Nebulae

NameUp Description Episode
DITL Nebula #29 This class 17 nebula was discovered in the Delta Quadrant by the USS Voyager one stardate 50126.4. It contained Hydrogen, Helium and seven thousand parts per million of Sirillium, a highly combustible energy source. Bussard collectors were well suited to collect material from it, though plasmatic turbulence made for a bumpy ride if shield compensation techniques were not used.1 Flashback
DITL Nebula #30 An Intrepid class vessel travelled through this nebula early in the lifetime of the class.2 Various Voyager episodes
DITL Nebula #31 The NX-01 visited this stellar nursery in 2151 to observe the Great Plume of Agasoria.3 Cold Front
DITL Nebula #32 Dark matter nebula containing several planets, once encountered by USS Voyager4 Cathexis
DITL Nebula #33 Voyager encountered this Mutara class nebula in 2374. It spanned a minimum of one hundred and ten light years and emitted subnucleonic radiation devastating to organic tissue. Voyager's crew was forced to go into suspended animation whilst the ship crossed the nebula under the control of Seven of Nine.5 One
DITL Nebula #34 Voyager encountered this class one nebula in 2374. The nebula contained traces of protomatter which the ship attempted to harvest using a shuttlecraft.6 Mortal Coil
DITL Nebula #35 Voyager encountered this Delta Quadrant nebula in 2374.7 The Gift
DITL Nebula #36 Voyager encountered this nebula in 2374.8 Hunters
DITL Nebula #37 This inversion nebula was encountered by Voyager in 2373. Such nebulae had long been theorised to be unstable, but this was uncertain as none had ever been studied in the Alpha Quadrant. This one was centuries old, maintained by an alien species.9 Alter Ego
DITL Nebula #38 Voyager encountered this nebula in 2375 after escaping from a vast region of empty space.10 Night
DITL Nebula #39 The USS Voyager encountered this nebula in 2372.11 Maneuvers
DITL Nebula #41 Voyager encountered this nebula in the Delta Quadrant in 2376.12 The Haunting of Deck Twelve
DITL Nebula #42 Voyager encountered this nebula in 2377.13 Drive
DITL Nebula #43 Voyager encountered this nebula in 2377.14 Flesh and Blood, Part 1
DITL Nebula #44 Voyager encountered this nebula in 2376.15 Good Shepherd
DITL Nebula #45 Voyager encountered this nebula in 2376.16 Life Line
DITL Nebula #46 Voyager encountered this nebula in 2377.17 Nightingale
DITL Nebula #48 Voyager encountered this nebula in 2375.18 The Disease
DITL Nebula #49 The Borg concealed a major transwarp hub within this nebula.19 Endgame, Part 1
DITL Nebula #50 This nebula was encountered by Captain Sisko in 2374. It contained at least one Class M planet.20 Rocks and Shoals
Agrat-Mot nebula21 A nebula located in the Delta Quadrant. Located in B'omar territory, the nebula was important in their negotiations with the Nassordin. The B'omar refused permission for Voyager to travel near the nebula when Captain Janeway negotiated for passage through their territory in that year.21 The Raven
Alawanir Nebula22 A nebula located in Federation territory. The USS Enterprise-D conducted spectral analyses of the Alawanir Nebula on several different frequencies whilst travelling to the Gariman system.22 Rightful Heir
Arachnid Nebula23 A nebula which the NX-01 charted in 2151. It was over eight billion kilometres in diameter, though an astronomy book which captain Archer had studied as a child had claimed that it was 6.5 billion kilometres across.23 Fusion
Azure Nebula1 A type 11 nebula on the border between the Klingon Empire and the Federation. Captain Sulu attempted to use the Azure nebula to cross into Klingon space in 2293 so as to rescue Captain Kirk an McCoy from Rura Pente. The attempt was foiled by a Klingon battle cruiser. The Azure nebula contains significant amounts of sirillium gas.1 Flashback
Betreka Nebula24 A nebula which was the site of the 18 year long Betreka Nebula Incident, in which Klingon and Cardassian forces clashed.24 The Way of the Warrior
Borgolis Nebula25 A nebula investigated by the Enterprise-D in 2369 because of the unusual radioactive emissions which it produced.25 Lessons
Chamra Vortex26 A nebula in the Gamma Quadrant, home to millions of asteroids. Croden hid his daughter in a stasis pod in the nebula whilst on the run from his people.26 Vortex
Coal Sack27 A galactic nebula.27 The Immunity Syndrome
Crab Nebula28 A nebula in the Alpha Quadrant. Data was once able to calculate the distance between the Omicron galaxy and the Crab nebula by a complex method which involved using the square root of pi and then multiplying it by nine to the third power.28 Manhunt
Gamma Erandi Nebula29 A stellar nursery, the Gamma Erandi Nebula generated high levels of subspace static and so interfered with subspace communications. In 2367 the USS Enterprise-D conducted a study of the nebula shortly after the trade agreements conference on Betazed. The subspace interference prevented the ship from picking up a distress call sent by Commander Riker when he was being held captive on a Ferengi vessel.29 Menage a Troi
Helaspont Nebula30 A nebula located near the Federation-Tzenkethi border. It was approximately twenty hours travel from Barisa Prime at high warp. The USS Ulysses studied protoplanetary masses in the Helaspont Nebula in 2371.30 The Adversary
Horsehead Nebula31 A backup copy of Voyager's EMH once claimed that B'Elanna had a chip on her shoulder the size of the horsehead nebula.31 Living Witness
Hugora Nebula32 A nebula located in the Demilitarised Zone between the Federation and Cardassia. Picard planned to hide ships within the Hugora nebula as part of a plat to ambush a Maquis force in 2370.32 Preemptive Strike
Jenkata Nebula33 A Gamma Quadrant nebula which is located near to both the Obatta cluster and the Teplan system. Major Kira avoided detection by a Jem'Hadar patrol by hiding in the Jenkata nebula.33 The Quickening
Lantar Nebula34 A Gamma Quadrant nebula which is near to the planet Hoek IV. Q offered to take Vash to the Lantar nebula in 2369, though she declined the offer.34 Q-Less
MacPherson Nebula35 A supernova remnant located approximately twelve hours away from the Cordannas system at warp 9. The USS Enterprise-D used detonated a modified photon torpedo in the MacPherson nebula to produce a large quantity of vertion particles in 2370.35 Emergence
McAllister C-5 Nebula36 A protostellar nebula located within Cardassian space some 7 light years from the border and 11 light years from Minos Korva. The particle flux inside the nebula is so severe that ships cannot remain within for more than 72 hours. In 2369 the Cardassians hid a fleet within the McAllister nebula in readiness for an attack on Minos Korva. Fortunately Captain Jellico was able to uncover the plot after detecting slight traces of damage on a Cardassian ship, and subsequently mined the nebula to force the withdrawal of the fleet.36 Chain of Command, Part 2
Mutara Nebula37 A nebula located in the Mutara sector, close to the Regula planetoid. It has sufficient static discharge and gas to prevent shields and tactical display systems from functioning. In 2285 the Mutara nebula was largely destroyed when the Genesis Device was detonated within it by Khan Noonien Singh. The matter of the nebula was converted into the Genesis planet.37 Star Trek II : The Wrath of Khan
Necrit Expanse This large expanse lay at the edge of the area which Neelix was familiar with.38 Fair Trade
Ngame Nebula39 A nebula which the USS Enterprise-D expected to pass on the way to the Evadne system in 2367.39 Clues
Omarion Nebula40 A nebula in the Gamma Quadrant, the Omarion nebula was the home of a rouge planet which served as homeworld to the Founders. The Founders once sent a hundred of their infants out into the galaxy to explore, implanting within each a strong compulsion to return one day to the Omarion nebula. In 2371 Odo obeyed this compulsion, travelling to the nebula after the Defiant was captured by Jem'Hadar forces.41 Later that year a Romulan-Cardassian fleet travelled to the nebula to attack the planet. The fleet was destroyed by a Jem'Hadar force hiding within the nebula.42 Various Deep Space Nine episodes
Ordek Nebula43 A nebula which is home to the Wogneer creatures. Captain Picard once risked his life to save the Wogneer.43 Allegiance
Orpisay nebula44 The Orpisay nebula is also a star nursery in the Delta Quadrant. In 2376 Icheb was able to enhance Voyager's long range sensors to detect a star forming in the nebula.44 Child's Play
Paulson Nebula45 A nebula located within Federation space near Zeta Alpha II. It is composed of 82% dilithium hydroxyls, magnesium, chromium and various other elements - components which make it difficult to operate sensors. In 2366 the Enterprise-D hid from a Borg cube within the Paulson Nebula, until it was forced out by magnetometric guided charges.45 The Best of Both Worlds, Part 1
Robinson nebula46 A dark matter discovered by the NX-01 in 2153. It was named for A.G. Robinson, the first Human to travel at Warp 2.46 First Flight
Rolor Nebula47 A nebula located near the Demilitarized Zone between the Federation and Cardassia. It is between the Bajor and Dreon systems, requiring ships travelling between the two to detour around it. In 2372 Captain Sisko questioned Kasidy Yates on the routes she took around the nebula.47 For the Cause
Tibor Nebula48 A nebula located in Federation space. It was the site of a battle when Starfleet's 7th Fleet tried to close a Dominion supply line running through Betazoid space into the Argolis cluster.48 The Reckoning
Tong Beak Nebula49 A nebula on the border between the Klingon Empire and Cardassia. In 2373 General Martok ordered the Rotarran to go around the nebula, fearing a confrontation with the Jem'Hadar. The diversion added a day to the ship's mission to find survivors from the B'Moth. The decision was unpopular with the crew, who correctly thought that it indicated cowardice on Martok's part.49 Soldiers of the Empire
Vodrey Nebula50 A nebula the border between the Klingon Empire and the Federation, near to the Maranga system. In 2370 the stellar dynamics department of the USS Enterprise-D conducted a study of the nebula after a rendezvous with the USS Kearsarge was delayed.50 Firstborn
Volterra Nebula51 A stellar nursery which contains dozens of protostars in different stages of development. In 2369 the USS Enterprise-D did a three week analysis of the nebula.51 The Chase

Yellow text = Canon source Green text = Backstage source White text = DITL speculation

References
#SeriesSeasonSourceComment
1VOY3Flashback
2Various Voyager episodes
3ENT1Cold Front
4VOY1Cathexis
5VOY4One
6VOY4Mortal Coil
7VOY4The Gift
8VOY4Hunters
9VOY3Alter Ego
10VOY5Night
11VOY2Maneuvers
12VOY6The Haunting of Deck Twelve
13VOY7Drive
14VOY7Flesh and Blood, Part 1
15VOY6Good Shepherd
16VOY6Life Line
17VOY7Nightingale
18VOY5The Disease
19VOY7Endgame, Part 1
20DS96Rocks and Shoals
21VOY4The Raven
22TNG6Rightful Heir
23ENT1Fusion
24DS94The Way of the Warrior
25TNG6Lessons
26DS91Vortex
27TOS2The Immunity Syndrome
28TNG2Manhunt
29TNG3Menage a Troi
30DS93The Adversary
31VOY4Living Witness
32TNG7Preemptive Strike
33DS94The Quickening
34DS91Q-Less
35TNG7Emergence
36TNG6Chain of Command, Part 2
37Star Trek II : The Wrath of Khan
38VOY3Fair Trade
39TNG4Clues
40Various Deep Space Nine episodes
41DS93The Search, Part 2
42DS93The Die is Cast
43TNG3Allegiance
44VOY6Child's Play
45TNG3The Best of Both Worlds, Part 1
46ENT2First Flight
47DS94For the Cause
48DS96The Reckoning
49DS95Soldiers of the Empire
50TNG7Firstborn
51TNG6The Chase
Series:VOY Season 3 (Disc 1)
Source:Flashback
Series:VOY Season (Disc )
Source:Various Voyager episodes
Series:ENT Season 1 (Disc 3)
Source:Cold Front
Series:VOY Season 1 (Disc 4)
Source:Cathexis
Series:VOY Season 4 (Disc 7)
Source:One
Series:VOY Season 4 (Disc 3)
Source:Mortal Coil
Series:VOY Season 4 (Disc 1)
Source:The Gift
Series:VOY Season 4 (Disc 4)
Source:Hunters
Series:VOY Season 3 (Disc 4)
Source:Alter Ego
Series:VOY Season 5 (Disc 1)
Source:Night
Series:VOY Season 2 (Disc 3)
Source:Maneuvers
Series:VOY Season 6 (Disc 7)
Source:The Haunting of Deck Twelve
Series:VOY Season 7 (Disc 1)
Source:Drive
Series:VOY Season 7 (Disc 3)
Source:Flesh and Blood, Part 1
Series:VOY Season 6 (Disc 5)
Source:Good Shepherd
Series:VOY Season 6 (Disc 6)
Source:Life Line
Series:VOY Season 7 (Disc 2)
Source:Nightingale
Series:VOY Season 5 (Disc 5)
Source:The Disease
Series:VOY Season 7 (Disc 7)
Source:Endgame, Part 1
Series:DS9 Season 6 (Disc 1)
Source:Rocks and Shoals
Series:VOY Season 4 (Disc 2)
Source:The Raven
Series:TNG Season 6 (Disc 6)
Source:Rightful Heir
Series:ENT Season 1 (Disc 5)
Source:Fusion
Series:DS9 Season 4 (Disc 1)
Source:The Way of the Warrior
Series:TNG Season 6 (Disc 5)
Source:Lessons
Series:DS9 Season 1 (Disc 3)
Source:Vortex
Series:TOS Season 2 (Disc 5)
Source:The Immunity Syndrome
Series:TNG Season 2 (Disc 5)
Source:Manhunt
Series:TNG Season 3 (Disc 6)
Source:Menage a Troi
Series:DS9 Season 3 (Disc 7)
Source:The Adversary
Series:VOY Season 4 (Disc 6)
Source:Living Witness
Series:TNG Season 7 (Disc 6)
Source:Preemptive Strike
Series:DS9 Season 4 (Disc 6)
Source:The Quickening
Series:DS9 Season 1 (Disc 2)
Source:Q-Less
Series:TNG Season 7 (Disc 6)
Source:Emergence
Series:TNG Season 6 (Disc 3)
Source:Chain of Command, Part 2
Source:Star Trek II : The Wrath of Khan
Series:VOY Season 3 (Disc 4)
Source:Fair Trade
Series:TNG Season 4 (Disc 4)
Source:Clues
Series:DS9 Season (Disc )
Source:Various Deep Space Nine episodes
Series:DS9 Season 3 (Disc 1)
Source:The Search, Part 2
Series:DS9 Season 3 (Disc 6)
Source:The Die is Cast
Series:TNG Season 3 (Disc 5)
Source:Allegiance
Series:VOY Season 6 (Disc 5)
Source:Child's Play
Series:TNG Season 3 (Disc 7)
Source:The Best of Both Worlds, Part 1
Series:ENT Season 2 (Disc 6)
Source:First Flight
Series:DS9 Season 4 (Disc 6)
Source:For the Cause
Series:DS9 Season 6 (Disc 6)
Source:The Reckoning
Series:DS9 Season 5 (Disc 6)
Source:Soldiers of the Empire
Series:TNG Season 7 (Disc 6)
Source:Firstborn
Series:TNG Season 6 (Disc 5)
Source:The Chase
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