Big Bang
From Memory Alpha, the free Star Trek reference
The Big Bang is the term which refers to the origin point of the universe, an instantaneous expansion of a microscopic singularity.
While attempting to flee from his fellow Q, Quinn transported the USS Voyager to a point in time shortly after the Big Bang. B'Elanna Torres remarked that Voyager was not capable of surviving the formation of the cosmos. Q retorted by stating she should consider it an honor to have her atoms become part of the entire universe.(VOY: "Death Wish")
After the discovery of the Omega molecule, Starfleet cosmologists theorized that this molecule was the source of the Big Bang. (VOY: "The Omega Directive")
