Black holes don't exist, at least according to mathematical calculations done by a physics professor, Laura Mersini-Houghton, at the University of North Carolina at Chapel Hill. Black holes have long been one of the greatest mysteries of the Universe, so, obviously, Mersini-Houghton's statement that they don't exist has caused much controversy. However, the concept of black holes is more complicated when looked at from a math and physics point of view. Most of us think of black holes as stars that collapse in massive explosions, which causes them to become smaller and denser. Mersini-Houghton isn't questioning the existence of that. What she is questioning, however, are what properties black holes are attributed with, such as a singularity within the star's explosion that creates the event horizon. An event horizon is a point so strong that nothing can escape the pull of the black hole, once something goes into a black hole, it disappears. The two leading theories about the Universe contradict this, though. Albert Einstein's theory of gravity predicts that black holes can form, but his law of quantum theory says that nothing from the Universe can ever disappear. So how can both theories be correct? The only way to combine the two is by stating that some properties that we associate with black holes don't exist, meaning that black holes, as scientists know them, are impossible. "I'm still not over the shock," says Mersini-Houghton. "We've been studying this problem for a more than 50 years and this solution gives us a lot to think about." via Tech Times.