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A '''Supernova''' (plural: supernovae or supernovas) is a stellar explosion. They are extremely luminous and cause a burst of [[radiation]] that may briefly outshine an entire [[Milky Way|galaxy]] before fading from view over several weeks or months. During this short interval, a supernova can radiate as much energy as the [[Sol|Sun]] could emit over its life span. The explosion expels much or all of a star's material at a velocity of up to a tenth the speed of light, driving a shock wave into the surrounding interstellar medium. This shock wave sweeps up an expanding shell of gas and dust called a supernova remnant.<ref>[[Wikipedia:Supernova|Wikipedia]]</ref> | A '''Supernova''' (plural: supernovae or supernovas) is a stellar explosion. They are extremely luminous and cause a burst of [[radiation]] that may briefly outshine an entire [[Milky Way|galaxy]] before fading from view over several weeks or months. During this short interval, a supernova can radiate as much energy as the [[Sol|Sun]] could emit over its life span. The explosion expels much or all of a star's material at a velocity of up to a tenth the speed of light, driving a shock wave into the surrounding interstellar medium. This shock wave sweeps up an expanding shell of gas and dust called a supernova remnant.<ref>[[Wikipedia:Supernova|Wikipedia]]</ref> | ||
On average, supernovae occur about once every 50 years in a galaxy the size of the Milky Way and play a significant role in enriching the interstellar medium with heavy elements. Furthermore, the expanding shock waves from supernova explosions can trigger the formation of new stars. | On average, supernovae occur about once every 50 years in a galaxy the size of the [[Milky Way]] and play a significant role in enriching the interstellar medium with heavy elements. Furthermore, the expanding shock waves from supernova explosions can trigger the formation of new stars. | ||
Before their extinction at the hands of [[the Flood]], and the [[Halo Array]], the Forerunner fleet had "the capacity to force premature stellar collapse," creating an artificial supernova, used to destroy entire star systems taken by the Flood.<ref>''[[Terminals]]'', Second Terminal</ref> | Before their extinction at the hands of [[the Flood]], and the [[Halo Array]], the Forerunner fleet had "the capacity to force premature stellar collapse," creating an artificial supernova, used to destroy entire star systems taken by the Flood.<ref>''[[Terminals]]'', Second Terminal</ref> | ||
==Halo Wars== | ==Halo Wars== | ||
The UNSC moved the Spirit of Fire's FTL Reactor into The Apex and detonated it | In the [[Battle of the Apex]] in [[2531]], The [[UNSC]] moved the {{UNSCShip|Spirit of Fire}}'s [[Shaw-Fujikawa Translight Engine|FTL Reactor]] into [[The Apex]] site of the [[Shield World (Halo Wars)|unnamed Shield World]] and detonated it close to the star. The chain-reaction sent the [[Shield World]]'s sun into supernova state, obliterating the installation and the fleet of [[Unnamed Forerunner Starship|Forerunner Ships]], preventing the [[Covenant]] from using it and saving [[Human|humanity]] from total defeat and extinction. | ||
==Sources== | ==Sources== | ||