Questions tagged [time-travel]

For use on questions regarding travel forwards or backwards (or both!) in time. This tag should be used in conjunction with the universe it is found in. Can also be used to signify that the question contains time travel when asking in relation to an identification question: [story-identification], [episode-identification], [character-identification] and [object-identification].

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12 votes
1 answer
329 views

Series of books/novellas, involving a depopulated Earth, mass infertility, a religious cult, time travel, and Amazon warriors

There was a series of books/novellas in the '70s or so, involving a very depopulated Earth due to a chemical/drug error that made all females who lived in modern society infertile. A prophet had ...
6 votes
4 answers
2k views

Did anybody in the Star Trek universe temporarily travel to the future?

A recurring theme in Star Trek is time travel. E.g. in Star Trek: Picard, Season 2, when traveling back to the 21st century, Star Trek: First Contact, Star Trek: The Voyage Home, Janeway returning in ...
4 votes
1 answer
123 views

Has the Slingshot Effect ever failed?

It's mentioned that time travel using the gravitational slingshot effect is highly dangerous, but typically reckless Kirk uses it successfully at least four times (including twice with a captured non-...
10 votes
1 answer
271 views

A movie about travelling to the future, where a man see the earth "start" again?

I can't remember the name of this movie I saw when I was a kid. All I can remember was that the man travelled through time every few years ahead,never coming back, one of the years the moon is quite ...
13 votes
3 answers
3k views

A book series about an engineer sent back in time to medieval times

I am trying to remember a book series where the main character, a male engineer, is sent back in time to medieval Europe (it is a historical setting with no magic) and applies his knowledge, in the ...
15 votes
4 answers
4k views

What's the earliest point in human civilisation that anyone has time-travelled back to, in Star Trek?

In Star Trek, time-travel is very common. But I’m only interested in travel to Earth’s past when it also hosted humans (Q transporting Picard to Earth when life was originating won’t be counted). Some ...
12 votes
6 answers
797 views

Timeslides: Why didn't Rimmer disappear?

In the Red Dwarf episode, Timeslides (s3e5), Dave Lister changes his personal timeline so that he was never gets stranded on Red Dwarf. It's explained that this means they never rescued Kryten and the ...
6 votes
0 answers
161 views

First use of backwards time travel in fiction?

The First use of time travel in fiction question resulted in forwards time-travel as the accepted answer. So now I'm wondering about backwards time travel. This answer from that question, which I ...
24 votes
5 answers
6k views

First use of time travel in fiction

Where was the first literary appearance of time travel? I know H.G. Wells coined the term "time machine", and according to wikipedia he popularized the concept of time travel. Since they don't give ...
2 votes
0 answers
171 views

Book about organization who can erase time

Has anyone heard about a book where there’s an organization that can erase people or time streams and one of the guys involved falls in love with someone he’s suppose to erase?
0 votes
1 answer
102 views

How were the 2014 Gamora and OG Nebula able to travel to the present in Avengers: Endgame? [duplicate]

How were the 2014 Gamora and OG Nebula able to travel to the present? From the movie, we know that for you need two thing for time travel: Pym particles and Time-Space GPS or the Time Gateway (like ...
9 votes
2 answers
359 views

Short story with character living life in non-sequential segments

Years ago I read a story with a character who experiences their life in segments different than the normal time line, e.g. his first memories might be flailing around like a baby in an adult body and ...
6 votes
0 answers
77 views

Comic book with time machine inventor murdered by his own assistant

This story was from a comic book I read somewhere around the mid-'60s. It was a normal-sized thin comic book, not one of the thicker "special issue" types. I believe it had several ...
17 votes
1 answer
5k views

Isaac Newton is visited by a time traveller who tries to give him a calculator

This recent question about a time traveller who visits Newton reminded me of this short story, which I think I read in Omni in the early 1980's. A man travels back in time, hoping to spare Isaac ...
15 votes
1 answer
423 views

Movie about time traveler staying for a fixed time [duplicate]

Years ago I watched a movie about a time traveler arriving at Earth, picking someone, and bringing them back to his own time. I have searched and searched for the movie, but can't find it. What I ...
26 votes
1 answer
1k views

Time travel short story about a man from a multi-racial future who is killed when he goes back to a racist past?

A friend of mine had an Amazing Tales-type anthology back in the mid-80's with this story. A traveller is sent back to an earlier time (early 20th century America?). He reveals innocently that he's &...
8 votes
1 answer
279 views

Manga about a stream of time which kills people who are immortal

So I read this manga years ago, back around 2009/10? The main character, a girl who's a student gets whisked away by something, from what I remember it's a river of time. She's in the future(?) and ...
10 votes
1 answer
188 views

A story where the female main character commits suicide in order to avoid torture but gets sent back in time

This is a novel that has a manga adaptation, and I read the first few chapters of the manga a few months ago, back in February. It was in full colour, I think. The main character is accused of ...
56 votes
7 answers
31k views

Back To The Future Flaw - why don't Marty's parents recognize him in the new future?

I believe I've spotted a flaw, and I'd like to know if other fans have noticed it too. In the first BTTF, Marty McFly travels back to 1955 (his parents' high school era). He meets his mother and she ...
4 votes
0 answers
144 views

What are the limits to meeting your self in the past?

In DC's Legends of Tomorrow, it was said in one of the episodes (I can't remember or find the correct episode) by Rip that making contact with your younger self can jeopardize your entire existence. ...
5 votes
1 answer
97 views

An older time traveling manga about a girl who becomes a warrior after she travels back in time?

The manga is about a girl who travels back in time, the first and like second chapter is when she is still in the modern world. She falls in love with her brother (I think it was because they didn't ...
3 votes
1 answer
60 views

Manhwa with a pink-haired female wizard/mage and a blue-haired male lead, who fall in love and accidentally end up back in time

I need help finding a manhwa. I can’t remember much, but the main character (MC) is a wizard/mage who eventually somehow gets paired up with the blue-haired male lead, and they start working together. ...
8 votes
1 answer
1k views

Time travel story from textbook where a boy explores possible futures

I think this would have been in one of my textbooks around 1990 or so, 4th to 5th grade material in Kentucky. A boy gains access to a time machine of the "visit your future self's body" sort. I ...
18 votes
2 answers
391 views

Time traveler tells historical figures of their importance just before death

I'm trying to remember / find a short story (a few pages, if that) about a time traveler (possibly rogue(?)) who meets important historical figures just before their death and informs them of the ...
2 votes
1 answer
146 views

Why is this act supposed to be a final success for the future antagonists?

(All-spoiler question) In the 2020 film Tenet, arms dealer Sator is instructed to bury the "algorithm" by means of a cave in at Stalsk 12, and his success in doing this somehow ensures ...
18 votes
1 answer
2k views

Continuity error in A Door into Summer - or very subtle clue

In Heinlein's The Door into Summer Dan is in 2000, trying to find someone he knew before he was involuntarily put into cold sleep in 1970, but he doesn't know what last name she would be using, and ...
11 votes
0 answers
100 views

Science fiction short story about an old man who builds a time machine to tell his deceased father goodbye before he himself dies

From a Reddit discussion several years ago concerning the most creative use of time travel, a user named punkwalrus posted the following: A short story from a SF&F literary magazine long out of ...
10 votes
1 answer
3k views

Short story about an astronaut who keeps meeting a version of himself from a different time, possibly by Isaac Asimov

I can't remember the details very clearly because I read it many years ago, but he needs to fix his stuff. He has a repeating day, I think, and keeps meeting a version of himself from a different time....
5 votes
3 answers
2k views

Why is the anomaly visible in the ending of "All Good Things"

Towards the end of All Good Things when Picard convinces his crew to return to the scene of the anomaly: His point is that if he was right, then it would just be forming and they could stop it. When ...
4 votes
1 answer
135 views

Name of book about faxing people

I have been trying to identify a book that I read years ago. It is about time travel and involved “faxing” people. The Nazis were trying to perfect this in World War II. However, people were caught ...
3 votes
1 answer
257 views

In The Librarians why didn't this event in season 4 change the present?

In season 2 episode 10 when they're in the time machine room, Flynn says: All their owners tried to change history and got caught in temporal loops because you can never ever ever violate causality....
1 vote
1 answer
64 views

Where is the temporal zone located of DC's Legends of Tomorrow?

In DC's Legends of Tomorrow, the place which seems to be the 'neutral' place of time is where the legends tend to set the Waverider in when they are not somewhere on a mission. Where is this located ...
6 votes
5 answers
362 views

Do non-Starfleet communicators also have Prescient Routing Tech?

Followup to: Why is there no combadge lag on initiating inter-personnel comms? Many misunderstood the previous question, so I'll try to rephrase it. Sometimes we see Riker's perspective: his badge ...
12 votes
1 answer
667 views

Science fiction short story about children on a beach stranded in time in perpetual twilight

I read this in a sci-fi magazine in the late 1970s/early 1980s, though it might have been published earlier. The protagonist is an artist who accidentally wanders onto a beach stranded in time that ...
3 votes
1 answer
154 views

Main character is killed and he awakens a system to kill [duplicate]

I am trying to remember a story the main character is a guy who thought he had a chance with a girl, until he was killed and sent a couple hours into the past where he awakens a system. The images ...
8 votes
1 answer
1k views

Steampunk-heavy TV series which had time travel. BBC, maybe?

Several years ago, which was 2012-2014, I got into steampunk. I got to looking for TV shows with that campy, pulp-adventuring feel. When I asked on Reddit, and also googled for some to watch. ...
0 votes
2 answers
165 views

Where is Marty from the alternate timeline Where George McFly is an author that Marty makes at the end of Part 1?

Think about it: Marty goes back to 1955 in Part 1 and helps his parents fall in love again. Well, when Marty went back to 1985 he created an alternate timeline where his parents are rich. There are ...
33 votes
1 answer
5k views

What were the 17 instances of Kirk traveling through time?

In the Star Trek: Deep Space Nine episode "Trials and Tribble-ations," we meet the agency of Temporal Investigations. They mention that Captain Kirk has traveled through time on at least seventeen ...
4 votes
1 answer
130 views

Identify a story about bald, three-fingered future humans

In the 1980s or early 1990s I read a gamebook (probably from the Choose Your Own Adventure series, but possibly a different one) in which the protagonist travels forward in time. In the Earth of the ...
6 votes
1 answer
340 views

trying to identify SF anime film shown on British TV in 1980s or '90s [duplicate]

I've been trying for years to identify a full-length SF anime film which was shown on British TV two or three times in quick succession in the late 1980s or 1990s. I'm 90% sure it was Japanese, ...
5 votes
1 answer
3k views

Name of movie involving time travel with a ruby ring?

I'm looking for the name of a movie that aired on TV I think in the early 2000's. From what I remember of the plot it involved a young woman who traveled back in time (i think to the 1800's) by a ruby ...
9 votes
2 answers
8k views

Is there any evidence that Whiterose's machine was real?

In Mr. Robot, Chinese Minister Zhang, aka Whiterose, has at great expense and effort over the course of decades constructed some sort of machine in New Jersey. The interior looks science-fiction-y the ...
10 votes
0 answers
276 views

Protagonist used a time machine and was "punished" with physical deformities

I encountered this science fiction novel in the early 90s (1998 at the latest) but I only got to read the first few chapters of the novel and I have gone crazy looking for it ever since. The story ...
12 votes
1 answer
469 views

Story about a time traveler saving the Library of Alexandria

I am trying to remember the name of a book (or maybe a short story, I can't think of enough to flesh it out to novel length.) I don't recall when I read it but its probably at least 30+ years ago. The ...
10 votes
0 answers
129 views

Story in which time travel has similar effect on society as alternate histories have in Niven's "All the Myriad Ways"

I read this story in an anthology I think in the 1970s or 1980s - in it, the government has (and is known to have) the ability to use time travel to "undo" disasters. The protagonist is a ...
8 votes
1 answer
576 views

Short story about inept "scientists" building a time machine and real ones cleaning up after them [duplicate]

I read this about 30 years ago but I can't remember what it is named. In the future, a few "real" scientists still exist in semi-secrecy. A lot of inept people believe that they are ...
36 votes
16 answers
19k views

What happens to the second Marty at the end of Back to the Future?

In Back to the Future (the original movie), Marty comes back from 1955 10 mins early to prevent Doc from being shot (which he fails at). He then rolls up to the Lone Pine Mall and sees himself hit 88 ...
6 votes
1 answer
279 views

Girl sent back in time by a flying monster to save a boy's life, with an agreement that she'll prevent him falling in love with her

I am looking for a manga, but I can't remember the name. A shy high school girl falls in love with a solitary/delinquent boy in the same class as her. They dated for several years but the boy is then ...
14 votes
1 answer
176 views

Book: time travel likened to swimming

People can become beings who can travel through time by inserting a temporal segment of themselves into a kind of suit which allows them to "swim" "above" the surface of the "...
15 votes
5 answers
2k views

Old short story about time travel: not physical, just as onlookers

I’m trying to find a science fiction short story I read in the late 70s/early 80s, possibly in an older anthology: it was likely written in the 50s or 60s. It’s about time travel and its limits: ...

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