Mysteriousness of black holes has always thrilled astrophysicists. Black holes are massive objects in space that have a gravitational pull so strong that even light cannot escape.
There is always an ongoing debate on what actually happens inside a black hole. At KTH Royal Institute of Technology in Stockholm, renowned physicist Stephen Hawking explained his latest idea about what happens to any kind of quantum-mechanical information if it falls inside a black hole.
Black hole information paradox is a dispute between Einstein’s General theory of Relativity and Quantum mechanics. According to relativity, the information that once falls inside a black hole is gone forever and can never be restored but according to the laws of Quantum mechanics, any kind of information can never be destroyed and is retrievable.
According to Stephen Hawking, Quantum mechanics win this battle because whatever falls inside a black hole can be retrieved as it never actually makes it inside. The information in a black hole is never stored in its interior as one might expect but on its spherical boundary called the event horizon. Event horizon is a boundary in space-time beyond which the gravitational pull becomes so strong that the escape is impossible. It is a point of no return.
If the information is not destroyed, where does it go? Is it retrievable?
There is a possibility that information that seems to be lost in a black hole can be retrieved in alternate universes. The hole would need to be large enough and if it is rotating, it might have a passage to another universe. This means that there is a way out of black holes. The matter that a black hole attracts gushes out of a white hole in an alternate universe.