Explain the Big Bang explosion.The bright spot on the left is the moment of the explosion, causing the universe to expand in space over the past 13.7 billion years - and this is the estimated age of the universe - (Photo: NASA).
But a few months ago, the trio of physicists Anna Ijjas, Paul J. Steinhardt, and Abraham Loeb published an article opposing the theory of the expanding universe as well as the Big Bang that gave birth to the universe. causing intense controversy in the space of the cosmic science. Many people believe that this is the reason Hawking published his thesis.
According to these three scientists, the current universe must be interpreted according to "Big Bounce", ie "a big turn / recovery".
Accordingly, the universe operates cyclically, not just the beginning and explosion forever. That is, when cosmic energy is depleted, it will become extremely hot and extremely solid, concentrated (return to its original state) and then again an explosion or subsequent event to expand.
Description of Big Bounce.The universe will narrow down to the hottest point, then perform "recovery jump" to expand.
Source: https://www.repository.cam.ac.uk/handle/1810/251038