Astrophysicist Hugh Ross of the Christian apologetics group Reasons to Believe has taken issue with the claim of notable British theoretical physicist Stephen Hawking that nothing existed before the Big Bang. According to Einstein's General Theory of Relativity, space and time together form a space-time continuum or manifold, which is not flat, but curved by the matter and energy in it.
Meanwhile, the Hartle-Hawking state that was referred to in the interview is a proposal from the legendary physicist and James Hartle, an American physicist, that infers that there was no time before the big bang.
Professor Hawking once again mentioned the dangers humanity faces with the development of artificial intelligence and the need to find a new planet for the continuation of the human species.
He added that one can regard imaginary and normal space-time as beginning at Earth's south pole - a point where the normal laws of physics hold.
The Big Bang Theory is one of the most popular and most logical explanations of how the universe started to exist.
Mr Tyson asked: "What was around before the big bang?".
Hawking proposed a simple and direct answer. This means that the state of the universe, after the Big Bang, will not depend on anything that may have happened before, because the deterministic laws that govern the universe will break down in the Big Bang.
Physicist Stephen Hawking sits on stage during an announcement of the Breakthrough Starshot initiative with investor Yuri Milner in NY. And he says that given our current observation, this condition also applies to the Euclidean space-time four-dimensional curve involving imaginary time. "It just seemed that way from mankind's perspective", Hawking said. "There was nothing south of the South Pole so there was nothing around before the big bang", Hawking explained.
According to Hawking, before the Big Bang, the universe was shrunk and condensed to an incredibly dense ball of heat and energy the size of a single atom.
He also talked about the concept of no boundary condition to elaborate more clearly about his opinion on the origin of the universe. "As you move back in time, for you, the universe shrinks".
The National Geographic "Star Talk" will air on March 4 starring Neil De Grassi as host and physicist Stephen Hawking as a guest at 11:00 P.M.