History of the Big Bang theory

The Big Bang theory is the leading explanation for the origins of the universe, describing its expansion from an extremely hot and dense state. The history of this theory can be traced through several key developments: ### Early 20th Century 1. **Albert Einstein's General Relativity (1915):** - Einstein's theory revolutionized the understanding of gravity and space-time, leading to the formulation of models of the universe. His equations suggested that the universe could be dynamic rather than static.