"What's the missing word in this paraphrase of Stephen Hawking's statement that the universe has not existed forever? ""It's true because if it were not, all things would be the same ___."""
Gibbons–Hawking effect Gibbons–Hawking effect The Gibbons–Hawking effect is the statement that a temperature can be associated to each solution of the Einstein field equations that contains a causal horizon. It is named after Gary Gibbons and Stephen Hawking. The term "causal horizon" does not necessarily refer to event horizons only, but could also stand for the horizon of the visible universe, for instance. For example, Schwarzschild spacetime contains an event horizon and so can be associated a temperature. In the case of Schwarzschild spacetime this is the temperature formula_1 of a black hole of mass formula_2, satisfying formula_3 (see also Hawking radiation).
Into the Universe with Stephen Hawking Into the Universe with Stephen Hawking Into the Universe with Stephen Hawking is a 2010 science documentary television mini-series written by British physicist Stephen Hawking. The series was created for Discovery Channel by Darlow Smithson Productions and features computer generated imagery of the universe created by Red Vision. The series premiered on 25 April 2010 in the United States and started on 9 May 2010 in the United Kingdom with a modified title, Stephen Hawking's Universe (not to be confused with the 1997 PBS series by the same name). An original soundtrack was composed for the series by television and