What is the definition of big bang theory?

Answer 1

The Big Bang Theory is the best explanation for the origin of the Universe. It states that around 13.7 billion years ago, the Universe rapidly expanded from a singularity made entirely of energy. As the Universe expanded, it cooled, allowing energy to be converted into subatomic particles, and later atoms would form.

Answer 2

The Big Bang Theory present the theoretical premise for the causation, termination, and continuation of an evolutionary expansion of the universe. The Big Bang promotes that the universe is Time bound (or has a finite existence), that the universe is expanding (within the dimensional limits of Space and Time), that the universe is evolving a set amount of matter and energy while it is expanding over time, and that the universe is homogeneous and isotropic with respect to Space and Time.

Answer 3

The Hot Big Bang Theory and the Big Bang theory are one and the same. Originally the overtly descriptive modifier was provided to emphasized the concept that the first moments of the Big Bang existed as a hot dense plasma soup (from which the Cosmic Microwave Background Radiation (CMBR) barrier is considered a remnant). The implication was that the creation of the universe began as an explosion: i.e. to undergo a rapid chemical or nuclear reaction with the production of noise, heat, and violent expansion of gases. However these similarities belie the true nature of the Big Bang model as the evolutionary expansion of dimensional convergences for our reality of existence within a traditional fourth dimensional SpaceTime continuum.