Nebula
A nebula, or galactic nebula or nebula cloud, is an interstellar cloud of matter, usually gases (such as hydrogen) and dust. Many nebulae are stellar nurseries.

Since sensors and other systems functioned poorly in many nebulae, they were often used by starships to strategic advantage in conflicts.

Nebulae were sometimes known as interstellar dust clouds. ()

The  hid inside the Paulson Nebula from a Borg cube, temporarily shielding them from the Borg sensors. ()

In 2371, Tom Riker took the hijacked  into a nebula after Major Kira sabotaged the ship and temporarily rendered its cloaking device ineffective. ()

Captain Ransom once hid from a Klingon Bird-of-Prey for three days in a nebula near Epsilon IV. ()

In 2376,  crewmember Maxwell Burke suggested taking the ship into a class 2 nebula in order to avoid the pursuing . ()

While Voyager was undergoing a maintenance overhaul in 2377, the  searched a nebula near Annari space for dilithium. ()

Later that year, a ship crewed by Hirogen prey holograms, led by Iden, hid from two Hirogen  hunting vessels inside a nebula. In response, the Hirogen Alpha ordered one of his ships to circle the nebula, while the other entered it to drive the holograms out. Iden eventually left the nebula on his own to "liberate" three holograms on a nearby Nuu'Bari mining vessel. ()

When the Voyager crew was forced to abandon ship due to tetryon radiation from a subspace mine in 2377, The Doctor, as the ECH, took the ship into a nebula to escape  marauders. ()

Nebula classification 
 Class 1
 Class 2
 Class 3
 Class 9
 Class 11
 Class 17
 Class J
 Class K
 Class T
 Mutara class

Nebula types 
 Dark nebula
 Dark matter nebula
 Dichromic nebula
 Emission nebula
 Hydrogen cloud
 Inversion nebula
 Micro-nebula
 Planetary nebula
 Proto-nebula
 Protostellar nebula
 Reflection nebula
 Stellar nursery

Nebulae 
 Mutara Nebula
 Paulson Nebula
 Ionite Nebula
 Eagle Nebula
 Cat's Eye Nebula
 Azure Nebula
 Omarion Nebula
 Keyhole Nebula
 Arachnid Nebula
 Badlands
 MacPherson Nebula
 Volterra Nebula
 Verubin Nebula
 Chamra Vortex
 Mar Oscura Nebula
 Eagle Nebula
 M2-9
 Ngame Nebula
 Bubble Nebula
 Unnamed nebulae

Appendices

See also 
 :Category: Nebulae
 Nucleogenic cloud being

Background information 
In the  of , the film would have begun in deep space. After witnessing a supernova, the camera would move on, searching for V'ger. In its search, the camera would have seen "sparkling nebulae."

The final draft script of  refers to the Agasorian Nebula, though that particular nebula is not referenced in canon.

External links 
 
 
 
de:Stellarer Nebel
ja:星雲
nl:Nevel
Celestial objects
Nebulae
Deleted and unused material in background