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Q&A

Posts tagged time-travel

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Q&A Why buy tech from the future?

The Demonstration You're a rich, successful CEO/capitalist working in the electronics business. Your R&D division is exceptional and routinely fabs state of the art processors at bleeding edg...

1 answer  ·  posted 3y ago by Green‭  ·  last activity 3y ago by Jordan‭

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Q&A How do I manage memetic infection while time traveling?

Time travel works...just invented, by you. The tests prove it! After many conversations and significant planning, your epidemiologist significant other has approved your plans for time travel, for...

2 answers  ·  posted 3y ago by Green‭

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Q&A Time reversal by the means of lightspeed

In Star Trek, going faster then light will take you back in time (Possibly in real life too!). But I've noticed one inconsistency. Ships, even when going faster then light, have a finite speed. By ...

1 answer  ·  posted 4y ago by El El‭  ·  last activity 4y ago by El El‭

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Q&A Epidemic friendly time traveller

My time traveller from the distant future is about to get stranded back in time, but realises that by travelling back a short time, maybe 100000 years, he is going to leave a trail of destruction b...

3 answers  ·  posted 4y ago by pjp‭  ·  last activity 4y ago by pjp‭

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Q&A In a world with time travel, would it be possible to be your own mother's mother?

Given that you can travel back in time and have a baby there, or alternatively, send your baby back in time, would it be possible that this baby one day becomes your own mother (gives birth to you)...

8 answers  ·  posted 4y ago by sebrockm‭  ·  last activity 4y ago by sebrockm‭

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Rigorous Science The scientific description of time-asymmetric retro-causality?

Doing research into my time braking world I was referred to Split Second by Douglas E. Richards. It turns out he conceived of the exact same machine that I did, however he handled the paradoxes dif...

6 answers  ·  posted 4y ago by Vogon Poet‭  ·  last activity 4y ago by Vogon Poet‭

Question time-travel
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Q&A How to figure out that you traveled 570 million years into the future while in space on a small shuttle craft?

I want a character to get sucked into what she thinks is an FTL-wormhole-gate. While it turns out that the gate is indeed a traversable wormhole, it does not allow for FTL travel. The gate transpor...

6 answers  ·  posted 5y ago by TheDyingOfLight‭  ·  last activity 5y ago by TheDyingOfLight‭

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Q&A If we brought ancient germs to the present

If germs from the past was brought to the present/future on a person (or by some other means of transportation) and we have immunity to its descendants, like the modern germs for example, would we ...

3 answers  ·  posted 5y ago by yo76yo‭  ·  last activity 5y ago by yo76yo‭

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Q&A Would you carry the exact same DNA if you were concieved at a different time?

In this world, time travel is possible, but the only thing that can be sent back in time are thoughts. From the perspective of your past self, you suddenly one moment realize that you have "memorie...

3 answers  ·  posted 5y ago by Lazar Ljubenović‭  ·  last activity 5y ago by Lazar Ljubenović‭

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Q&A Keeping supplies for 1000 years

My main protagonist is going to fast-forward himself in time by 1000 years. He will simply reappear in the same place (marked by a small beacon), the process being instant for him (no hibernation e...

13 answers  ·  posted 8y ago by Michael‭  ·  last activity 5y ago by Michael‭

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Q&A The North Star in the ancient world sky

Question: Would a modern-day teen, trained in using the north star for directions when camping/hiking, notice a difference in how the "north star" (Polaris) works when transported suddenly to 1350 ...

2 answers  ·  posted 5y ago by Cyn‭  ·  last activity 5y ago by Cyn‭

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Q&A Which modern firearm should a time traveler bring to be easily reproducible for a historic civilization?

Eureka! Our hero just discovered the secret of time travel, but what to do with it? "I know!", he says. "I will travel back in time as far as I can and hand them a modern firearm. They will learn h...

12 answers  ·  posted 5y ago by MechMK1‭  ·  last activity 5y ago by MechMK1‭

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Q&A Intragalactic velocity past the central black hole

In my story people are traveling from somewhere beyond the opposite side of the galaxy to Earth. The distance traveled is approximately 66 million light-years. I would like the travelers to exper...

2 answers  ·  posted 5y ago by Javor‭  ·  last activity 5y ago by Javor‭

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Rigorous Science Solar cells in the Renaissance

An engineer goes back in time to attempt to rewrite history: since global warming has wiped out all but a few living species at his home timeline, he wants to prevent it without preventing an indu...

3 answers  ·  posted 5y ago by yanis‭  ·  last activity 5y ago by yanis‭

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Q&A Non-causality-violating FTL travel. / Can omnipotence beat causality?

While building my sifi world I dug into ftl-travel and encountered these mean bullies, causality and relativity. They told me I can't have faster than light travel, because effect can't precede cau...

3 answers  ·  posted 5y ago by TheDyingOfLight‭  ·  last activity 5y ago by TheDyingOfLight‭

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Rigorous Science Preventing the Big Bang

I travel back in time to the Big Bang in my time machine. I am equipped with all the present day equipment I need. I locate the infinitesimal 'point' where the Universe would come into existence an...

3 answers  ·  posted 5y ago by chasly from UK‭  ·  last activity 5y ago by chasly from UK‭

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Q&A Time travel from stationary position?

This is my first question on this site, which I recently found and can't get enough of. In many time travel scenarios, the machine is static in space. My question is how to explain this. For exa...

6 answers  ·  posted 5y ago by Travis‭  ·  last activity 5y ago by Travis‭

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Q&A Could just a brilliant idea advance science by decades, or even centuries?

Inspired by this story, I started thinking. Let's say we have a person, from the modern day, who miraculously gets a superpower: He can rewind time, but retain his own memories. He can rewind all ...

6 answers  ·  posted 5y ago by awenonian‭  ·  last activity 5y ago by awenonian‭

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Q&A If I travel back in time and do nothing, just being an observer, would that change the past?

This is how time travel in my question works: You go back to a certain point in time, physically, regardless of means. Be it a spaceship or a time machine. So you've reached to the past. You kn...

9 answers  ·  posted 5y ago by user61906‭  ·  last activity 5y ago by user61906‭

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Rigorous Science Could the equator of a world be a closed-time like loop?

Most works of fiction have quite imaginative views of time travel. Mighty machines that teleport in time instead of space. Gaping portals in space that take you to another time. Mystical beings wit...

1 answer  ·  posted 5y ago by PyRulez‭  ·  last activity 5y ago by PyRulez‭

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Rigorous Science What will it cost me to travel through Time? (Part 1: Travelling forwards in Time - Time Dilation)

There are many questions on Worldbuilding about what item(s) a time traveller should take back in time in order to alter past events or even simply to survive. There has never as far as I know bee...

1 answer  ·  posted 5y ago by chasly from UK‭  ·  last activity 5y ago by chasly from UK‭

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Rigorous Science How can I make this religion believing in "creating time traveling gods through science" believable?

I want to popularize the following or a similar belief. In many thousand years people will travel back in time to give us an afterlife, if we make it possible, by going the steps, that will lea...

2 answers  ·  posted 6y ago by Philipp Wettmann‭  ·  last activity 5y ago by Philipp Wettmann‭

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Q&A How to broadcast Earth's position to someone in the future?

Using current technology, what could I do to optimize the odds of being located by time-traveling humans a thousand years from now? The accuracy must be such that they could "transport" me out of ...

3 answers  ·  posted 5y ago by imagoomba‭  ·  last activity 5y ago by imagoomba‭

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Q&A Victorian astronomer detecting artificial satellites

To make it short, time-space shenanigans transported everything in a 60 kilometers circumference around an old space-based particle collider to the year 1855. The particle collider was in geosynch...

4 answers  ·  posted 5y ago by Sasha‭  ·  last activity 5y ago by Sasha‭

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Q&A How could we time travel backwards without killing everyone with germs from the future?

Consider a world in which time travel has been made viable possibility. Initially, many are ecstatic at the new technology and the knowledge it will unlock. However, biologists and other scientists...

10 answers  ·  posted 8y ago by wcarhart‭  ·  last activity 5y ago by wcarhart‭

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Rigorous Science Modern technology during WW2, can it be powered safely?

Imagine someone from the modern day somehow gets transported back in time around the same time of WW2 without warning ahead of time. He has with him a laptop, graphing calculator (and a hand full ...

5 answers  ·  posted 8y ago by dsollen‭  ·  last activity 6y ago by dsollen‭

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Rigorous Science How can I modern time traveler determine solstice and equinox?

A XX century researcher time traveled back into the prehistory. He is not in danger of death or anything, but he has only energy to attempt one jump. He must jump back during the sunrise either i...

3 answers  ·  posted 6y ago by Mindwin‭  ·  last activity 6y ago by Mindwin‭

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Q&A How far can a time traveller go into the past before his electrical equipment becomes unchargeable?

My time traveller has a maybe 20-minutes-into-the-future smartphone and laptop. They can store large amounts of data, on the Petabytes level or higher. The time traveller can effectively store the ...

7 answers  ·  posted 9y ago by Eric‭  ·  last activity 6y ago by Eric‭

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Q&A Extrapolating from the GPS network for time travel

One of the aspects of most sci fi time travel representations that I find most challenging for my suspension of disbelief is this idea of people travelling through time and not travelling through s...

2 answers  ·  posted 6y ago by Tim B II‭  ·  last activity 6y ago by Tim B II‭

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Q&A Theoretical: If you were to psychologically examine people that have time-traveled, what would you look for?

Let us say there is an adult male, adult female, a boy, and a girl. They experience time-travel. As a psychologist, what would you examine before and after the travel to ensure that psychologicall...

3 answers  ·  posted 6y ago by Matthew‭  ·  last activity 6y ago by Matthew‭

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Q&A A charred human arm appears from thin air; what can we learn from it?

Setting: Modern day Earth, no special technology advancements. Situation: On day, in a relatively populated American city (the specific city is unimportant...the purpose of this point is that it's...

4 answers  ·  posted 8y ago by Liesmith‭  ·  last activity 6y ago by Liesmith‭

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Q&A The Transferable Skills of Sociopathy

Executive Summary Thank you for considering Chronograph Talent Consulting for your talent acquisition needs. We select the best talent from all previous periods of human history and make them ava...

3 answers  ·  posted 6y ago by Green‭  ·  last activity 6y ago by Green‭

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Q&A As a time traveler, how would I see quantum randomness change history?

Suppose I have a time-traveling DeLorean (of all things), and I've used it to travel back to 1955. But then I ran out of juice. Fortunately, I just happen to know that a certain clock tower will be...

5 answers  ·  posted 7y ago by ognockocaten‭  ·  last activity 6y ago by ognockocaten‭

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Q&A The Paradox Men - Cosmology

In Charles L Harness's 'The Paradox Men', a spaceship crashes on earth several years before it launches, having circumnavigated the universe faster than the speed of light. It is a good read, but ...

5 answers  ·  posted 6y ago by Atcrank‭  ·  last activity 6y ago by Atcrank‭

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Q&A Stopping time, by speeding it up inside a bubble

Imagine I have a device that can stop time for the person who holds it (similar to Bernard's Watch). This device works in a very specific way - it creates a bubble around the user (just large enoug...

8 answers  ·  posted 7y ago by Drgabble‭  ·  last activity 6y ago by Drgabble‭

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Q&A Avoiding preventing your own birth in a time travel paradox?

Assume a world with no multiverse theory, just a single unbroken timeline. If you were to go back in time to the town your parents lived in on day of your conception, the air displacement due to yo...

17 answers  ·  posted 7y ago by Space Ostrich‭  ·  last activity 6y ago by Space Ostrich‭

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Q&A (Please Someone Explain) Is time travel using wormhole as portals possible logically?

I am working on a story and came up with a doubt regarding an explanation given for time travel using wormholes as portals. The below given is taken from Wikipedia link: https://en.m.wikipedia.org...

6 answers  ·  posted 6y ago by Peaceman‭  ·  last activity 6y ago by Peaceman‭

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Q&A How broken would my jPhone be if I traveled back in time 24 hours?

I have a character who ends up jumping backwards in time by 24 hours. Essentially nothing else changes, but the character has their jPhone in their pocket at the time of the jump. How functional sh...

4 answers  ·  posted 6y ago by Dubukay‭  ·  last activity 6y ago by Dubukay‭

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Q&A Are there any ways to allow some form of FTL travel without allowing time travel?

Faster than light travel is a really cool thing to have in sci-fi settings. It allows humans, in relatable time scales, to travel the galaxy and see a variety of worlds. It allows for conflicts spa...

9 answers  ·  posted 8y ago by ckersch‭  ·  last activity 6y ago by ckersch‭

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Q&A Faster time for humans compared to (more advanced) intergalactic civilizations

This is my first post, I apologize in advance if my English is not accurate, it is not my first language. My question is: in a world where very advanced civilizations have achieved intergalactic t...

3 answers  ·  posted 7y ago by Davide42‭  ·  last activity 7y ago by Davide42‭

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Q&A Is there any feasible real sounding science sci-fi explanation for a chronovisor?

What would be able to explain a visor like device that can see the past or future? I'm trying to make it as little as clarketech as possible. Any ideas?

6 answers  ·  posted 7y ago by Max‭  ·  last activity 7y ago by Max‭

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Q&A Is there any Rubber/Latex source that could have been used by Europeans prior to the discovery of the Americas?

I was imagining a scenario where an 21st century engineer accidentally finds himself transported through time to early Renaissance Europe. Realizing that no help or rescue is on the way, he decides...

4 answers  ·  posted 7y ago by Redbud201‭  ·  last activity 7y ago by Redbud201‭

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Q&A Time travel and random events

Suppose we have a Branching Timeline paradigm, in which time travel into the past creates a new timeline. Is it fair to assume that any probabalistic events which might occur might be very differe...

4 answers  ·  posted 7y ago by danl‭  ·  last activity 7y ago by danl‭

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Q&A What happens at the interface between two universes with opposite thermodynamic arrows of time?

I saw this old closed question on Physics.SE and thought it would be perfect for here. The original author is long gone, so I thought I'll just have to post it myself. We can consider factors of p...

5 answers  ·  posted 8y ago by JDługosz‭  ·  last activity 7y ago by JDługosz‭

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Q&A How to realistically build a time machine?

In 1890's H.G. Wells famously takes a "science fiction" approach to time travel by building a machine that can move freely through time as a dimension. It was made of clockwork "” mechanical gears...

5 answers  ·  posted 7y ago by JDługosz‭  ·  last activity 7y ago by JDługosz‭

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Q&A Helping the Soviets to win the race to the moon

Because of an error in the interpretation of the Mayan calendar I just discovered, I know now that Earth will be destroyed on March 13, 2021 at 11 o'clock in the morning, time zone of Palenque. I ...

7 answers  ·  posted 7y ago by Ginasius‭  ·  last activity 7y ago by Ginasius‭

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Q&A Will This Violate Causality?

Okay, so I have a sci-fi setting in which there is a form of FTL travel. Imagine the universe(all three/four dimensions of it) was stretched out onto the surface of a sphere. Now assume that ther...

3 answers  ·  posted 7y ago by Douglas‭  ·  last activity 7y ago by Douglas‭

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Q&A If an immortal, fabricated particle could travel FTL, would it exist in all times, or only the past relative to its present?

This seemed too scifi or hypothetical for physics, so here goes. Suppose a manipulated quark with 0 mass could travel faster than the speed of light. It's known that the faster you go, the slower...

5 answers  ·  posted 7y ago by Bango‭  ·  last activity 7y ago by Bango‭

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Q&A How to send a message to the past using a precognizant rabbit?

Let's say we have a wild rabbit that can see a few minutes into the future. Being a non-sentient animal, it barely registers these abilities, and largely uses it to find food, avoid predators, save...

3 answers  ·  posted 7y ago by possiblySerious‭  ·  last activity 7y ago by possiblySerious‭

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Q&A How can the more lucky friend of John Doe past-proof his travel to Versailles?

We know the depressing fate of John Doe who woke up one day in the Middle Ages, to quickly die or spend his life in a monastery. His more lucky friend Mark had a vision before being transported a...

3 answers  ·  posted 7y ago by WoJ‭  ·  last activity 7y ago by WoJ‭