that the matter that was compressed in the singularity to infinite density has fluctuations to where another big bang occurs, and therefore another universe created. Then another theory states that the matter pulled into a black hole does not go out of existence instead it posits that matter is composed of information, and that information is stored across the surface of the black hole instead of that information going out of existence. This concludes todays discussion on black holes.
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