The Big Bang theory is the prevailing scientific explanation for the origin and evolution of the universe. It suggests that the universe began as an extremely hot and dense point known as a singularity. About 13.8 billion years ago, this singularity rapidly expanded, creating space, time, and all matter and energy. As the universe expanded, it cooled down, allowing atoms to form, and eventually leading to the birth of stars, galaxies, and other celestial objects. The Big Bang theory also accounts for the observed expansion of the universe, as suggested by Edwin Hubble's discovery of galaxies moving away from us. Overall, the theory provides a coherent explanation for the cosmic microwave background radiation, the abundance of light elements, and other observational evidence.
