Black hole - the area in the space, which arose as a result of the complete gravitational collapse of matter in which the gravitational pull is so great that no substance, no light, no other media can not leave it. Therefore, the inside of the black hole are not causally connected to the rest of the universe, occurring inside the black hole physical processes can influence the processes outside of it. A black hole is surrounded by a surface with the property unidirectional membrane: matter and radiation falls freely through it into a black hole, but from there nothing can get out. This surface is called the "event horizon." ... If you get more information, visit our site: BEST ESSAY CHEAP
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