A timeline is a paradox filled science fiction plot device consisting of a series of chronological events, each a link from the past that leads up to the present. Timelines are sometimes portrayed as being vulnerable to alteration and are often threatened by the actions of time travelers.

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824 views

When is Fahrenheit 451 set?

Is there an allocated time period in Ray Bradbury's novel? I'm not too sure if there is a timeline that led up to the events in the book, so the time in which it is set is unclear to me.
21
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2answers
2k views

How is Data alive in “All Good Things” when he died in Nemesis?

In the Star Trek TNG series finale, "All Good Things", Data is clearly alive and well while Picard is an old man. But Data is clearly destroyed in Star Trek: Nemesis, while Picard is still relatively ...
4
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3answers
285 views

Why did Daleks left Adelaide Brooke alive ( Fixed point in time issue )

In The Waters of Mars, it is shown that a Dalek left Adelaide Brooke unharmed when she was young during the events of The Stolen Earth, because she was a "fixed point in time" according to words of ...
2
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1answer
138 views

In Eureka Season 2, does Henry Deacon remember the circumstances of Kim Anderson's death?

In the Season 1 finale "One in a Lifetime" Jack Carter Upon resolving the timeline, Henry confronts Carter, knowing that he made the right decision but unable to accept it. They agree to erase ...
5
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1answer
321 views

What happens between the end of the last series and the 50th anniversary special? [duplicate]

Lots of spoilers, obviously. At the end of the last series, in The Name of the Doctor: Then in the 50th anniversary special The Day of the Doctor: How? What happened between these two episodes? ...
2
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2answers
208 views

In Primer, why aren’t there six Aarons?

At the end of Primer, we know that “Primer” gets locked in the attic, thus “Hooded” (and later “Earpiece”) wouldn’t be able to exist if — like in most on-screen time-travel — he needs to enter the ...
5
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2answers
509 views

Why isn't the Xindi referred to anywhere other than Enterprise?

The Xindi (multiple species in the sector) was shown only in Enterprise, what happens to them in the later timelines, why aren't there any mention of these species in other Star Trek Series since ...
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2answers
398 views

What was the point in the Silence trying to kill the Doctor when Clara saves him anyway?

The Silence set out to kill the doctor to prevent him from ever answering his name on the Trenzalore, as something bad would obviously quite happen there, hence the phrase 'Silence will Fall'. ...
4
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6answers
5k views

When does the Doctor actually tell River his name?

In The Name of the Doctor, we are technically seeing a saved version of River Song from the Library, meaning she's definitely dead. If this is so, where in the timeline does the Doctor tell her his ...
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0answers
23 views

In The Spirit Well, how could Wilhelmina not remember breaking Kit out of the tomb in Egypt?

In the middle of The Spirit Well by Stephen Lawhead, Wilhelmina meets Kit and doesn't remember saving him in Egypt. She does remember Giles. It is explained that she is at an earlier stage than the ...
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3answers
2k views

Was Kyle Reese always John Connor's father? [duplicate]

If Kyle Reese was always John Connor's father: Kyle pops out of nowhere, impregnates Sarah, dies, and then Kyle Reese is born, becomes a member of resistance and he is sent back in time. John Connor ...
5
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2answers
515 views

Why doesn't Cortexiphan kill William Bell in the Fringe Season four finale

In season 3 we learn that Cortexiphan is fatal for adults. Being as William had not had it as a kid, and the development of Cortexiphan was before the split in the timeline, how can William Bell take ...
5
votes
3answers
194 views

Annorax and the Krenim Weapon Ship

At the end of VOY:Year of Hell Part 2, you see Annorax with his wife and he is working on Temporal Incursion Calculations. Does this imply that a significant portion of the Delta Quadrant would be ...
7
votes
1answer
548 views

What year was the Time Lock established?

Is there any evidence to indicate when - what year by our Earthly reckoning - the Time Lock was put in place around the Time War between the Daleks and Time Lords?
6
votes
1answer
737 views

Is Star Trek set in our future, or is it an alternate universe? [closed]

If I recall correctly, the Eugenics Wars were supposed to have occurred in the 1990s and World War 3 is supposed to happen relatively early in the 21st century. Obviously, the Eugenics Wars did not ...
3
votes
1answer
228 views

Why can the wormhole aliens communicate with and learn from humans at all?

We know that the aliens living inside the wormhole adjacent to DS9 and Bajor (also known as "Prophets" by the Bajoran clergy) have no concept of linear time as we know it. That is, their conciousness ...
4
votes
2answers
261 views

Where does Artemis stand in the Star Trek timeline?

The multiplayer co-op game and Star Trek Bridge Simualator, Artemis, presents the players with the ability to roleplay their own scenarios with their own personal crew and ship. As such, the game ...
15
votes
1answer
744 views

Has Star Trek ever addressed why our timeline is different than theirs?

The Star Trek universe and ours are identical (as far as we know) until sometime between the 1960s and 1993. We know from Vic Fontaine and various references to Apollo that the 1960s happened very ...
3
votes
1answer
985 views

Was Harold Saxon the next Prime Minister after Harriet Jones?

So did the Doctor start the events leading to his capture by the Master, and the events of The Sound of Drums/Last of the Time Lords, when he caused Harriet Jones's resignation?
3
votes
1answer
326 views

How did time-travel work in The Philadelphia Experiment 2?

Time travel in The Philadelphia Experiment (1984) is kept simple, there is no "new" timeline created. Jim Parker goes forward and then back in time and David Herdeg is remembered by other crewmates as ...
3
votes
4answers
450 views

Will Spock warn of disasters in the new Star Trek universe? [closed]

Will Old Spock in the new timeline universe warn them of upcoming natural disasters? i.e. V'ger, the whale probe, Praxis and explosion, the Borg, violent first contacts, the wave from Generations, ...
15
votes
9answers
7k views

How does the Xenomorph evolution timeline work in the Alien/Predator universe?

I'm wanting to know how the timeline works in the Alien/Predator universe, specifically in relation to the Xenomorph's evolution. What I want to know is how this ties in with Alien Vs Predator? As ...
5
votes
2answers
235 views

Is Madame K dead?

I know Amy killed Madame K in The Wedding of River Song (Season 6 Episode 13). But that took place in an alternate timeline. On the hand, at the end of that episode Amy is drinking wine because she is ...
23
votes
3answers
3k views

Were there two Death Stars in construction at the same time?

The first Death Star was in construction at the end of Episode III (presumably 19 BBY). The ending shot is this picture, with only small portions of the superstructure completed: 19 years later, ...
11
votes
1answer
3k views

Why didn't River know what would happen to The Doctor at Lake Silencio?

I'm talking about the Season 6 finale "The Wedding of River Song", about this moment: I'm specifically talking about the moment (I won't bother with spoiler boxes from now, because this won't ...
18
votes
1answer
3k views

How long, in-universe, were each of the Star Wars movies?

Inspired by this question: Why Luke named his son Ben and not Obi-wan? Currently, the only answer there addresses the fact that the "names you first know someone by are hard to shake". However, ...
12
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2answers
954 views

Does time move slower inside Lothlorien?

I know I have read this somewhere and I wonder if it is correct. When the fellowship comes out of Lothlorien it is implied that, during the time it has taken for them to be in Lothlorien, a lot more ...
2
votes
3answers
671 views

How could our heroes & old Biff switch timeline while keeping Almanac with young Biff?

In Back to the Future 2, old Biff stole the time machine in 2015 and went back in time to give an Almanac to young Biff. At the point of giving the Almanac to young Biff in 1955, he altered the future ...
26
votes
5answers
49k views

What is the timeline for The Lord of the Rings trilogy?

The Lord of the Rings trilogy obviously covers a lot of time. How many months / years pass from the beginning of The Fellowship of the Ring until the end of The Return of the King? A timeline of ...
20
votes
3answers
691 views

When was Babylon 5 constructed, and how long did it take?

I've just recently started watching B5, and I'm near the end of season 2. One thing that's seemed strange to me is that all five Babylon stations were built in the decade following the Earth-Minbari ...