"Nothing was around before the big, 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".
The answer to Hawking's question "What was before the big Bang" is based on a theory known as the "unlimited offer", or the Model of Hartl-Hawking, that famous physicists James hartle and Stephen Hawking have proposed several decades ago.
Now, the British physicist says, that there was nothing around before the Big Bang.
Professor Hawking then explains that the best way to picture this reality is by thinking of imaginary time and real time beginning at our Earth's South Pole.
The Big Bang theory is the possibility that the whole universe started as a pinprick that has been growing from that point onward-basically, that the main reason the universe feels so huge is on the grounds that it's had 13.8 billion years to arrive in such a state. Hawking's work on the origins and structure of the universe, from the Big Bang to black holes, has revolutionized the field, Space.com wrote. However, regardless of how complicated a question like where did it all come from, there can always be a very "simple answer" like "Nothing simple as that". This means that the Universe, according to Hawking, has no boundaries.
"It just seemed that way from mankind's perspective", Hawking noted, hinting that a lot of what we believe is derived from a human-centric perspective, which might limit the scope of human knowledge of the world.
What proves Hawking's approach as outstanding is the fact that Einstein's general relativity theory proved that geometry of space and time can not be Euclidean, conceiving space-time continuum as a literal timeline.
"Ordinary real time is replaced by imaginary time", he said. But, he said that that didn't there before Big Bang event, it began after the Big Bang when the Universe started expanding.
Hawking was seated next to host Neil deGrasse Tyson at the Star Talk show, explaining his thought on events before the Big Bang.
Einstein famously said that asking what existed before the Big Bang was akin to asking what's north of the North Pole. What's more, the boundary condition of the universe (the known and constraint value that must be true for the problem that you are working)... is that it has no boundary.
If we were to move back in time from the Big Bang, the "arrow" of time shrinks infinitely as the universe becomes smaller, never reaching a clear starting point.