Stephen Hawking says there was absolutely nothing before the Big Bang

Stephen Hawking says there was absolutely nothing before the Big Bang

"In order terms, the Euclidian space-time is a closed surface without end, like the surface of the Earth", Hawking stated on the show. This is when ordinary time is replaced by imaginary with a fourth direction of space, in which the only boundary is a "no-boundary condition".

To visualise this, imagine a horizontal line with past running to the left and future to the right.

In a new episode of Star Talk, the famous British physicist Stephen Hawking spoke with host Neil deGrasse Tyson to talk about what existed before Big Bang, this conceptual line only "visible" by calculation, which is impossible to cross. According to Hawking, there is no boundary of the universe.

Hawking believes that at the Big Bang, which took place 13.8 billion years ago, the time itself emerged. Some of the most strident opposition to this theory comes not from other scientists but from theologists and lay-believers who pose the question (not necessarily in as many words): "If there was something that exploded during the Big Bang, where did that something come from?" "It just seemed that way from mankind's perspective", Hawking said.

"Not just Hawking's model but all cosmological models seeking to avoid the need for a transcendent Causal Agent for the universe (aka God) require that the quantum space-time fluctuations during the quantum gravity era (the era when the universe is smaller than the diameter of an electron) must be large", explained Ross.

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In Hawking's view, before the Big Bang, there existed simply nothing, but not in the conventional sense. Since there is no concrete evidence about what was around "nothing" where nothing is actually something that was there before the Big Bang.

"In the Euclidian approach, the history of the universe in imaginary time is a four-dimensional curved surface like the surface of the Earth but with two more dimensions", he added.

Hawking uses the concept of Euclidean space-time to describe his theory.

"One can regard imaginary and real time as beginning at the South Pole, which is a smooth point of space-time where the normal laws of physics hold".

'There is nothing south of the South Pole, so there was nothing around before the Big Bang, ' he said. Instead, time and space extend from this singular point in time, like the degrees of latitude on the planet Earth. But, he said that that didn't there before Big Bang event, it began after the Big Bang when the Universe started expanding.

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