Stephen Hawking explains one of the greatest mysteries of the Universe
science·@miguelang357·
0.000 HBDStephen Hawking explains one of the greatest mysteries of the Universe
<html> <p>In a conversation with prominent astrophysicist Neil deGrasse Tyson, the British physicist said what was in the cosmos before the Big Bang.<br> <br> <img src="https://rec-end.elnuevodia.com/images/tn/0/19/1200/616/900/447/2018/03/08/stephenhawking.jpg" width="900" height="447"/><br> <br> Hawking explains that this imaginary time is a curved surface like Earth, but with two extra dimensions. (AP)</p> <p>The study of the Universe has always started with the Big Bang, this great explosion that occurred 13.7 billion years ago, and that gave birth to the stars and planets that continue to form.</p> <p>However, a big question that has long persecuted theorists is what was there before this event?</p> <p>To find an answer to this, the astrophysicist and face of "Cosmos", Neil deGrasse Tyson, spoke with the theoretical physicist Stephen Hawking on the subject, taking a categorical solution: "There was nothing".</p> <p>"According to Einstein's General Theory of Relativity, time and space together form a continuity that is not flat, but curved by the energy and matter it contains," explains the British physicist, adding that, having adopted a Euclidean approach to quantum gravity, in which it replaces the "normal time for imaginary time, which behaves as a fourth direction of space".</p> <p>With this proposal, Hawking explains that this imaginary time is a curved surface like the Earth, but with two extra dimensions.</p> <p>Something that together with James Hartle, an American physicist, have posed a scenario "without limits", which allows to speak of "an endless closed surface, like the surface of the Earth".</p> <p>In this way, the author of "Brief history of time" ensures that a relationship can be made in which the beginning of time is like the South Pole on the planet, a place where the laws of physics are concentrated, and as well as " there is nothing further south of the South Pole, there was nothing before the Big Bang. "</p> </html>