The Big Bang theory

The Big Bang theory is the prevailing explanation for the origin and evolution of the universe, but understanding its intricacies requires a deeper dive. Describe the Big Bang theory, including the early stages of cosmic inflation and the subsequent expansion of the universe. Discuss the evidence supporting the Big Bang, such as the cosmic microwave background radiation and the abundance of light elements. Furthermore, explore the current state of the universe, including the accelerating expansion driven by dark energy, and the fate of the cosmos according to different cosmological models.