Big Bang

The Big Bang was the event that created the universe, an indeterminate amount of time prior to the formation of the Galaxy (which predates the Cularin system, placing the formation of the Galaxy at least as early as 7.5 billion years BBY).

The Shawkenese universe destroyer was designed with the purpose of eventually triggering a new Big Bang, thus forming another universe, by causing a chain reaction that would prematurely put the existing universe into a heat death state. While this exact outcome is questionable, the effects produced by this superweapon could have still been disastrous had it ever been given a chance to destroy the planet Shawken, where it was located.

Behind the scenes
It is probable that the timespan between the Big Bang and the formation of the Galaxy was less than one billion years, as the similar Milky Way galaxy is nearly as old as the universe itself. Still, the date of the formation of the Galaxy is not known with sufficient precision.