Part 5/10:
One of the prominent theories suggests a cyclic model, proposing that the Big Bang is merely the latest of many cosmic beginnings within an infinite series of expansions and contractions. In this framework, the universe initiates from a minuscule singular state, expands over billions of years, and eventually contracts back into a singularity, only to repeat the process. This endless cycle implies that time possesses infinite duration and potential for the future.