Has the Big Bang Theory Been Challenged?

According to reports from "Live Science" and "Tech Times", a number of researchers have concluded that two major theories in physics, namely "quantum mechanics" in the realm of fundamental particles and "general relativity" in the universe of space and time, cannot be reconciled into a single theory. Surya Das, a theoretical physicist at the University of Lethbridge, Canada, Robert Brandenberger, a theoretical cosmologist at McGill University in Montreal, and Ahmad Faraj Ali from Benha University in Egypt are among the researchers who have questioned the Big Bang theory by presenting a new equation. According to their theory, the universe did not begin as an extremely compressed and dense point or particle and essentially had no beginning. This theory also posits that the laws of general relativity do not have meaning or function in the context of a single, highly dense and compressed particle at the beginning of the Big Bang theory. Radio Farda, in an interview with Amir Hajian, a cosmologist and senior researcher at the Institute of Astrophysics in Canada at the University of Toronto, asks whether the Big Bang theory has been called into question. Amir Hajian responds that no, the Big Bang theory has not been called into question; what has been done is a theoretical work that attempts to address the singularity present in our theory. As a theorist and scientist, it is not pleasant for us to have a singularity in our theory because a singularity means we really do not know what is happening there. They have tried to provide a theory that does not contain this singularity. Hajian explains that a singularity is a point where our theories break down, and if we look at the Big Bang theory, the universe has a certain size and density. If we reverse time and go back to the beginning of creation, everything is collapsing back because the universe is currently expanding. As we approach the beginning of the universe, the density increases to a point where we no longer have a theory for what came before it, as we reach energies for which we have not yet been able to provide an acceptable theory. This is where we think gravity and quantum theory must unify. Hajian notes that there have been many efforts to unify the theories of general relativity and quantum mechanics, but we have not yet succeeded in merging them. The Big Bang theory is also based on observation. When asked to summarize the current understanding of the universe, Hajian states that our current image of the universe is that it began very hot and dense and has been expanding ever since, with small fluctuations due to quantum events leading to the large cosmic structures we see today. The overall picture of cosmology is based on Einstein's theory of general relativity, starting with the Big Bang, and most of the universe consists of dark energy, followed by dark matter, with the matter we are familiar with making up less than four percent of the universe. Thus, we do not know exactly what most of the universe is made of, but we do know how much of it exists.