Big Bang
The Big Bang is the term which refers to the origin point of the universe, an instantaneous expansion of a microscopic singularity. 

Captain James T. Kirk logged that "For years scientists have theorized that if our galaxy was created from a great explosion, then the center of the galaxy might still be creating new matter." In 2269, the  conducted a science mission to test this theory. ()

[[File:Just 'before' the universe.jpg|thumb|Just "before" the universe, as seen by Voyager'''s crew]]The particular instant of the Big Bang was considered a "Very old hiding place" among the time traveling . While attempting to flee from his fellow Q, Quinn transported the  to a point in time shortly before 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. Quinn soon transported Voyager to a Christmas tree before the newly-formed expanding universe reached the ship. ()

After the discovery of the Omega molecule, Starfleet cosmologists theorized that this molecule was the source of the Big Bang. ()

The Doctor referred to the Big Bang by the name of "Primordial Atom" and claimed it occurred 20 billion years ago. ()

Later, in 2376, an engineer aboard Voyager'' claimed that the Big Bang occurred 16 billion years prior. ()

See also 
Schlezholt's Theory of Multiple Big Bangs

External link
 

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Astronomy