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Memory Beta, non-canon Star Trek Wiki
For other uses, see Gemini.
STA Gemini Effect

Gemini effect used on the USS Enterprise-E

The Gemini effect was the name give to the project of temporal research conducted by Doctor Paul Manheim in 2364.

History and specifics[]

The effect itself creates a temporal disturbance in the space-time continuum that allows two same ships to exist simultaneously in different locations. The effect was temporary and the duplicate ship would eventually disappear, but this did allow Starfleet to bolster in numbers in short engagements against the enemy.

Nebula-class vessels and the USS Premonition were capable of accomplishing the effect, which they used to create duplicate vessels to bolster a Federation fleet. (TNG video games: Armada, Armada II)