Regarding travel forwards or backwards in time, outside of normal temporal constraints, and the implications and repercussions thereof.

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7
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1answer
112 views

Space ship manned by only AI returns home to a different earth, back in time

I read this short story 30 years or more ago. A space ship is returning home to Earth from a battle. There are no people on board this ship, only an AI and the ship's computer. When the ship tries to ...
1
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0answers
67 views

How is the Thomas Granger coma/“recursive” problem in Primer caused by a paradox?

In the movie, Thomas Granger gets knocked out simply by getting too close to Aaron. The narrator then states that the problem was "recursive"; also, some viewer explanations state that Granger falls ...
-3
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0answers
79 views

Terminator(Genisys) - origin of old T-800 [closed]

So we are getting another Terminator movie that is continuing the franchise ...
-4
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0answers
68 views

Time Travel in the past impossible? [closed]

If someone was to time travel back in time in order to change an event, if they changed that event the way that they wished then why would they go back in time in order to change the event in the ...
1
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0answers
71 views

Somewhere in Time - Who is this character?

In the time-travel romance movie "Somewhere in Time", a young playwright from 1972 uses an old pocket-watch to mystically travel back to 1912 and meet an actress he has fallen in love with from old ...
5
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8answers
1k views

How does the time loop in Predestination get initialized?

In Predestination starring Ethan Hawke, the idea is plain and simple. However, I do find something very hard to digest: How could the loop about Ethan Hawke the time travel agent, could meet himself ...
3
votes
0answers
87 views

Looking for an older book about a team of time travellers operating outside light cone

I remember reading an older sci-fi book (maybe 50s-60s?) about a professional team of time travellers which operated outside the light cone to avoid breaking causality. Their purpose is to travel to ...
12
votes
1answer
794 views

Looking for a time travel fantasy/scifi novel from the late 80s/Early 90s

Ok, I remember borrowing this book from a friend back in 1993. I seem to recall the name being The Inept Adept, but I can't find anything related to this name except a piece from the 2000s that ...
21
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3answers
3k views

Movie about a teenager discovering time travel

I remember watching a movie quite a few years ago, where a teenager in high school was trying to find out about possibilities of time travel. I think towards the end he did manage it, but it was ...
10
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1answer
1k views

Looking for a found footage time travel film

I recall seeing a trailer for a film a while back, sometime in the last 2 years, and was wondering which film it was for. I recall it being a found footage-style film, that centered on a group of ...
7
votes
1answer
93 views

Seeking a story about a time-traveler living backwards in a capsule

I'm hunting for the title of a short story where a senile old man appears in a capsule in a laboratory. They eventually realize time is passing backwards for him. After years he helps them build the ...
2
votes
1answer
63 views

Trying to remember a Tandy CoCo 2 point-and-click adventure game involving time travel within a museum

I have horribly vague memories of this, but lasting ones. I played it on a Radio Shack Tandy Color Computer 2 (maybe the CoCo 3, but I think it was the CoCo 2). It was a point-and-click adventure ...
9
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1answer
474 views

Movie ID: 50s/60s time travel film with *terrible* plot holes

Back in the eighties I saw an apparently sixties-era film on afternoon UHF TV. In it a crew of men and women were on board a time-travelling vessel. I think it was not a ship, more of a stationary ...
7
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0answers
101 views

Story ID: What novel had a time travel car and dinosaurs?

I am trying to remember the title of a science fiction novel about a man who has a car that can travel back in time, and he can park it about 10 seconds ahead, so no one but him can see it. He ...
9
votes
2answers
290 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 ...
1
vote
1answer
145 views

How difficult was it to apply for time-turners?

As far as we know from the books (I haven't been on Pottermore or seen any of JKR's interviews) Hermoine is the only witch or wizard to have legally used a time-turner. So how does the application ...
2
votes
1answer
162 views

Identify short story about modern soldiers time travel to a civil war battle, ethical dilemma, shoul they intervene?

I read this story in the 1960's or 1970's. A platoon of modern soldiers accidentally time travel into the midst of a crucial civil war battle. They have their modern weapons in their possession. They ...
9
votes
1answer
247 views

Movie about a man and a woman accelerated in time. The rest of the world was suspended in time

This is a movie I saw on TV in the mid to late sixties, so I’m not sure if it was a made for TV movie or if it was out in theater in the late 50’s or early 60’s. I only remember bits and pieces of ...
5
votes
1answer
125 views

What's the nature of Eternity?

In the first part of "End of Eternity" it seems like Eternity is off in a separate plane of reality, disconnected from time. But then later it explains how each section was duplicated for each ...
10
votes
1answer
366 views

Story About Time Travel Using a Gate on the Sun

When I was in high school (6 or 7 years ago), one of the short stories that we read out of the text book had to do with an alien civilization that had discovered time travel. They had managed to ...
1
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1answer
57 views

What determines whether or not a timeline is “Doomed”?

In recent Homestuck updates, Terezi posed the possibility that she, Roxy, and John were all stuck within a doomed timeline; one that would eventually peter out into nothingness and from which no true ...
0
votes
3answers
182 views

Looking for a book featuring a soldier/marine travelling to a different time/universe

I picked up a book a year ago and read the summary at the back(part of a series maybe?) at a airport bookshop but had to stop because of my flight was about to depart. I can't remember the author or ...
8
votes
2answers
525 views

Why was there apparently no knowledge of the missing ship in the Typhon Expanse?

In the TNG episode "Cause and Effect", we are treated to the following line of dialogue...three times. "Captain's Log, Stardate 45652.1. The Enterprise has entered an area of space known as the ...
6
votes
2answers
253 views

In ST Voyager, why do they keep & use technology from the future?

Mainly the doctor's mobile emitter - they obviously have some rules about not disturbing the timeline via the temporal time directive by leaving advanced technology in the past, so why would they on ...
7
votes
2answers
317 views

Short story involving time travel

I read a short story about 25 years ago in an anthology (it might have been Hugo nominated stories or some such). The story is about a failed author who is visited by a man from the future who ...
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2answers
179 views

Can Time Travel (back to the future style) ever be possible without creating a paradox? [closed]

On each occasion that Marty and the Doc (and Biff) travel back in time they end up creating a brand new timeline. Marty makes some effort to repair it in BTTF1 but there are still notable differences. ...
11
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4answers
819 views

If the Federation has effective time travel, why don't they use it to correct major problems in the past?

In Star Trek IV: The Voyage Home, we see Kirk and his crew can perform fairly accurate time travel via the light-speed breakaway factor. Is there any reason they don't use this technique more ...
4
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1answer
162 views

Short story where a moved book in a library changes time

Caution, this one is a little complicated... My girlfriend is searching for a book her father read long time ago. Here are the snippets I'm aware of: The story was in a book containing multiple ...
13
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0answers
246 views

Seeking story about time travel used to steal from the future

I'm looking for a short story that I read in an anthology. In it, I think the theory was that you could time travel, but could never take anything that would be missed. As in, if you went to the ...
11
votes
1answer
1k views

Asimov short story about nuke going off in 1945

This story is about someone from the future ensuring the first atomic bomb is set off in 1945 so that the "future" would be one in which Earth would be the only source of intelligence in the galaxy. ...
2
votes
1answer
127 views

Book about an industrialist that finds an animal in space that creates portals

I am looking for a sci-fi book I read in the late 80's or early 90's dealing with a a rich space industrialist that finds an animal in space that, when stimulated, creates propulsion. Later in the ...
-3
votes
1answer
326 views

Harry Potter Time Turner question: how is murdering past or future selves possible? Is it possible to prevent someone from dying [duplicate]

In Harry Potter, it seems like Time Turners are mostly used to correct minor things or do things that wouldn't have any major effect. Also, in Prisoner of Azkaban, it seems like Time-Turners/time ...
9
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2answers
2k views

What's that movie where the character travels back in time by his mind?

I watched a movie back when I was a kid, I would say during the 80's maybe early 90's. This movie was about a character who succeeded in time traveling by just thinking of it. At the end of the movie, ...
5
votes
1answer
141 views

How did Kate & Leopold solve their money problems without L. marrying for money as he had been expected to?

In the 2001 move Kate & Leopold, before the time travel from 1876, Leopold is being forced to marry some rich American as the family fortune is depleted. In the end he announces that he plans to ...
0
votes
1answer
144 views

How did the displaced persons know how to carry on once Sam Beckett jumped out of their bodies? [duplicate]

In Quantum Leap, Sam Beckett switched into other peoples bodies and changed, or restored, or ensured history that was guided to the history as it was known in Sam's own timeline. These people seemed ...
0
votes
1answer
353 views

How is Doc still alive if he was shot back in 1885?

In Back to the Future: Part III, we see the grave of Doc. If Doc. Emmet L. Brown is dead and has a grave, then how come he is still alive and kicking in 1885? If he is alive because Marty went back ...
3
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0answers
84 views

Book about time travel to the Eruption of Vesuvius era

I read this amazing book about time travel, where people seems to randomly travel back in time where: Main protagonists appear in or near Pompeii with memory loss. The book ends with the Eruption of ...
5
votes
2answers
166 views

Looking for a book - Time Travel and Alternate Time Lines

I know this is a long shot but I'm looking for the name of a book I read when I was younger (early 70's). From what I recall, the main story was a bunch of soldiers got picked up by a time traveling ...
11
votes
1answer
292 views

What's the title of this temporal loop short film?

I remember seeing, years ago, a short film about a guy who gets stuck in a time loop and is forced to relive the same few minutes of his life over and over. In one iteration, he talks to his ...
15
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4answers
2k views

What paradox is this scenario?

I've been thinking about various time-travel related paradoxes, and have wondered what the name of the paradox is where something doesn't have a cause. Take the following example: Let's say there is ...
3
votes
1answer
316 views

What coherent fictional time travel theories exist? [closed]

(TLDR - first two paragraphs.) I have been nurturing a pet theory for a few years now on time travel theories in fiction. My pet theory is, there are only two basic theories for how backward or ...
3
votes
2answers
232 views

Superman time-travels to red Sun age

I have a rather vague recollection of this comic book. I believe I read this in early 70's. Superman time-travels back to the time when the Sun is a red star. The Earth is (rather strangely) inhabited ...
1
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1answer
210 views

Identify a story about a group of time-travelers

I remember reading the article in Wikipedia years back, but I never bookmarked it, and now I'd like to read the story/novel. It was about a group of people who live in another place/dimension, and who ...
3
votes
0answers
124 views

Stories involving Time Travel and Disease Immunity? [closed]

When Europeans came in large numbers to the New World, the sicknesses they carried caused pandemics for Native Americans and wiped out much of the population. I would imagine that if a time traveller ...
23
votes
3answers
5k views

Why is the “Arnold Schwarzenegger” terminator referred to by two different product numbers (T-101, T-800)?

In the original film, The Terminator, Schwarzenegger's character was a "Cyberdyne Systems Model 101". Likewise for Terminator 2 & 3. However, in the video game adaptation of Terminator 3, this ...
3
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1answer
946 views

Why does the number “99” appear (backwards, spelled in airborn fire) in Back To The Future part 2?

It seems to be a commonly accepted theory that the car skidded before going back to 1855. However, the car didn't really seem to skid, so much as explode. It certainly didn't appear to move in such a ...
2
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1answer
269 views

Time travel to WWII to try to change the course of the war

I'm looking for a book that is at least 20 years old. A group of people travel back in time to WWII. They try to change the course of the war and ultimately succeed, however in the end it is revealed ...
4
votes
1answer
1k views

What was the role of Shadow Proclamation in The Time War?

I have watched only the post 2005 episodes. The Shadow Proclamation is the highest authority in the entire universe. I mean they are the Police guys and law-keepers. I had a doubt if any other ...
3
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0answers
112 views

Time Travel Series 60-70s 3-4 books - Time machine appears on the lawn at a university

trying to find a old series, cannot find anything by goggling front covers for time-travel novel. Main character gets in a timemachine and goes forward, watching the rise and fall of at least 2 more ...
1
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3answers
368 views

How does Claire travel through the standing stones in Outlander?

In Outlander the book by Diana Gabaldon, I recall (although it has been several years) Claire falling into the stones and accidentally back in time. In the new television adaptation, however, the ...