Questions tagged [time]

For questions about the standard passage of time on objects/people/civilisations etc. Also consider the [time-keeping], [spacetime-dimensions], [alternate-history], [universe], [time-travel], or [time-manipulation] tags.

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7
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1answer
111 views

Reality Check: Controling time to produce velocity

Background I recently had some fun watching YouTube videos about redefining the nature of gravity based on the existence and flow or "velocity" of time. (Example) and it got me thinking of ...
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11answers
3k views

What would the scientific explanation be for an energy source that can last 130,000 years?

I am playing with the idea of an alien ship landing on earth 130,000 years ago. Over time it's covered up with water and sediments and is eventually discovered in modern day. It contains numerous ...
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3answers
108 views

Small space of slow-down time

I am aware of this question: Speeding up time? My question is about the opposite effects. Specifically, I want to describe the results of using the time altering device create by the Great Race of ...
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12answers
7k views

How can I store energy/data reliably for 300 million years?

Following this question: How can I implement time travel on a somewhat realistic way? Considering I have a way of getting energy into the past (as said on the previous question), I need a way of ...
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1answer
90 views

It is possible to slow down time without a Black Hole? [closed]

Well, I saw a interesting question in other sites and it made me wondering. Since cryogenics and hibernation aren't exactly that easy, and colony ships that travel through the eons in space carrying ...
2
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2answers
235 views

Slowing time, slows gravity?

I'm designing a character that can slow time in an area around him/her. The living things in that area perceive time normally, so they see this character and the things out of that area moving very ...
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6answers
3k views

How would people in Medieval times react to the clothes worn by a time traveler coming from the present day?

My heroine (accidentally) travels through time and finds herself in a medieval setting (a forest in e.g. 1100). The only things that time traveled with her, are her clothes. At first she gets lost in ...
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1answer
109 views

Could a pebble-bed reactor provide sporadic power for millions of years?

The device needed is a monitoring system. Aliens leave a probe on Earth or orbiting Earth, which typically lies dormant, but it awakes every 1,000 years or so to check life's status on Earth. There's ...
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0answers
41 views

Seeing the future [closed]

Is it possible to distort time without a black hole and see all, in one instant, see everything all at once, future, past and present? And if it was possible to see the future, how would it really ...
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11answers
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What benefit would a deity gain from spreading out a conflict over a long period of time?

Nyarlathotep, the Black Pharaoh, is in ancient conflict with other elder gods in his weight class, and seeks to enter the realm of Earth to rule over mankind. Unfortunately, he is prevented from ...
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0answers
41 views

Single Time Zone in a Galaxy [duplicate]

This follows up the Single Time Zone on a spherical planet. Suppose now we have many habitual planets in a Solar system or in a Galaxy. How does it work to set up a Universal Time? Will it be ...
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4answers
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Single Time Zone on a spherical planet

I am particularly interested in the case of feasibility to have all countries and all regions of our planet, the Earth, to have a unified Single Time Zone (say UTC). Suppose all countries and all ...
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5answers
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How would I coordinate meetings with people on Mars?

First off, assume faster-than-light communication exists and has enough bandwidth to do video conferencing. This question wouldn't even be relevant without faster-than-light communication since it ...
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1answer
140 views

How long would it take for a group of settlers to form a new civilization

In my world, sometime before the main events of the story, a group of about 100 explorers set out to cross the uncrossable mountain range that divides the continent and venture into lands unknown. ...
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4answers
237 views

How would units of time be measured on a planet with a binary star system?

The days are long approximately 25 hours of daylight and 5 hours of darkness. There are two stars. The first star rises like the sun. The second star tracks the horizon. (I'm prepared to hand wave the ...
4
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1answer
128 views

Plausible age for the ruins of a modern city skyline

The setting is some indeterminate amount of time in the future. Humanity has had a rough recent history being rocked by wars, disease, and natural disasters and the current iteration of civilization ...
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2answers
88 views

Universal Time | Time in Space seen by Intelligent Life Forms or Aliens [duplicate]

How would several intelligent life forms, aka. Aliens or Foreigners to us, who roam around space (in something I would call space ships) and have never seen or heard about earth interpret time? How ...
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9answers
973 views

Is 30 years long enough to remove all evidence of the United States of America? [closed]

In my story which is taking place in 2050, there is no United States of America. The only reference to the USA is an old military bunker where the characters are currently hiding. Is 30 years long ...
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0answers
54 views

How long would daytime and nightime be on a planet with a 26 hours rotational period? [duplicate]

The basics about the planet in question: As the second planet in the star system, it's somewhat warmer than Earth is. The rotational period is 26 hours and the orbital period is 312 days which ...
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3answers
137 views

Can a person step into a time rip and age rapidly without their clothing aging? [closed]

I have a character who has pierced the dimensional membrane (that’s what I’m calling it) around our universe/world seeking a new form of energy. In the process he created time bursts—-quick flashes of ...
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4answers
174 views

How long would it take to make three hundred spaceships and an orbital defense system? [closed]

I'm about halfway through a story I'm writing, where aliens invade, beat us up, one spaceship blows them all up, etc, etc, and everyone lives happily ever after. Except they don't. So after they chase ...
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2answers
189 views

How long could late medieval-like architecture survive without humans to maintain it while they were in a magical sleep?

I'm bouncing ideas around in my head for the story for a game I'm planning. I wanted the world to be one where humanity was re-emerging from a magical slumber and setting out to reclaim the world. ...
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1answer
109 views

A Good Gift for a Medieval Worker? [closed]

I'm a time traveller, and on my last trip back to the 1300s I befriended several of the locals. One is a fairly wealthy farmer, and the other is the village blacksmith. Now, since they helped me when ...
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2answers
61 views

Tidally locked time keeping 2 [duplicate]

I have done some research and so much contradict one another or I simply fail to understand. Can a moon be used as accurate time keeping and is it possible for it to revolve around the planet once an ...
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15answers
4k views

Could agriculture still be developed by intelligent species that lack the concept of past and future?

Imagine somewhere in the universe there is an intelligent species that is as intelligent as our stone age fore-brothers and sisters but will never establish the concept of past and future events. ...
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2answers
58 views

Durability of materials in ideal conditions

How long can objects made of hard material last at room temperature in otherwise ideal conditions? If left outdoors on Earth, over the course of millions of years, any material will be eroded by wind,...
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1answer
112 views

A new type of paradox? [closed]

Imagine we had this incredibly powerful computer that can simulate our universe, and that we somehow knew the initial conditions of the big bang (or the planet earth) down to the exact detail. Fast ...
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1answer
82 views

How do I calculate the total time dilation experienced by an accelerating ship?

My advanced human civilisation often has high-acceleration ships travelling at near lightspeed. I know that time dilation would have a significant effect on the time experienced by the crews, but I've ...
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1answer
103 views

Civilization going backwards. How to? [closed]

When we talk about civilization rollback, it's usually some kind of post nuclear war scenario, where everything is in ruins but the knowledge isn't lost. After some huge catastrophe, we'll still have ...
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9answers
4k views

Would a single solar system be able to come up with a main time system?

I have a solar system containing multiple planets, most having an intelligent species inhabiting it. To keep a common peace, they created a large government system to help stop territorial wars ...
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7answers
1k views

Could written documents last for 3 million years?

This is another question about my fantasy version of Pluto. Basically, I’d like the Plutonian’s civilization to be at least 3 million years old, and there are written documents from when their ...
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6answers
1k views

How old are people from several worlds? [closed]

In an universe with several worlds, how would people from different planets define their age in a way that everyone use the same basis ? Different species have different lifespan, like humans up to ...
2
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1answer
215 views

how would a Black-Mesa-like research complex fare after 500 years of abandonment [closed]

So, take Black Mesa from Half Life. What would it look like after 500 years of abandonment? (assuming the events of half life have not occured) For this scenarios there are no looters or humans ...
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10answers
7k views

How much would a language change over 500 years completely cut off from its source?

In the lore for the book I'm working on, what basically happens is a ship full of Byzantines is expelled from their homeland on a ship and winds up on a small continent (think something around the ...
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2answers
98 views

Tracking time between multiple different realities simultaneously

How do I track time (using a special time system) between two realities that are not necessarily parallel but if a person jumps from one to the other what would the time be in comparison to their ...
4
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3answers
319 views

How to get time to pass faster on another planet compared to earth?

I'm developing a story where humans colonize a few planets. One planet, lets call it Planet A, has similar gravity to earth, air pressure, and solar radiation. You cannot however, walk on the surface ...
11
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3answers
257 views

Time Traveler's Paradox Prevention Guidelines

I'm running a mysterious, shadowy, acronym-lettered agency which deploys agents all across the world (and beyond) to deal with supernatural and paranormal events. What they encounter is often ...
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3answers
183 views

Reason/Mechanism for seemingly randomly lengthened lifespans in characters in a roughly viking-age world [closed]

So here's the deal. I'm working with the idea that in my world, people can have very different lifespans. Most people live a normal lifespan - the book is set in a fantasy world roughly equivalent to ...
8
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4answers
259 views

What would it take to make a scientific second equal exactly one traditional second?

A scientist is resetting the clock on his microwave one day as he considers the hopelessness of keeping the time exactly right. Not for the reasons we worry about like power outages and daylight ...
5
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3answers
139 views

How long/in what condition would a corpse last in a totally irradiated, unsealed environment?

My setting takes place in a post-apocalyptic america, and is in many ways a classic 'great war ends world' sort of thing. However, the cataclysmic ending to most of the country is persistent, lethal ...
2
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1answer
63 views

Would time dilation alter apparent mass observed from outside time dilation zone?

A familiar scenario in scifi: a bubble of space is isolated artificially from the outside world by means of time dilation: time inside the bubble moves more slowly than time outside it. Assume that ...
6
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4answers
588 views

How could a volcanic island last for 100 million years?

Some islands can survive for very long. Madagascar, for example, has been around for 80-100 million years and is likely to remain isolated for hundreds of millions of years more. Volcanic islands, ...
6
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3answers
165 views

What would a suitable measurement for time be that can be used universally? [duplicate]

I have recently been trying to come up with a measurement of time, such as years, seconds, etc, that can be used irrespectively of galactic location and universe location. Star-treks stardate was ...
37
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19answers
9k views

Is it possible to encode a message in such a way that can only be read by someone or something capable of seeing into the very near future?

Say you have some way of seeing somewhere between a microsecond to 0.1 seconds into the future, or at least the most likely future. Is it possible,through something like a flip-book effect or some ...
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2answers
364 views

How much is it possible to fake age? [closed]

There's a society with a privileged class of people. Privileged - because the period of time when they can be part of that class is limited. Only people between 20 and 30 years old can be admitted and ...
3
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2answers
911 views

What would be left of a modern city 50,000 years from now?

I've seen questions here about what cities would be like after being abandoned for a thousand years, but what would be left after timescales of tens of thousands of years? Ancient settlements like ...
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0answers
162 views

I'm inventing a new calendar. What are good criteria for the choices of first day, first year, and first hour? [closed]

I'm inventing a new calendar: It will be used worldwide. It uses an intercalary (366th) day to be inserted every 4 years. If extremely successful (unlikely I know), it will replace the Gregorian ...
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0answers
123 views

Can you mine bitcoins or other data a time loop? [closed]

You have your own time loop. For one day only: at midnight, if you choose, you can transport your mind back 24 hours and relive the day, but with all the memories you have gained. Nobody else will be ...
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1answer
123 views

Speed of light, Motionlessness, and Time Travel [closed]

i want to ask something I quote from some web and got this : 'According to Einstein’s Special Relativity Theory, time is affected by speed. It’s already been proven in the lab that subatomic ...
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10answers
556 views

A Nonlethal Time Dilation Field

I want a way to enclose an area (building-sized and on Earth, let's say) in a field that warps spacetime so that time appears to pass 100x slower within it. You don't need to explain how the field got ...

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