Thanks to astronomical observations obtained with various instruments, we know that the universe is expanding. Following this premise, going back in time, it would mean that all the matter and energy contained in the cosmos would be concentrated in a single point.
As the Spanish Astronomy Society (SEA) explains from scientific observations, “it follows that the early universe was in a state of enormous densities and temperatures. If we go back to the earliest epoch that current science is able to study, then we find the cosmos in the primordial state that corresponds to the Big Bang or Big Bang.
Thus, the universe would have been formed around 14,000 million years ago and the radiation and matter that made up the universe were confined to a tiny region of space-time under extreme physical conditions that were impossible to reproduce.
In any case, as David Galadí-Enríquez, from the SEA explains, it is “ more appropriate to understand the Big Bang as a primitive stage or epoch in the evolution of the cosmos, and not so much as a specific specific event located in space and in time".
