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A supernova explosion

Beta Niobe nova remastered

Beta Niobe goes nova in 2269


A supernova is a massive explosion that occurs upon the death of an old star. When a massive star runs out of nuclear fuel, the star has no counteractive force against its own gravity and collapses. The resulting shock wave blows the outer layers of the star into space, possibly leaving a core that becomes either a neutron star or a black hole, depending on the remaining mass. A different kind of supernova occurs (more rarely in our Milky Way Galaxy) when a white dwarf star in a tight binary system swallows material from her companion, eventually becoming too massive and collapsing.

In the negative universe, a supernova is a dead star coming to life. (TAS: "The Counter-Clock Incident")

When stars explode, they emit an electrical magnetic pulse. This pulse can cause electro-magnetic devices such as computers to fail. An event of this kind took place in 2364 when a star in the Beta Magellan system supernovaed resulting in main computer failure on Bynaus. (TNG: "11001001")

A supernova which occurred 600,000 years ago, during the Age of Makto, was responsible for the fall of the Tkon Empire. (TNG: "The Last Outpost")

In July 2151, Enterprise came within three light years of a J'ral class supernova remnant, but did not break course to study it. (ENT: "Civilization")

In 2268, the crew of the USS Enterprise observed the supernova Beta Niobe and the destruction of planet Sarpeidon. A few weeks earlier, she had already witnessed the supernova Minara. (TOS: "The Empath", "All Our Yesterdays")

A chart in the command briefing for Operation Retrieve featured Frazee's Nova and Winter's Nova. (Star Trek VI: The Undiscovered Country)

In 2366, the star Beta Stromgren exploded as a supernova. The last stages of the star's life were observed by the USS Enterprise-D while taking first contact with the creature Gomtuu. (TNG: "Tin Man")

Supernovae, however, generally occur only approximately twice per century in the Milky Way Galaxy. As of the 24th century, only three Starfleet vessels ever witnessed supernovae firsthand. The record for the closest observation was less than 10 billion kilometers and was set by the USS Voyager in 2373. (VOY: "The Q and the Grey")

In 2373, a number of supernovae occurred within a small region of the Delta Quadrant, as a result of the Q Civil War. These supernovae were actually the result of spatial disruptions within the Q Continuum.

It was explained to Chakotay, by a female Q, that "each time a star implodes, a negative density false vacuum is created, which actually sucks the surrounding matter into the Continuum."

The crew of Voyager, acting on information provided by the female Q, used the explosion of one of these supernovae to enter the Continuum themselves, in order to rescue Q and Captain Janeway. (VOY: "The Q and the Grey")

It is never clarified if the spatial disruptions in the Q Continuum were created deliberately or merely side-effects of various Q weaponry, but only that the Q civil war, and Q's actions, were having galactic consequences.

Several weeks later, in the Alpha Quadrant, the Changeling posing as Doctor Julian Bashir attempted to trigger a supernova in the Bajoran sun using trilithium, tekasite and protomatter. The Founder was stopped by Kira Nerys, Jadzia Dax and the crew of the USS Defiant. (DS9: "By Inferno's Light")

When Janeway requested arithrazine from The Doctor in 2374, he asked her if she was planning to "stroll through a supernova." (VOY: "The Omega Directive")

In 2375, Janeway used studying a supernova remnant as an excuse for entering a restricted part of Devore space.(VOY: "Counterpoint")

In 2387, a supernova threatened the galaxy. Ambassador Spock stopped the supernova by using red matter to create a black hole, which consumed the supernova. Before he could, however, the supernova destroyed Romulus. (Star Trek)

In Star Trek: Countdown, the official comic book prequel to Star Trek, the star which went supernova and destroyed Romulus was called the Hobus star. It is explained that the Hobus supernova was unlike any previously seen: as the supernova grew, it converted mass into energy, which increased its power and allowed it to expand. As a result, its threat reached beyond the Hobus system and potentially the entire galaxy.

Supernova classes

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