>>13568815>https://study.com/academy/lesson/evidence-for-the-big-bang-theory-background-radiation-red-shift-and-expansion.html>still a theoryBillions of years ago - more than 14 billion years - there was nothing: no matter, no energy, no space. Scientists needed a way to explain how everything began, where it came from, what happened. Although there are several different theories about the origins of the universe, the Big Bang theory is the prevalent one because no other model is as good at explaining everything in the universe. The Big Bang theory isn't perfect, but it's the best we've got.
>believeScientists believe our universe comes from a singularity. Scientists don't actually know where this singularity came from or exactly what it is, but they do know that a singularity is an infinitely small, hot area of infinite pressure and density. These singularities defy our known laws of physics because they didn't appear in space. Rather, space began inside them. Before the singularity, nothing existed. There was no space, no time, no matter, no energy.
