What if there was never any big bang and the universe has just always existed? That's the theory posed by two astrophysicists whose theory compliments Einstein's theory of general relativity and also explains dark matter.
Essentially it suggests that the universe is drastically different than how we perceive it today and, in fact, there was never a big bang 13.8 billion years ago.
Dr. Ahmed Farag Ali and Professor Saurya Das have come up with a series of equations that suggest there is no beginning or end.
Of course, the theory is hotly debated and it does pose significant challenges to physicists. Still, in the coming decades, more research and data on this may reveal some incredible surprises.