![USS Voyager approaches plasma drift](https://cdn.statically.io/img/static.wikia.nocookie.net/memoryalpha/images/2/23/USS_Voyager_approaches_plasma_drift.jpg/revision/latest/scale-to-width-down/180?cb=20070517225207&path-prefix=en)
Voyager approaches a plasma drift.
A plasma drift was a nebula-like interstellar phenomenon.
A large plasma drift moved through the Talaxian system when Neelix was a child, blocking out the stars and moons for months. (VOY: "The Haunting of Deck Twelve")
In 2372, the USS Voyager entered a plasma drift almost half a sector long, to hide from a Vidiian-controlled star system. This was considered large for a plasma drift. Upon leaving the drift, they encountered some subspace turbulence that was in fact a divergence field. (VOY: "Deadlock")