THE BIG BANG
THE BIG BANG The Big Bang Theory is a scientific theory that describes the origin and evolution of the universe. According to this theory, the universe began as a singularity—a point of infinite density and temperature—approximately 13.8 billion years ago. This singularity then underwent a rapid expansion, known as the Big Bang, and has been expanding ever since. The theory suggests that in the early moments of the universe, it was extremely hot and dense, and as it expanded, it cooled down. As the universe cooled, elementary particles formed, eventually combining to create atoms, stars, galaxies, and other cosmic structures. The Big Bang Theory is supported by various lines of evidence, including the observed redshift of distant galaxies, the cosmic microwave background radiation, and the abund...