Some structures in the universe may be better explained by a Big Bounce rather than a Big Bang. To account for observations, the Big Bang theory says time once did not exist and the known universe once expanded faster than the speed of light in an event called inflation.
The concept of the Big Bounce envisions the Big Bang as the beginning of a period of expansion that followed a period of contraction. In this view, one could talk of a Big Crunch followed by a Big Bang, or more simply, a Big Bounce. This suggests that we could be living at any point in an infinite sequence of universes, or conversely the current universe could be the very first iteration. …
The Big Bounce Models, however do not explain much about that how the currently expanding universe will manage to contract. …
My intuition to explain the mystery of the Big Bounce is that the universe is currently expanding at an ever increasing rate because the edge of the universe bubble, which seems infinitely huge, is actually a warp of a single supermassive point. If you go far enough out, you will be everywhere at once. In other words, gravity is making the universe accelerate apart, but due to warped space on a grand scale, the universe is actually also accelerating together, into a point that will become another Big Bang. There is a great implosion event horizon at the edge. This explains everything. I just need to get some formulas together to claim my Nobel Prize. I’ve never heard anyone have this idea, so I keep mentioning here it in hopes that someone with credentials in physics will discover it, do some math and find supporting evidence.