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Questions tagged [parallel-universe]

A parallel universe or alternative reality is a hypothetical self-contained separate reality coexisting with one's own. A specific group of parallel universes is called a "multiverse", although this term can also be used to describe the possible parallel universes that constitute reality.

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What is the first instance of a portal to another world?

In ancient Greece, the gods lived up on a mountain, and Hades seems to have been a place that you could sail to. Personally, I think in modern times the concept of a portal or wormhole is so familiar,...
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What's the most recent specific historical element that is common between Star Trek and the real world?

It is well known that there appears to be some divergence between the events of the Star Trek universe and ours (in particular, the Augments and Khan Singh, etc.) Related: Has Star Trek ever ...
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3answers
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Story Identification: Fantasy world that is “the one true world”

Sometime in the early 90's, I borrowed an audio book from a local library. I would be interested in reading it in full, but I don't remember the author or title. Given that it was an audio book in a ...
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1answer
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Is there a depiction of Superman where he is an African American?

Is there a comic book, animation, or any other media where Superman is depicted as being an African American? I know that there are alternate universes where he is, for example, a Soviet, but I'm ...
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7answers
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Is there a difference between a parallel universe and an alternate universe?

This was prompted by a previous question I had here, but I decided it was a good stand-alone question. This is a general science fiction question and not specific to any particular world. Is there a ...
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4answers
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Can Marty McFly ever truly return home?

In the Back to the Future trilogy, the character Marty McFly travels back in time, and meets his own parents. In doing this, he directly changes the outcome of many things including the relationship ...
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1answer
2k views

SF book about people trapped in a series of worlds they imagine

I read this story a while ago, before 1990, probably quite a bit eartlier, and I suspect it is rather older than that (60s or 70s?). I think it was a short story, but I am not sure. It is set in the ...
27
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1answer
1k views

Complicated story identification from book cover

I really want to find this book again. I had it back in the seventies, the story was complex, surreal, competing realities type. The cover showed one figure (I think), anyway, their neck was a ...
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1answer
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Story about machines generating energy with parallel universes, endangering ours

I suppose I read this story in a book in the nineties but I have no memory of actually reading it or the cover, I just remember a lot of the plot. Scientists find out they are being contacted by the ...
23
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1answer
586 views

Novel in which the protagonist fades out is forgotten by, and can't interact with, the rest of the world

Trying to identify a novel I read years ago (probably in the '80s) in which the protagonist (late teens, early 20s?) is gradually forgotten by and ceases to be able to interact with the rest of the ...
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8answers
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What is the meaning to the ending of Another Earth?

At the very end of the movie Another Earth (2011), Rhoda What is the meaning of this? Did John I don't understand the meaning of the end at all.
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2answers
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Man transported from Alternate World into ours by a Neutrino Detector

Probably read 15-20 years ago. English Paperback. Scientists running a deep underground Neutrino Detector [might have been cosmic rays]. It was a VERY Large tank of water with detectors built into ...
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1answer
803 views

What exactly are the 'voids' in the Fringe parallel universe?

From what I can tell the primary reason that the other parallel universe is seeking to destroy our universe is because they presume that the voids that appear there are being caused by this universe. ...
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1answer
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Short story about a hole to another universe that pulls in metal

This question reminded me of a story I read in the 90s. A woman is caught shoplifting a bunch of metal items by throwing them into her purse. She has no memory, and the purse is empty. Anything metal ...
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1answer
2k views

Story about a multiverse theory of immortality

Please help me identify a short story I read about a guy who believed that the multiverse was true, but the one that we experienced was the one in which we lived the longest. He was also contemplating ...
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2answers
4k views

Boy meets female version of self from alternate dimension after his mother dies

When I was young I read a book about a teenage boy whose life was very miserable because his mother had died. He then finds a girl in his house and she thinks she is in her house. They share about ...
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3answers
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Name a book of the 80s about a group of scientist/students being transported to a parallel universe

Can you help me identify this book? I read it in the 80s. What I can remember: It was about a group of people who get sucked into a parallel universe / another world after a device malfunctions and ...
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1answer
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When was the concept of multiverse used in comics for the first time?

The concept of multiverse, sharing different universes and characters travelling in other alternate dimensions, when was the first time this happened in comic books ?
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1answer
630 views

A (G-rated) graphic novel with a picture of purple tentacles coming out of a door on the cover

I'm trying to find a graphic novel about two kids, a boy and a girl, who moved to an old family house because they couldn't afford where they were living anymore. In the house, they discovered a ...
15
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1answer
523 views

What “time travel” story required the traveller to mentally reconstruct his world in order to return to it?

Here's what I remember about it: The protagonist is sent a relatively short distance into the future (maybe a year? I've forgotten). When he arrives in this "future" he finds himself in a completely ...
15
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3answers
760 views

Short story where a character moves through dimensions via mental exercises

It's been about 25 years since I read a story in an anthology. The only details I remember from it are that a guy is told that if, while walking down a road (or something similar), he mentally forces ...
15
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3answers
662 views

Female protagonist that is sick in one reality and well in another

I read a few books in a series of novels with a female protagonist. She was either severely injured or very ill in 'our world', but she was able to travel to another dimension. They referred to the ...
14
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1answer
983 views

Why would Quinn wait to Slide to a new reality?

In Sliders, the first trip they make they slide away from earth before their timer counts down. This means they can't get back to Earth-1 directly. Later in the series they're faced with many, many ...
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1answer
1k views

Book - Man returns from Vietnam and opens portal to another world with his ham radio

If I remember correctly, a guy comes home from Vietnam and starts playing with his ham radio and somehow creates a portal to another Earth. Then I remember a jump in time. Now, it's our time and ...
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4answers
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Why are the two universes in Fringe not more divergent?

related: Why are there only 2 universes that are visitable? It seems that there are differences in the universes dating back to the 1930s Zeppelin flight was effectively finished in the USA by the ...
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2answers
385 views

A audio book about two children and an apprentice wizard?

I remember back when I was a child (late nineties), I listened to some audiotapes. One of them was story about two children, and a wizard who accidentally teleports into them when he is trying to pass ...
14
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1answer
874 views

Who replaced Worf Prime?

In "Parallels", our Worf finds himself uncontrollably shifting into alternate "quantum" realities, one after the other. Eventually, the crew of various alt-Enterprises succeed in locating the prime "...
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2answers
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Name and author of Novel about Reptilian overlords

Novel about a parallel world where the dominant species is reptilian. Some humans (or a human?) are captured and their way of life is threatened. Very severe race with different clans at war with each ...
13
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2answers
862 views

What is the title of a story about a elevator through time and the smallest possible change [duplicate]

Many years ago I read a story about a guy working for an organisation that would influence time-lines by traveling through time using a sort of elevator. The objective of the operators was to ...
13
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1answer
462 views

A web comic where a woman in a hoodie asks what universe she is in?

Some years back I read a beautifully illustrated fantasy web comic, rather surreal. All I remember is a woman in a hoodie stumbling into some alternate world. She zipped up her hoodie to obscure her ...
13
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1answer
440 views

Help Identifying an Alternative History Novel

I read a novel when I was 12 or 13 (late 80's, early 90's) about two timelines combining on Earth. It was a full length novel for adults that I swiped from my mom (she doesn't rememeber it at all.) ...
13
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1answer
928 views

Please help identify parallel universe novel

Years ago (late 70's/early 80's) I read a science fiction story which I think was a novel, though I'm not sure. In the story, there was a secret group that had developed technology for travelling ...
13
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1answer
251 views

Which was the first story featuring merging of alternative/parallel universes?

In Orguss (1983), a space-time oscillation bomb explodes, and as a result, several dimensions are merged into one, having Earth inhabited by different races. Reading on the internet, I found about ...
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0answers
206 views

Book where a soldier is transported to an alternative Earth during the Battle of Verdun (WW1)

This is a long-shot as I remember very little about the book. It may not even have been written in English, but in Dutch. I read this in the first half of the 1980's. Got it from my school library. ...
12
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3answers
375 views

What was the earliest SF work that used the idea of the “Multiverse”?

The discussion below this question leads me to ask: What was the earliest SF work that used the idea of the Multiverse (parallel universes or alternate worlds)? I'm looking for fairly hard SF ...
12
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1answer
2k views

How come an older Jadzia Dax appears in DS9 ‘The Visitor’?

A UK TV channel has been re-running this here and have just shown an episode, The Visitor, where Sisko meets a much-older Jake. Not the most gripping episode, but the future includes an older and ...
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1answer
1k views

Children's book with “square triangles” in parallel universe?

In the 1960s I read book--an older children's book, I think--which I loved, and still remember, roughly. I have no idea what the title is or who the author is, and I'm wondering if anyone knows this ...
12
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1answer
935 views

What novel has advanced alternate Earth humans trying to escape through portals from horrific inter-dimensional creatures?

I read this book while on vacation in Canada around 1985. The book seemed to be a recent release and consist of about 50/50 narrative and character action and was short, about 250 pages or so. The ...
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2answers
5k views

90's TV series where a boy goes to another dimension through portal near power lines

I am desperately trying to remember a name of a TV series probably from 90's. I remember these points: A boy goes to another dimension through a portal near a power lines. This dimension has a sort ...
11
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2answers
2k views

Identifying a story about a boy who travels to a mirrored universe with ketchup that makes you intoxicated [duplicate]

There was a novel I read back in the day about a boy who travels back and forth between a mirror-image of our universe. I am afraid I cannot recall much about the plot, except that mirrored food is ...
11
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1answer
740 views

How many “universes” are there in Star Trek canon?

I just finished watching Star Trek:TOS. There were at least two episodes dealing with other dimensions, the mirror universe and the anti-matter universe. How many "universes" are there in Star Trek ...
11
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2answers
369 views

Looking for a book about a drug that causes habitual users to cross to another world that has an extra color

I've been trying to find a book that I read in the early 90's, but that judging from the cover was published in the late 60's/early 70's about a drug epidemic that was actually backed by the UN ...
11
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1answer
252 views

Looking for a book with parallel universes like pages, possibly with “maze” in title, and a black Jewish female character

Looking for a book. A series, actually. The main characters were a Jewish man and a black woman who was his wife. There was a running gag when she would tell people her last name and they thought it ...
11
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2answers
525 views

Is there any evidence that using alternate universe/timeline in a franchise hurts/helps it?

Background: There is a widespread approach in sci-fi/fantasy franchises to use alternate timelines/parallel universes as a technique/device to continue/extend/expand the franchise. Notable examples I ...
11
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0answers
260 views

Book with parallel universes being taken over by an evil presence

It would have been published around 2012. It's about a guy taking a girl with him to parallel universes. The universes are empty/dangerous because there is an evil presence there; something like big ...
10
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2answers
899 views

Book: Gen-manipulated intelligent squids explore space/planet

I'm looking for the author and title of a book. I believe it's (supposed to be) the first in a trilogy, all using the same characters, but taking place in different universes - with only humans, with ...
10
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4answers
848 views

Are all worlds at the same point in time?

In His Dark Materials, Lyra comes from a world where Catholicism and Protestantism apparently merged into one mega church that continues to exert great control over all aspects of life even into the ...
10
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1answer
409 views

Looking for a sci-fi collection book 2000 to 2010 containing two specific stories

First, the cover has a purple alien riding a motorbike down a road at night. As I recall it's sort of squid like, and wearing biker clothes. The two stories are: Three friends discover a device ...
10
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1answer
185 views

Book where a group of teenagers travel to a fantasy world

15 to 20 years ago I read a book (a trilogy I think) about a group on teenagers from a world similar to ours, who traveled to a fantasy world. I don't remember much about these books, just some ...
10
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1answer
482 views

Looking for name and author of a science fiction book about alternate worlds or timelines [duplicate]

I read this book a couple of years ago and can't remember the name or the author (also not sure if it was just one book or series - if it was more than one book then it would be 2 or at most 3 books) ...