Cyclic Universes

The Cyclic Universe theory proposes an endless sequence of universes forming, expanding, and collapsing in repeated cycles. Unlike the traditional Big Bang model, this theory suggests our universe is just one in an infinite series, with each cycle beginning with a new "bang" after the previous universe contracts. Inspired by concepts from string theory and quantum gravity, it offers an alternative to cosmic inflation while potentially explaining the universe's low entropy state. Some versions propose colliding "brane worlds" trigger each new cycle. This elegant solution to the ultimate fate of the cosmos remains speculative but continues to influence cosmological research.