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Memory Beta, non-canon Star Trek Wiki
Memory Beta, non-canon Star Trek Wiki

The Avenger enters a cerulean nebula in Sector 441.

In Federation Starfleet's alphabetic nebula classification[1], a cerulean nebula was a type of gas cloud in interstellar space. Nebulae of this class disrupted a starship's deflector shields and most conventional and special weapons. Blue nebulae were called cerulean. (ST video game: Armada)

History and specifics[]

Cerulean nebulae[]

In nebular classification, these nebulae proved to be a haven from enemy threats. Shields and cloaking devices did not work within these nebulae, and weapons were generally rendered non-functional. In the year 2376, Acting Captain Worf of the USS Avenger took advantage of these properties when he navigated his ship through cerulean nebulae in the Ikolis Expanse in Sector 441 to evade pursuit by Toral, son of Duras, and his House of Duras forces. (ST video game: Armada mission: "Vendetta")

In 2379, the tactical advantages of cerulean nebulae were covered by Lieutenant Commander Carey during a training mission at Starfleet Academy. (ST video game: Armada II mission: "Tutorial: Combat")

Other blue nebulae[]

The class-11 Azure Nebula in the Beta Quadrant.

A class 17 nebula in the Delta Quadrant.

A class 11 nebula was a type of blue nebula. The Azure Nebula was of this particular type. In 2373, Lieutenant Tuvok found an equally blue class 17 nebula superficially similar to the class-11. (VOY episode & novelization: Flashback)

The ShiKahr within the Celes Nebula.

In 2409, the USS ShiKahr surveyed the Celes Nebula within the Celes star system. Gas pockets within the nebula prevented Starfleet ships from entering full impulse. Anomalies also caused system failures. Sensor range was diminished, allowing Nausicaan forces to sneak up on the Starfleet ships in the nebula. (STO - Klingon War mission: "War is Good for Business")

Known cerulean nebulae[]



nebular classification
alphanumeric class 1class 2class 3class 9class 11class 12class 17class Jclass Kclass TMutara class
descriptions cerulean nebuladark nebuladark matter nebuladichromatic nebulaemission nebulainversion nebulalatinum nebulametaphasic nebulametreon nebulamicro-nebulaplanetary nebulaproto-nebulaprotostellar nebularadioactive nebulareflection nebulastellar nurserytachyon nebula

Appearances and references[]