The name of Season 03 Episode 21 of Star Trek: Enterprise was E². Why?

All episodes had a meaningful name which was related with the story, but I am unable to understand why that episode was named E². Is it just a meaningless fancy name for an episode with temporal ju-ju? Or, is there something from physics which fits in the equation?


1 Answer 1


The episode deals with the Enterprise encountering a second, alternate version of their ship.

The alternate version of the ship came into being after entering an unstable subspace corridor and going back in time 117 years.

Since there were two Enterprise ships, E2 refers to this (Enterprise * Enterprise = Enterprise2, or E2).

  • 7
    I hope you meant "speculation", since "fabrication" implies dishonesty... but yes, this is speculation (although it seems pretty obvious given the context, and more plausible than just some random characters strung together that are unrelated to the plot).
    – Beofett
    Apr 25, 2013 at 12:43
  • 3
    @SachinShekhar I seriously doubt there is an "official source" for why most episodes are named what they are.
    – Kevin
    Apr 25, 2013 at 15:12
  • 2
    Since when do you multiply ship name together? Apr 25, 2013 at 19:06
  • 2
    @user973810 There were two enterprise ships by eachother. E by E is E^2. It's like the old joke that Noah put animals on the ark 4 at a time because two by two they went on.
    – corsiKa
    Apr 25, 2013 at 19:25
  • 6
    @user973810 It was made because it was a good concept. It's also the entire reason I got into Star Trek, and I'm now one of the top Trek users on this site - and personally, I place ENT tied with TNG for quality.
    – Izkata
    Apr 26, 2013 at 13:55

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