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The chronology protection conjecture is a hypothesis first proposed by Stephen Hawking that laws of physics beyond those of standard general relativity prevent time travel—even when the latter theory states that it should be possible (such as in scenarios where faster than light travel is allowed).
According to John Horgan, science journalist writing for The Wall Street Journal, Hawking, in his book, prefers string theory as a way of explaining the "theory of everything" (which Hawking predicts to be solved by "the end of this century") and, based on quantum mechanics, considers empty space as filled with virtual particles, "popping into ...
Stephen William Hawking (8 January 1942 – 14 March 2018) ... and the theoretical prediction that black holes emit radiation, often called Hawking radiation ...
Hawking radiation is black body radiation released outside a black hole's event horizon due to quantum effects according to a model developed by Stephen Hawking in 1974. [1] The radiation was not predicted by previous models which assumed that once electromagnetic radiation is inside the event horizon, it cannot escape.
Stephen Hawking's purported solution to the black hole unitarity paradox. Hawking and unitarity: a July 2005 discussion of the information loss paradox and Stephen Hawking's role in it; The Hawking Paradox - BBC Horizon documentary (2005) "Horizon" The Hawking Paradox at IMDb A Black Hole Mystery Wrapped in a Firewall Paradox
Stephen Hawking was originally a believer in the Theory of Everything, but after considering Gödel's Theorem, he concluded that one was not obtainable. "Some people will be very disappointed if there is not an ultimate theory that can be formulated as a finite number of principles.
The Hawking singularity theorem is based on the Penrose theorem and it is interpreted as a gravitational singularity in the Big Bang situation. Penrose shared half of the Nobel Prize in Physics in 2020 "for the discovery that black hole formation is a robust prediction of the general theory of relativity".
In 2018 the late Stephen Hawking and Thomas Hertog published a paper in which the need for an infinite multiverse vanishes as Hawking says their theory gives universes which are "reasonably smooth and globally finite". [22] [23] The theory uses the holographic principle to define an 'exit plane' from the timeless state of eternal inflation.