History and specifics
During its final phase, a collapsar begins to swell in size, producing increasing quantities of neutronium and gravimetric stress. At a certain point, overwhelming gravity forces itself to collapse inward, blasting away its neutronium and emitting X-ray bursts until it becomes a black hole.
In 2371, the crew of the Oberth-class USS Tenebrae observed the star FGC-27 transition from a collapsar into a black hole. Science officer Wyv Srri accurately predicted that it would collapse in six days. The final stage took ten hours, during which FGC-27 illuminated the surrounding Mar Oscura dark matter nebula with an orange-blow glow. A unique stream of particle emissions were detected — fleeing non-corporeal Umbra, lifeforms that lived within the star who were able to inhabit the bodies of several of the crew. (Last Unicorn RPG module: Planetary Adventures mission: "On the Edge of Night")
In the 2370s, Collapsar 49 in the Arteline sector was used as a sensor test site for the shakedown cruise of the Nebula-class USS Discovery under Captain Ann Potrikos. En route, the ship's warp engines would not disengage, leaving the crew with 30 minutes to avoid destruction. (Last Unicorn RPG module: Star Trek: The Next Generation Core Game Book mission: "Shakedown Cruise")
- Collapsar 49
|By class and type||class O blue-violet star • class B blue star • class A blue-white star • class F white star (white dwarf) • class G yellow star (yellow dwarf • yellow giant) • class K orange star (orange giant) • class M red star (red dwarf • red giant) • boson star • brown dwarf • green star • N-type star • R-type star • S-type star • D-type star|
|By size or makeup||black hole/black star • carbon star • dwarf star (brown dwarf • red dwarf • white dwarf • yellow dwarf) • giant star (blue giant • red giant • orange giant • yellow giant) • Lazarus star • microstar • neutron star (collapsar • magnetar • pulsar) • protostar • supergiant star • variable star • white hole • Wolf-Rayet star|
- Last Unicorn RPG module: Star Trek: The Next Generation Core Game Book mission: "Shakedown Cruise"
- Last Unicorn RPG module: Planetary Adventures mission: "On the Edge of Night"