Which theory explains the beginning of the universe?

The Big Bang Theory is widely accepted as the explanation for the beginning of the universe. This theory proposes that the universe started from an extremely hot and dense state and has been expanding ever since. The concept was first formulated in the early 20th century and is supported by several lines of evidence, including the observed redshift of galaxies, which indicates that they are moving away from us, and the cosmic microwave background radiation, which is the afterglow of the initial explosion.

The Big Bang Theory postulates that all the matter and energy in the universe were concentrated in a singular point before expanding and cooling to form the universe as we recognize it today. This foundational concept sets the stage for understanding the physical laws and structures that govern our universe.

Other theories provide alternative perspectives but do not directly address the initiation of the universe in the same way as the Big Bang Theory. For example, the Steady State Theory suggests that the universe has no beginning or end, proposing that matter is continuously created to maintain a constant density in an expanding universe. The Theory of Relativity, on the other hand, primarily focuses on the gravitational effects of massive objects in space and their interactions rather than the origin of the universe itself. The Expansion Theory, while related, is more