a universe conceived of as existing alongside our own, having many similarities to it but usually differing from it in some significant way (as having a different history or different physical laws)
We accept your main proposition unreservedly; namely, that we conceive ourselves to be living in a parallel universe to yours, on a planet the very brother of your own, indeed quite amazingly like yours, having regard to all the possible contrasts we might have found here.
[Reviewing Fredric Brown’s What Mad Universe:] The editor of a 1954 science-fiction pulp is kicked into a parallel universe where his magazine is a straight adventure book.
I could be getting the answer to a million guesses. I could say it’s the future, a parallel universe, another dimension, even something from another life form in another universe.
From that beginning grew the Imperium—the government claiming sovereignty over the entire Net of alternate worlds. Your world—which is known to us as Blight Insular Three—is but one of the uncountable parallel universes, each differing only infinitesimally from its neighbor.
It’s something that has been considered…that parallel universes are, in fact, alternative time tracks.
You probably haven’t heard of the many-worlds theory in quantum mechanics, but a lot of people consider the idea of parallel universes.
To some extent, I think all time-travel stories are parallel-universe stories whether they are acknowledged as such or not.
‘Don’t tell me you don’t get it! Look, I'm an alternate you from a parallel universe, capeche ?’
Imagine that there were countless parallel universes, one after the other, with no end. Imagine that in a different universe than the one you inhabit, a different you devised a plan to murder each universe’s version of yourself.
H.G Wells, Men Like Gods
Last modified 2021-01-17 16:02:27
In the compilation of some entries, HDSF has drawn extensively on corresponding entries in OED.