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

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1answer
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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
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1answer
99 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
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1answer
207 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
120 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
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1answer
115 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
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1answer
225 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
70 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
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2answers
124 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 ...
10
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1answer
226 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 ...
14
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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
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1answer
143 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
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2answers
190 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
vote
1answer
183 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
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0answers
95 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
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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
284 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 ...
1
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1answer
208 views

Time travel to WWII

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 ...
3
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
votes
0answers
102 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
215 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 ...
3
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1answer
110 views

Help ID a trapped in time comic

I'm trying to find an old comic I once read. Details:The story involves a group of scientists that are tossed back in time to the 1800's. They have no way of getting back. I think they tried to make ...
4
votes
1answer
193 views

How many alternate Star Trek timelines have been presented to us onscreen in the Franchise?

If parallel universes are included as alternate timelines, how many alternate Star Trek timelines have been presented to us onscreen in the Franchise? For the sake of clarification, Tomorrow is ...
1
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2answers
148 views

Looking for a book I read from mid to late 90's about humans as aliens

There were humans on Earth but these two specific humans were from another planet. They were lovers from a long time ago, possibly thousands of years ago. They would lose each other periodically and ...
10
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2answers
261 views

How does time travel work in Babylon 5?

I've recently watched Season 3's War Without End, Parts 1 and 2 (spoilers about that episode in this question) and while I enjoyed it, I became confused about how time travel is supposed to work in ...
1
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1answer
168 views

How does the Doctor keep track of his age? [duplicate]

Throughout the Dr. Who series, the doctors have claimed to be hundreds, even thousands of years old, (the tenth and eleventh both claim to be around 900, but throughout the series, eleven jumps into ...
5
votes
1answer
275 views

Old old science fiction story

I'm looking to find an old science fiction story that I read in an anthology many years ago (probably in the 60s) called 'What Time Is It?' It's about a group of high-school or college age boys that ...
42
votes
7answers
9k views

Why didn't Hermione use the Time-Turner to sleep more?

Hermione has the Time-Turner in Prisoner of Azkaban and uses it all year to take extra classes. Many times in the book she's exhausted and barely managing all of her studies. What I never understood ...
7
votes
1answer
165 views

Book where a woman with martial arts skills goes back to king Arthur's time

I'm looking for the title of a book which I read in 2001 in Australia. I had to leave it there when I returned to Germany. The story details are as follows: A young, relatively small woman is ...
3
votes
3answers
617 views

Why didn't Snape think of the Time-Turner?

During Prisoner of Azkaban, Harry and Hermione use the Time-Turner to save Buckbean and Sirius. Snape suspects Harry was involved in Sirius’s disappearance. To calm Snape, Dumbledore points out that ...
4
votes
1answer
201 views

Can you identify this time travel book series?

read a book series in 2009, can not remember the title of the book nor who wrote it. i remember it started with two males driving at night through the country, they pull over and walk into a paddock, ...
19
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2answers
2k views

Why didn't they use the invisibility cloak while on time travel?

In The Prisoner of Azkaban movie Harry and Hermione used Time-Turner to save Sirius. After advising them to use Time-Turner Dumbledore remind them "you must not be seen". If it was a vital law to use ...
6
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3answers
271 views

Book about a time-traveling dinosaur hunter

I read a book back in the late 70's and here's what I remember: There were a group of people who 'bought a tour' to time travel back to the dinosaur era. They travel on a disc shaped platform. There ...
3
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1answer
151 views

Fiction novel involving time traveling dinosaurs that then destroy humanity

I am trying to recall the title a fiction novel that involves a race of sentient dinosaurs that travel from the past into the future to when humanity is living underground, possibly due to apocalyptic ...
5
votes
1answer
175 views

Trying to find title of book about feline man who ride large cats

Looking for a series of books about an old man who starts out on a yacht but something happens and he wakes up in the body of a young feline-like man. He also has a telepathic link to a large cat ...
4
votes
1answer
394 views

Identify time travel story. Modern soldier goes back to days of mounted Knights with scientists

Read this sometime in the 80's(actually read it after 1999). A mission from an intricate lab (in the present(?)) back to Medieval times went awry when a soldier took back live munitions, specifically ...
4
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0answers
172 views

What happens if a person dies while using H.G Wells' time machine?

In the Warehouse 13 universe, Helena G.Wells' "Time Machine" works by creating a mental link to a person in the past. What would happen if the person whose body the user hijacks (for 22 hours and ...
-3
votes
1answer
143 views

What is the appropiate way to use money in the past? [closed]

Assuming time travelling is possible and there are no fancy regulations, what would be the best way to take this time's money with me to buy things in some time/place in the past? I'm asking this ...
2
votes
1answer
88 views

Brother-sister pair time travel to resolve 1962 Cuban Missile Crisis

Story ID requested: There's a post-nuclear Earth c. 2060 in which the 1962 Cuban Missile Crisis escalated all the way. A brother and sister are sent back to keep that from happening. They succeed, ...
2
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4answers
2k views

Book in which children traveled between worlds with colored rings?

I read a book at some point in school in which children travelled between worlds with colored rings, I don't know why, but I have always remembered this and am very curious as to the name of her book, ...
2
votes
1answer
154 views

Why did Hila Tacorien end up in a pocket universe?

Hila Tacorien, the human time traveler from the Doctor Who series 7 episode Hide, was trapped in a "parallel pocket universe" as a result of attempting to travel in time, and is described as a ...
3
votes
1answer
166 views

Trying to find title of book - Scifi - Wormhole with time distortion

The story was something along the lines of a wormhole was found and a "ship" or party was sent through, communication was lost a couple of weeks/months later. A second ship/party is sent and the book ...
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4answers
327 views

Has Batman ever time-traveled in any form?

Some of the main DC characters have time-traveled such as the Flash and Superman, has Batman in any serial ever traveled through time?
11
votes
1answer
3k views

How did Rita know she lost the power?

In Edge of Tomorrow, Emily Blunt's character, Rita Vrataski, had the time-resetting power previously. She details the backstory of how she gained it, and how she lost it. However, how did she know ...
4
votes
2answers
508 views

Story with a time-loop where a man sees someone who turns out to be himself

I read a short story in the late 70's or early 80's, but cannot remember the title or the author. In the story a man opens a door in either a house or room and sees someone in the distance. He goes ...
6
votes
1answer
168 views

Time travel book - Character connected with “Staten”?

This was a young adult book/s. There were a good four or five books in the series. The books are pretty short as it's easy reading. The main character is a girl. She accidentally time travels and ...
5
votes
1answer
135 views

Short Story involving Time Travel and an attempt to change Man's Nature

I want to say it was called something like 'Time Storm', but I haven't had any luck locating it. The main character was (I believe) caught up in some form of storm that somehow unseated him from ...
7
votes
1answer
231 views

YA book with a child going back in time; the title contains a date

I'm looking for a Young Adult science fiction book from in the 80's. It had a month and date in title, something like “Thursday the 5th of October”. A kid somehow goes back in time. He winds up with ...
5
votes
5answers
393 views

Searching for a short story about the crucifixion

My dad once mentioned that he had read short story that explained why there were no time travelers at Jesus' crucifixion. He said he had thought was by Orson Scott Card, but he never managed to find ...
3
votes
0answers
127 views

Book about a young girl who travels in time

This book is about a young girl who lives in a magical town near a sea or body of water where people have to go through a maze to travel to the outside world. She has an older male companion (an ...