In "First Contact" the Borg travel to the Earth's past to change history. Have the Borg ever made use of time travel as a weapon, much like (say) the Krenim in the Star Trek Voyage story "Year of Hell", or considered time travel to make assimilation easier.

  • related: scifi.stackexchange.com/questions/168089/…
    – NKCampbell
    Commented Sep 29, 2017 at 19:17
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    Directly weaponizing time travel didn't work out too well for the Krenim. Commented Sep 30, 2017 at 2:32
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    Isn't one of the main reasons to assimilate a society to gain their technologies​. Iirc there are species which are left alone because they have nothing to offer the collective tech wise. Time traveling back to assimilate would mean missing out on lots of juicy tech stuff. Commented Sep 30, 2017 at 9:01
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    @WiggotheWookie - You're ignoring all of the advanced (but now extinct) species that the Borg could raid. I would imagine that assimilating an Iconian facility would be a very very very tempting prospect for the Borg
    – Valorum
    Commented Sep 30, 2017 at 10:44
  • @WiggotheWookie But wasn't this the premise of the story First Contact?
    – user66716
    Commented Sep 30, 2017 at 18:58

1 Answer 1


sounds cool - they should make a movie about that

Star Trek: First Contact


During an attack against Earth, the sensors detect that the Borg sphere is creating a temporal vortex; the crew all watch the viewscreen as the Borg vessel disappears through the vortex and Earth dramatically changes. Seeing that it is now populated entirely by Borg drones and has a toxic atmosphere, they determine that history has been changed, having been protected from the changes themselves by the wake of the temporal vortex. As the vortex collapses, Captain Picard orders Lieutenant Hawk not to alter course and have the Enterprise follow the Borg into the past – to repair whatever damage they've done.

(note: the film was released in 1996, and the Year of Hell in Voyager was broadcast in 1997)

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    Not sure this qualifies as directly weaponizing time-travel. The time-travel is a tool, the Borg are still assaulting people with regular weapons. The Krenim weapon was directly removing someone from the timestream IIRC.
    – ench
    Commented Sep 29, 2017 at 19:17
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    it's absolutely weaponizing - they effectively "kill" the Federation and Starfleet by going back in time and eliminating the opponent before it is even born - thus winning before the battle can even start
    – NKCampbell
    Commented Sep 29, 2017 at 19:21
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    I'd count it as a tactic rather than a weapon. Commented Sep 30, 2017 at 2:33
  • Thanks, I was aware of the First Contact, I should have made that obvious and will amend the question.
    – user66716
    Commented Sep 30, 2017 at 7:20
  • @HarryJohnston so...you're looking for something like Deja Fu?
    – Broklynite
    Commented Sep 30, 2017 at 8:17

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