27

"Star Trek" fans have labeled the new J.J. Abrams movie as being set in an alternate timeline. Alternate because it is different from the established history of the Star Trek universe.

The word alternate here also seems to imply that the original timeline must be continuing as it was, and the new timeline is a branch of the original.

Assuming the two timelines continue to move forward does this mean they are in fact parallel universes? Is that a reasonable wording?

Are parallel universes and alternate timelines the same thing or are they completely different concepts?

9

A parallel universe is a different universe that occupies the same timeline. However, the events that transpire in this universe are (usually) independent of all other universes. A different timeline is when something happens in a universe in different ways, at the same time. You can have multiple timelines in 1 universe, but not multiple universes in 1 timeline. That said, there is the (real) theory that every possible action has happened, and that a separate universe is created for each one: While walking, I choose to go left, and another universe is created where I choose to go right. This could be interpreted as both a multiverse and multi-timeline scenario.

  • Provided the other universe supports timeline feature.. I mean, its not necessary that other parallel universe is similar to ours with 4 dimensional cosmos.. – Captain Cold Jan 28 '12 at 3:45
  • @Teknophilia: "You can have multiple timelines in 1 universe, but not multiple universes in 1 timeline" .... um... this is exactly what parallel universes are... – ThePopMachine Jan 22 '15 at 16:14
  • This answer contradicts itself. You lead with "a parallel universe...occupies the same timeline." Then a few sentences later you say "you [cannot] have multiple universes in 1 timeline". – Sildoreth May 29 '15 at 12:34
34

An alternate timeline is a type of parallel universe. You can have parallel universes that have nothing in common with each other; "alternate timeline" implies that they had the same history up to a point of divergence.

  • 1
    Very simple, easy to understand answer. Short and to the point. Thanks – Kevin Mark May 11 '11 at 20:12
3

A parallel universe runs concurrent to another and shares the same timestream. That is, they develop things in the same pace according to the elements of existence but not necessarily with the same rate of technological or intelligence based advances.

An alternate timeline is a different take on a universe and is caused by a split or fork at one juncture or event to create this new existence.

You can travel between parallel universes because they share the same string of time but access it through a different plane of dimension.

You can't do that with alternate timelines since there is a point early on where they diverged and split apart. To get to the alternate timeline you need to travel back in time to reach that point and take the other route.

  • 3
    this theory of not able to switch between parallel universes when they are alternate timelines won't make sense to me. do you have any reference or book which you are basing your theory on? – Samuel Herzog Jan 29 '11 at 18:08
  • I would add the parallel U's have many differences with no apparent single cause. They just coexist. Think Fringe. Bearded Spock. In contrast,alternate U's fork at one specific event. They may diverge wildly via chaos theory, but still it's that one event. George Mcfly punches out Biff, or not. Mcoy saves Joan Collins or not (TOS-City-Edge-Forever). In the JJ Abrams Star Trek, the destruction of Vulcan is that event. There is no jumping back and forth, I agree. Unless your are Q (TNG Tapestry). – Steve Sep 26 '16 at 2:16
2

Taking a more meta point of view: from within a story, whenever a "parallel universe" or "alternate timeline" are mentioned, it's usually something that will be woven into the plot to demonstrate alternative scenarios. In "Stargate" for example, they have cited both and there isn't really a specific rule they follow to differentiate one from the other; though it is fairly soft.

From the point of view of the reader/viewer, those concepts are more of a hand-wave to tie things together when they're similar, but have irreconcilable differences.

-1

1. A parallel universe is a different universe that occupies the same timeline. However, the events that transpire in this universe are (usually) independent of all other universes. A different timeline is when something happens in a universe in different ways, at the same time. 2. You can have multiple timelines in 1 universe, but not multiple universes in 1 timeline. That said, there is the (real) theory that every possible action has happened, and that a separate universe is created for each one: While walking, I choose to go left, and another universe is created where I choose to go right. This could be interpreted as both a multiverse and multi-timeline scenario.

1 & 2: These two points contradict each other. If you can have a parallel universe occupy the same timeline as another universe, how then can you not have multiple universes in one timeline? A better way of explaining this might be that You can have multiple universes in one timeline but not multiple timelines in one universe. That said, we either hold in question a point of divergence or a unique point of origin for the universe under discussion. This raises the question, aren't divergences and points of origins manifestations of similar but different universes? This could mean at least 7+ billion (factoring the number of actions taken on the individual, familial, neighborhood, local, city, regional, state, national, world level and so on) iterations of our universe as we may imagine it from our scope of scientific knowledge on on this planet.

-1

There is no real difference between the two concepts. I'll keep this in simple terms. Multiple realities can be the result of every possible decision realized. Multiple timelines are essentially the same thing. Multiple realities can have multiple timelines. The most likely outcome is that there would be a very strong likely hood of convergence or overlapping/ identical realities and timelines. Using star trek as the paradigm, what would happen in the main universe if someone in the mirror universe went back in time (mirror timeline)? How did Nero's time displacement effect the mirror universe? If there are quantum realities then it must be that there are quantum timelines within those realities. The two concepts are not mutually exclusive of each other.

  • you should post link to where you get your facts ;) – Rocket Jan 22 '15 at 6:51

protected by Rand al'Thor Sep 25 '16 at 16:55

Thank you for your interest in this question. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).

Would you like to answer one of these unanswered questions instead?

Not the answer you're looking for? Browse other questions tagged or ask your own question.