Questions tagged [faster-than-light]

For questions about settings in which superluminal travel and/or communication is a possibility.

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How would I pull off FTL travel in a universe where inter-universal travel is also widely used?

I'm trying to implement proper FTL travel in my story. I have already looked at the Alcubierre Drive, but every implementation of said drive that I've seen is too outwardly obvious for my taste. ...
viridianskyes's user avatar
5 votes
1 answer
604 views

Speed of light in higher-dimensional space [closed]

In science fiction, one of the widely used tricks for achieving faster-than-light motion is traveling through "hyperspace". By that I mean, entering a space with more than 3 spatial ...
SCP_org's user avatar
  • 61
2 votes
1 answer
219 views

Can an Alcubierre drive be built by starlifting?

I am setting up a very futuristic world for a sci-fi story, where having FTL tech would be very practical. For a bit of context, here is what I am imagining: It is a type 3.2 - 3.3 civilisation, where ...
The Rocket fan's user avatar
11 votes
10 answers
3k views

Is it reasonable for the development of faster-than-light travel to significantly slow the development of machine learning technology? [closed]

One of the settings I'm in the very early stages of working on is based on the idea that, if humans had somehow developed faster-than-light travel in the mid 2000s, the development of machine learning ...
Choroflorocarbon's user avatar
3 votes
3 answers
154 views

What could be used to explain the visual effect of the ‘Blackout Flare’ phenomena described?

As stated on a work-in-progress document for the phenomena I’m referring to as “Blackout Flares”: A Blackout Flare is a short-lived, instantaneous warping of shadows produced by an object moving ...
Godzilla Louise's user avatar
4 votes
3 answers
318 views

5,000 years from now — The Best valuable for wealth & trade? [closed]

Humans using faster than light-speed (FTL) travel have found and begun populating other planets, planetoids, asteroids, etc. Local societies farm; they ranch and mine; they are bootstrapping light ...
Old Uncle Ho's user avatar
18 votes
5 answers
5k views

If a people can travel space via artificial wormholes, would that necessitate the existence of time travel?

The primary mechanism of “faster than light” travel in my story is via artificially formed wormholes that can be created to transport a craft to a reasonably precise location. Would the existence of ...
Kal Madda's user avatar
  • 1,851
-2 votes
3 answers
198 views

Where can a non-clarkean civilisation find an FTL Space-drive?

So, this is the deal. In this scenario, humans are unable to create an interstellar civilisation. They have tried colonising exoplanets the slow way, at about a quarter of the speed of light, but this ...
user98816's user avatar
  • 8,593
5 votes
8 answers
4k views

Would a living being moving at 99% the speed of light see time stop, or would it see time move faster?

Let's say I want to write about a living thing that can naturally go to 99% the speed of light in just one second of acceleration. I would like to write what this being would experience at such speed ...
Invasor's user avatar
  • 533
9 votes
14 answers
3k views

How do we create an interstellar communications system?

In my science fiction project, humans have settled in a new Galaxy, known as the Novan Cloud. In order to communicate information to other alien races humans require, alongside superluminal travel, (a ...
user98816's user avatar
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3 votes
1 answer
204 views

What would the launch and explosion of FTL-missiles look like?

In Effects of being hit by an object going at FTL speeds, the effects of a spear going at FTL speeds are debated in detail. For my setting, humanity's last hope of stalling an alien invasion comes ...
Elyo's user avatar
  • 313
-1 votes
1 answer
115 views

A device to negate time dilation believability [closed]

In this setting spacecraft are able to approach the speed of light and are equipped with a device to negate the time dilation, this allows things to go horribly wrong if this device fails plot wise. ...
Stargazer's user avatar
  • 535
6 votes
2 answers
506 views

How would the laws of physics need to be adjusted if there really were a preferred frame of reference for FTL?

I am considering how to implement faster-than-light (FTL) travel in a sci-fi setting without the attendant problems with causality. One of the ways I've been thinking about for this is establishing a ...
Lawton's user avatar
  • 588
21 votes
17 answers
3k views

FTL gates and drives used simultaneously without redundancy?

This world has 3 forms of faster-than-light travel: Warpdrives don't require destination coordinates. They can be activated and deactivated at any time to move continuously through space. But they ...
Stargazer's user avatar
  • 535
2 votes
1 answer
254 views

What would be more realistic for a universe where FTL is possible?

I am working on my own project with applying science to Star Wars. I try to meld the fantasy with as much real science as possible, but I am having a problem with the size of the universe. I am ...
user73829's user avatar
  • 869
6 votes
2 answers
179 views

Is it radio silence between 2 Alcubierre drives?

Suppose we grant a 1 time scientific miracle for exotic matter to power Alcubierra wrap drive, then could two such drives communicate with each other? The drive discharges exotic matter particles ...
user6760's user avatar
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7 votes
2 answers
1k views

Negative mass and Dark matter in Alcubierre Drive?

I am writing a science fiction novel therefore I am using the idea of the Alcubierre drive for warp travel which involves some handwavium but has roots in theoretical physics (which is my goal). While ...
H. M's user avatar
  • 159
7 votes
3 answers
318 views

How to form a space government with only communication?

Long ago, Prime Minister Bob created the [insert name here], a government organizing Space in a peaceful, lawful, and orderly way. This story is taught in classrooms around the [insert name here], ...
Firedestroyer's user avatar
17 votes
10 answers
4k views

How would a radar work while inside a FTL dimension?

In my universe FTL drives are easily mass manufactured and most citizens own them and use them. The FTL drives work by compressing a certain powder which then explodes, ripping open a wormhole which ...
HomegrownPotatoes's user avatar
1 vote
1 answer
112 views

Could galactic tides power FTL travel?

I came across galactic tides while trying to find a new concept for FTL travel for a SF novel. Further research suggests it was just a coincidence, that nobody has ever suggested any possible ...
TheSpidermonkey22's user avatar
2 votes
3 answers
346 views

What is your fuel consumption when traveling at relativistic speeds?

For a given distance of travel, your fuel consumption can be calculated by running hours instead of distance. This is common when you're traveling by boat for instance. You don't typically say "I ...
ChronoFish's user avatar
12 votes
11 answers
4k views

With FTL technology is it possible to leave after another and yet arrive before it?

There's a plot point in my script that has been bothering me for a while. My story has faster-than-light travel thanks to distortion engines, which re-purpose the artificial gravity inside the ships ...
LiveInAmbeR's user avatar
  • 10.6k
5 votes
4 answers
401 views

What would the local effects/affects be of a ring spinning near luminal velocity?

To better solicit more inline with what I'm trying to imagine, I'm editing my question, the original question is left below and removing the hard science tag, as that just seemed to cause issues, ...
Gillgamesh's user avatar
  • 6,027
2 votes
3 answers
218 views

Is it plausible for FTL travel to be made easier to achieve through universal pure axial movement?

A bit of a strange concept that's been floating around in my mind. We all know how grid-based movement works. Moving in a straight line along any direction of X, Y, and Z requires only one step/...
Lemming's user avatar
  • 6,097
6 votes
2 answers
137 views

How to interpolate between the physical, material universe with relativistic reference frames and a spiritual objective reference frame?

I'm new here and I assume that it might be weird to have souls in a science-fiction question but hear me out. While souls in my setting do have some magical unexplainable supernatural properties, it ...
PedrohSpaceWolfy's user avatar
46 votes
29 answers
7k views

What might stop people from destroying navigation satellites that are used for FTL plotting?

The idea is that a number of satellites have been deployed throughout the galaxy and ships use them to plot their FTL jumps. If that's the case, the thought occurs to me that someone could try and ...
Micromanic's user avatar
0 votes
2 answers
249 views

What’s better than a hyperdrive for intergalactic travel? [closed]

I’m trying to write a Star Wars story about someone who figures out a way to travel FTL between galaxies. Hyperspace doesn’t work in the Intergalactic Void, and there is a hyperspace disturbance at ...
Max's user avatar
  • 31
1 vote
2 answers
290 views

If a lightspeed impactor "clipped" the Earth, would the resultant valley remain stable for geological timespans?

Let's say that some aliens fling a hyper-super-duper-lightspeed impactor at the Earth. They barely hit it. Instead of a direct hit through the center of mass, the impactor "clips" the Earth ,...
KEY_ABRADE's user avatar
  • 12.8k
51 votes
29 answers
8k views

How long can it really take to calculate a hyperspace jump?

It is a common trope in sci-fi that engaging a vessel's faster-than-light travel requires performing some complicated mathematics that takes a non-trivial amount of time. I want to know to what extent ...
Tom's user avatar
  • 14.5k
5 votes
2 answers
224 views

Does a ship traveling faster than c0 (speed of light in a vacuum) emit Cherenkov radiation?

A Space Whale has been traveling from point A (let it be Sirius) to point B (let it be Vega) faster than light (FTL). Did it emit Cherenkov radiation while traveling? Cherenkov radiation is radiation ...
4.12.22.4.18.0.'s user avatar
5 votes
1 answer
303 views

It would be possible to enter and exit a black hole using a Warp Drive? [closed]

Well, a Warp Drive expands and contracts space, passing it through you, technically allowing faster than light travel. And so, it would be possible to actually enter a black hole and thus, exit it? I ...
Fulano's user avatar
  • 209
9 votes
2 answers
442 views

Using transfinite numbers in a scifi story

I have been bandying about some exotic mathematics ideas as the basis for a hard scifi setting, and I wonder what technology/alien life would "make sense," here, given the physics arising ...
Kristian Berry's user avatar
43 votes
21 answers
7k views

Why are certain spaceships capable of warp at a moment's notice while others require some preparations?

After seeing an advert on my holo-watch about the latest fleet of interstellar spaceships capable of going into warp at the press of a button, I was both amazed and dumbfounded by it Conventional warp ...
user6760's user avatar
  • 47.9k
16 votes
3 answers
4k views

I come out of hyperdrive as far as possible from any galaxy. How isolated am I and what do I see?

I come out of hyperdrive as far as possible from any galaxy. How isolated am I and what do I see? My purpose is to carry out a top-secret experiment where space is as flat as possible. For this ...
chasly - supports Monica's user avatar
8 votes
1 answer
238 views

How fast could a Path Optimization Drive travel through Non-Euclidean/Discrete Space?

I have an idea is for an FTL drive based on the theory that our universe is both Non-Euclidean and Discrete at the Planck Scale, but is instead better represented as a series of interconnected nodes. ...
Nosajimiki's user avatar
6 votes
2 answers
897 views

Crew member overboard! Interstellar Space Edition [closed]

I am just curious what would happen to those poor souls whom are thrown overboard while the spaceship which is enveloped in a warp bubble, does the bubble acts like a firewall similar to the black ...
user6760's user avatar
  • 47.9k
6 votes
14 answers
7k views

Effects of being hit by an object going at FTL speeds

This will be a question that I am fine with having less realism in. I was thinking of a weapon, like a spear, that can go at FTL (faster than light) speeds. To be clear, the spear is FTL due to ...
CYCLOPSCORE's user avatar
  • 2,933
30 votes
11 answers
5k views

Does my concept for light speed travel pass the "handwave test"?

Basically my idea for a light speed travel concept (not faster than light) is the Zero Mass Field. I am aware that as far as we know this is impossible, but want to know if this makes logical sense ...
Wiggo the Wookie's user avatar
5 votes
3 answers
592 views

FTL Drive Reality Check

Inspired by this article, which refers to two other articles. (article 1) (article 2) These articles suggest that the permittivity of free space ($\epsilon_0$) might be adjustable by changing the ...
James McLellan's user avatar
4 votes
2 answers
287 views

What if the speed of light was based off wavelength?

Im making a sci fi story (first part here) and I needed a cool and interesting way to make ftl communication possible, at first I thought, make the speed of light infinite but thats kinda boring so I ...
Topcode's user avatar
  • 2,285
2 votes
2 answers
216 views

Ways to make the time travel aspect of FTL to be as hard as possible? [duplicate]

As I understand it, thanks to the General Relativity it is absolutely impossible to have both relativity and FTL without the latter opening you a way to get into your past thanks to the relativistic ...
Darth Biomech's user avatar
7 votes
8 answers
2k views

Selling real-estate in space. How can it be allocated and how can it be marked out?

Space is useful for storage. In the future there is a thriving space real-estate market. Generally speaking, space in orbit is more desirable than outer space but both have a market value. How can ...
chasly - supports Monica's user avatar
6 votes
4 answers
575 views

Exploiting Time Travel FTL Mechanics to Create FTL Without Time Travel

A while back, I asked if FTL drives mandated time travel, and I was referenced this previous question: Are there any ways to allow some form of FTL travel without allowing time travel? Where the top-...
FlyingLemmingSoup's user avatar
5 votes
4 answers
928 views

Which hypothetical faster-than-light drive is more realistic?

I'm beginning to put together ideas for a science fiction story featuring interstellar travel. I want to put an emphasis on the "science" in science fiction for it though. In that I'd like ...
DrShakalu's user avatar
22 votes
18 answers
6k views

What are plausible faster than light methods for a far advanced civilization that aren't a warp drive

Hopefully the title sums it up well, but I'm looking for potential faster than light travel (hoping for real or pseudo-real science here, as much as possible) that doesn't involve a warp drive, which ...
TCooper's user avatar
  • 589
12 votes
9 answers
3k views

A plausible explanation for the "ansible?" - FTL communications

I need FTL interstellar communication in my story. Ursula K. Le Guin first used the idea of the "ansible" as a fictional device or technology capable of near-instantaneous or superluminal ...
MajorTom's user avatar
  • 1,466
3 votes
11 answers
3k views

Can FTL travel be achieved with mid-20th century technology? [closed]

Let's say that the FTL system is based upon that of Star Trek, but deviations can be made. FTL technology was discovered through the reverse-engineering of a starship that crashed on the civilization'...
Galactipod's user avatar
50 votes
19 answers
8k views

How can I justify a Type III civilization using planetary jump drives instead of FTL starships for galactic commerce and travel?

I have this idea for a science fiction story (It actually came to me in a dream.). In the distant future, the inhabitants of the Milky Way have formed a galaxy-spanning civilization similar to the ...
Mark Morales II's user avatar
4 votes
6 answers
697 views

Is it feasible to use light as a transmission vehicle?

Let's just say I'm no scientist, so my understanding of these things is all surface. Having said that, I don't write hard science fiction. But I'm not quite as "magic-like" as Star Wars. My ...
MajorTom's user avatar
  • 1,466
3 votes
4 answers
254 views

Military strategy in a world of fixed opaque wormholes [closed]

(This is based on the old wargame Starfire... but don't bother providing answers based on newer versions of said game.) Spacecraft travel by inertialess drive -- that is, beyond mere reactionless ...
Tristan Klassen's user avatar