Big Bang (cosmology)
The Big Bang theory is the leading explanation for the origin and evolution of the universe, proposing that it began as an infinitely hot and dense point around 13.8 billion years ago and has been expanding and cooling ever since. This concept is closely related to Space (astronomy), Conservation of energy, and Timescales (biology). The theory was first proposed by Georges Lemaitre and later supported by a wealth of observational evidence, including the cosmic microwave background radiation and the abundance of light elements. The Big Bang theory has been instrumental in our understanding of the universe, from the formation of Fossil records to the distribution of Galaxy clusters. It has also led to a deeper understanding of Complexity (mathematics), Direction (geometry), and the fundamental laws of physics that govern the universe.