Questions tagged [back-to-the-future]

Back to the Future is the first film (1985) in a trilogy of time travel movies that branched out into an animated TV series, theme rides and video games. This tag can also be used to refer to the Back to the Future franchise as a whole.

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Back To The Future: Why should Marty fade at all?

Other threads have posed the existence of "meta-time" at right-angles to ordinary time, allowing for a single universe in which time can be changed, but resolving the paradoxes. On that basis, however,...
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Why is DeLorean cold upon arrival to a destination time? [duplicate]

What makes the time machine drop its surface temperature once it arrives to a destination time? Why is it so cold? Shouldn't it be all hot instead due to a 1.21 gigawatt energy influx?
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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 ...
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What happens when you don't enter a time in the time circuits?

The time circuits in the DeLorean have the capacity to enter times and dates. My question is then: if you were to enter a date and not a time, what time would you arrive at on the specified date?
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Does the BttF time travel require fuel/power?

After seeing this question about the time-travelling range of the DeLorean, the consensus was that it was merely restricted by the controls (a 4 digit number, giving it a range of 0-9999). However, ...
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Biff To The Future Time Travel Paradoxes

In the comic book series Biff to the Future, Doc Brown and Mr. Strickland go back in time, Doc to stop Biff’s parents from getting married and Strickland for reasons I can’t tell. Also, Biff goes to ...
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Had Doc Brown been looking for Marty all week?

During the opening scene of BttF, Doc calls his own lab to tell Marty about the experiment he wants to show him that night. From a transcript: Marty: You know, Doc, you left your equipment on all ...
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Did Doc sleep with Clara the night of the festival?

In Back to the Future Part III, after the festival, Clara is showing Doc craters on the Moon through her telescope. Afterwards they start talking about their favorite writer, Jules Verne. Then they ...
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Back to the future: but exact same space? Which part of car computes? [duplicate]

Movie series show that Dr. Emmett Brown can adjust time machine to go a somewhat selectable/quantized time in future or past. Especially "today but exactly N years ago" quote seems to be showing a ...
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Does “Star Wars” still exist in “Back to the Future”? [duplicate]

In Back to the Future, when Marty goes back to 1955, he scares his dad by saying he’s “Darth Vader from Vulcan”. Obviously Darth Vader didn’t exist in 1955 as Star Wars didn’t come out for another ...
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How did Doc travel to 1885 if he wasn't travelling at 88 mph? [duplicate]

In the Back to the Future universe, we know what is needed for time travel: a flux capacitor, 1.21 gigawatts and a travel speed of 88 miles per hour (I know there are more requirements than that but I ...
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How many DeLoreans were there in 1955? [duplicate]

In Back to the Future, we see Doc and Marty repeatedly returning to 1955. But they weren't the only ones. Biff meets his younger self, and a DeLorean waits hidden in a cave. So am I correct in ...
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Why was Doc Brown surprised at how Marty was dressed upon arriving in 1885? [duplicate]

I mean, he chose the clothes, albeit 30 years prior from his perspective, it doesn't seem that forgettable.
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Why didn't Marty's “you're fired” note fade away as soon as 2015 Biff changed the timeline in 1955?

In Back to the Future 2, Marty gets fired for doing something illegal. Several notes reading "you're fired!" were faxed to him. At the end of Back to the Future 3, Marty avoids the car crash and thus ...
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572 views

Why did Marty blow up the amplifier in Doc's place?

Why did he blow up that amplifier? There was no point in doing such anything..... Just curious...
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Is the DeLorean locked to the Pacific Time Zone?

Suppose the Doc or Marty drove the DeLorean to Arizona, which is one hour ahead of California, and then set the time coordinates for one hour ahead. Would the car realise that the local time had ...
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So what was the secret behind the stainless steel of Doc's Delorean? [duplicate]

"If your going to build a time machine why not do it with some style besides the stainless steel construction made the flux dispersal.....watch out!" He never got to finish his statement what was he ...
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When Marty travels back to the future, why are not there two of him in 1985? Or they indeed are? [duplicate]

When Marty travels back to 1985 from 1955 at the end of the 1st BTTF movie (and meets his all new present), aren't there two Marties in that moment (the one that has just arrived and the one that was ...
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DeLorean has recycle fuel and it's flying at 1985 and Doc is went to 1885 but why DeLorean hasn't recycle fuel and didn't fly at 1885? [closed]

DeLorean has recycle fuel and it's flying at 1985 and Doc is went to 1885 but why DeLorean hasn't recycle fuel and didn't fly at 1885?
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What kind of paradox is this? [duplicate]

I was wondering something regarding the Back To The Future movie: Marty McFly is on stage and he's playing Johnny B. Goode. Marvin Berry phones his cousin Chuck Berry (the person who wrote the song). ...
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1answer
328 views

Why weren't Marty2 and Biff at the stairs in BTTF?

In Back to the Future, when Marty takes Lorraine to the dance there is no-one at the stairs when he drives in... But in BTTF2 it's revealed that another Marty and Biff were at the stairs the same ...
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How many references to time are there in the first 10 minutes of Back to the Future?

I just have to list how many times the references to TIME in the first ten minutes of Back to the Future. How many are there?
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How did Einstein get back from the future if he can't drive?

In the first back to the future, Einstein, the dog, gets sent forward in time by 1 minute. If you have to reach 88 miles per hour, how did he get back? He can't drive a car, he's a dog.
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Why did Jen show Doc Brown the note?

Why did Jen show Doc Brown the note that was in her pocket? She knows what happened, plus she didn't even know she would see Doc there, so does she just carry it around in case she ever bumps into him ...
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When does the lighting hit the clock tower so Marty 1 goes back to 1985 while Marty 2 burns the almanac and learns Doc is in 1885?

In Back to the Future II, Marty and Doc go back to 1955 to get the sports almanac from Biff to save the future while trying to avoid their younger selves. When they succeed they burn it while the ...
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Does this shadow belong to future Marty, trying to get the almanac?

In Back to the Future II, right when Marty sings "Johnny B. Goode" I spot a shadow in the distance on the right; there's a shadow on the shell. I thought it was the other Marty trying to get the ...
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How could Biff vividly remember the date within 30 years?

In Back to the Future Part II, in 1985A Marty asks Biff about the sports almanac. Not only does Biff remembers the exact date when he got the book - November 12, 1955 - but also tells Marty that he ...
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Where did Doc Brown get plutonium from?

In the beginning of Back to the Future, Doc Brown apparently steals plutonium (from a government facility?) to power his time machine. How does he steal it? Plutonium is a highly sensitive material ...