In astronomy, cosmogony is the study of the origin of things like the universe, the Solar System, or the Earth–Moon system. The popular cosmological model for the birth of the universe is the Big Bang theory.
It is generally accepted that the universe began as a singularity, and when the singularity of the universe started to expand, the Big Bang occurred, which began the universe.
Others like Stephen Hawking say "time" did not exist and was only born with the universe. Hence the universe does not have an origin story. Time did not exist before the creation of the universe.
There is currently no theoretical model that explains the earliest moments of the universe's existence (during the Planck time). This is because we lack a testable theory of quantum gravity. Still, some researchers in string theory, M theory, and loop quantum cosmology have some ideas.
It is not the same as cosmologyEdit
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