Questions tagged [science-fiction]

For questions relating to worlds with a setting of common science-fiction.

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0answers
52 views

Realistic clone tank design for long-term post-mortem effects [closed]

Let's say you have your stereotypical sci-fi/video game clone tanks: people, in translucent goo (preferably glowing), grown to physical maturity in a glass container. Let's presume the tanks are ...
5
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4answers
220 views

Yellow sky with a breathable atmosphere?

The main character in my novel-in-progress is an alien whose home planet has a yellow sky. This planet orbits Altair (an A7 main-sequence star) and has a nitrogen-oxygen atmosphere similar to Earth's, ...
5
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6answers
325 views

Plausibility of Materials Lasting Millions of Years

I've seen a lot of articles and even questions here which talk about how long modern human artifacts will last. Mostly it seems to boil down to modern materials not having great longevity, though ...
9
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8answers
2k views

'Speed Bumps' as a Lethal Trap in Space Ship Combat

Deceleration as a weapon In a very interesting question about the scale of distance useful for a space opera game, I was inspired to consider the use of deceleration as a weapon. Considering humans ...
6
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1answer
102 views

Interstellar Space Near Future Betelguese Supernova

I recently saw some new estimates about when Betelguese will go supernova and it got me thinking since a worldbuilding project I'm in the early stages of could plausibly see it happen given the ...
2
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3answers
76 views

How to alter geological landforms on Earth

I want to use Earth for my setting, but also want to alter its continents and tectonic plates to look more fantastical than before. If an ancient alien terraforming fleet arrived and was able to ...
10
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10answers
620 views

Proper combat distance scaling for a sci-fi space opera tabletop setting

I'm making a completely homemade tabletop system with the intent of generating a hardish scifi, more sim-like experience for my friends. I've settled on no FTL and all space battles would be ...
28
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27answers
4k views

Why would sentient weapons be created?

So, I am working on a space opera setting. I really like the fantasy trope of sentient weapons or weapons that choose their wielder and transplant that into a sci-fi setting. My concept is that the ...
19
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5answers
4k views

Would it be possible to hide a spaceship for 30 000 years in a cave on Earth?

I'm writing a novel, and my protagonists are going to find a small spaceship that was placed in Europe during the arrival of the first humans in Europe. The Neanderthals would have still been there. ...
6
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4answers
1k views

What is a material that might be missing on a planet that the inhabitants of said planet need to go pick up on a gas giant nearby?

I have this Earth-like planet that is running short on materials, like minerals and gasses, and they have a big spaceship that is able to gather materials from a gas giant that orbits the same star ...
6
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16answers
6k views

I want my aliens to arrive at the edges of the solar system. They would arrive in a week. What do I need to have?

Space is 3d. Which means complications when we introduce FTL travel and in imagining the fleets and their position. But in my story, FTL is easier beyond the reach of the sun and after the last planet,...
13
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4answers
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Would pressurized vehicles operating near the surface of Venus float?

So the setting is that we are several hundred years in the future, and scientists are sending humans to the surface of Venus in reinforced vessels similar to submarines or whatnot. We will assume that ...
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2answers
74 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 ...
6
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1answer
271 views

Can a Mad Science Experiment Involving Men and Horses REALLY Create a Realistic Centaur?

Lately, I've been looking at Google images of "centaur skeleton", but they don't look that convincing to me. The problem is whether or not the last human lumbar vertebra would be the right ...
15
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4answers
2k views

Population Size of a Colony With a Large Gender Disparity

This is my first post on this site, so please bear with me. I am working on a series of stories about an interstellar colony with a large gender disparity. Namely the initial population was made up of ...
10
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13answers
5k views

Is a space station using a Dyson sphere like structure to power itself invincible? [closed]

Let's assume we have this super advanced civilization that actually goes around making Dyson spheres around stars. The purpose of this is to capture all the energy of the star and be a hub of the ...
13
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12answers
4k views

What is the optimum shape for a space warship which primarily uses rockets for offensive weaponry?

So, I was thinking about this question which I asked a while back, and it occurred to me that the "natural predator" of such ships would be missile and fighter carriers which unleash swarms ...
3
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7answers
731 views

Firearms and weapons in space

Lets assume the setting is multiple civilizations all around the universe, each owning at least one of a planet, a huge mother space ship or a space fleet. If for some reason there would be a conflict ...
4
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1answer
92 views

Fusion With Non-Isotopic Hydrogen?

It's my understanding that the sort of fusion that goes on in the sun takes four hydrogen (H-1, one proton and one electron) atoms and crunches them down into a single helium atom. Not knowing a ...
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4answers
259 views

How would an efficient University look like in the future?

The setting: About 150 years from now. Brain Computer Interface (BCI) has completely changed society. Seamless integration with computers and AI makes enhanced people capable of complex, parallel ...
3
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3answers
254 views

A sensible universe for a fictional story [closed]

I wouldn't call this scientifically accurate, but would like some opinion on sensibility of the idea. As part of a story about two time travelling engineers, they discover that their own universe ...
19
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19answers
5k views

How could primitive people destroy or severely damage a very large very modern building?

In my story, there are a large group of technologically backwards Earthmen who wish to remove a futuristic Martian arcology from their ancestral land. The Earthmen do not have any 20th or 21st century ...
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2answers
110 views

Can time travel result in another person? [closed]

One of my characters goes back in time (and to an alternate realm) by sixteen years, then returns to her original realm a year before she left (so after spending fifteen years in the alternate world), ...
9
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4answers
377 views

How many people can my Spire world support?

Alright so I have this big colony ship/artificial world and I need to figure out what kind of population it can support. I’ll cut right to the chase and give you the details. Length: About 1,000,000 ...
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4answers
538 views

What would be possible if my character was able to manipulate electricity [closed]

I am outlining and plotting a novel about someone who is able to manipulate electricity (as in electric currents, charges, etc). Sadly, physics isn't my forte so I was wondering what exactly is ...
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1answer
124 views

Which professions/backgrounds can make better slaves for an improved alien society in case of a selective termination? [closed]

Let's say that an advanced alien society somehow annexed or conquered earth for its natural resources. Then they discovered that these "human"s consume so much resources and they need to be ...
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1answer
82 views

Doxxing users on the Dark Web [closed]

I'm not a hacker, but one idea has intrigued me. Imagine the story is set in a contemporary version of our modern world, and the main character is a brilliant hacker who wants to create a virus that ...
5
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6answers
254 views

Small Arms Laser Alternatives

So first to admit, I really dislike the use of laser rifles and the like to replace traditional ballistic small arms, but I still really enjoy the idea of having something that'd be able to not only ...
3
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2answers
748 views

Does it make sense for manned warfare be obsolete in scifi/ modern stories [closed]

I've recently been doing research about modern warfare and it seems to me that the concept of an army (big men carrying guns) is kinda obsolete/ unnecessary/ high cost for its low effectiveness. There ...
4
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3answers
138 views

How to build a star-sized humanoid superorganism? [closed]

For whatever reason, humans in the far future want to build a star-scale humanoid creature. This massive lifeform would completely envelop a star in its chest area, turning the star into its "...
3
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4answers
170 views

How could I make vampires realistically weak to sunlight?

I’m currently developing lore for a story that I may one day write. A space opera where creatures such as vampires, werewolves, and zombies exist. Before I ask my question, I would like to tell you a ...
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2answers
154 views

What Would it take for Trees with Stone Core to be Self Supporting?

So I have an idea for a biome in which avian humanoids are the dominant intelligent lifeform. They live inside of trees that dwarf the redwoods of our world. The trees grow so tall and so thick (akin ...
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2answers
126 views

Why would someone purposefully cause a nuclear apocalypse? [closed]

In an alternate future, the cold war has never fully ended, as the soviet union never collapsed, but the two super powers have decided to work together in space, resulting in the construction of a ...
5
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0answers
90 views

Metallic Hydrogen vs. Nuclear Thermal Propulsion [closed]

I'm trying to design a spacecraft (only 100-150 years in the future) that will carry a crew of astronauts (probably ≤10) on an extended mission through interstellar space (they have some sort of hand-...
6
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2answers
181 views

how do I design an alien planet without deep speculative evolution?

I've been wanting to make an alien planet for a while, and though I don't want it to just be an 'earth but everything is wacky colored' type thing, I honestly do not have the patience to simulate ...
4
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4answers
153 views

Messenger Line for Interstellar Travel

My goal is to generate a plausible means of interstellar travel without using FTL technology while supporting round trip travel time to nearby stars within a human lifespan (measured by the life of ...
3
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1answer
99 views

How to redistribute weight on an O'Neill Cylinder? [duplicate]

Problem With a rotating cylinder, applying weight to one side and not the other will cause it to rotate off axis and give it a 'wobble' likely causing undesired gravitational effects. Now clearly ...
8
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4answers
255 views

Plants Without Air

On a distant world, the atmosphere is different than ours - there is no oxygen but a high level of C02 like on Mars or the early Earth. This planet is otherwise similar to Earth but slightly warmer. ...
10
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8answers
1k views

How to set a law allowing space explorers to collect keepsakes

I'm in the early stages of thinking up a space science fiction story about a particular group of scientists and young explorers on mission to investigate some points of interest in the galaxy. Their ...
8
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1answer
171 views

How long would it take for a earth-based ring to break up given solar and lunar gravitational forces?

In my world-building project, a decades long orbital conflict has resulted in the trashing of Earth's orbit with massive amounts of debris, shipwrecks, and space junk. However, after an anomalous ...
5
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2answers
219 views

How to Safely Sterilize Europa?

In The Lost Fleet series, it's established that a genetically-engineered disease was accidentally released on Europa, which wiped out all the colonists present. By the time of the series, an insane ...
5
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1answer
127 views

Map projection for a pseudospherical world

A pseudosphere (or antisphere or tractricoid) has a surface of constant negative Gaussian curvature, in contrast to a sphere, which has constant positive Gaussian curvature. Source: http://xahlee....
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2answers
118 views

Is a lightning based minefield in space feasible?

Suppose there was a conflict between 2 spacefaring civilizations and one is capable of cloaking their ships beyond the sensor capabilities of the other side. As countermeasure you'd need a weapon ...
2
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3answers
201 views

What would present day society be like if people were much more intelligent on average [closed]

My earlier question was closed because I didn't follow the rules properly. Truly sorry about that. I hope I'll do better this time. My question is, what would a society be like today if people had ...
25
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25answers
8k views

Sci-Fi weapon that can kill people through armor, but doesn't damage starship hulls?

I have been trying to come up with some kind of small arm that could be used in a science fiction setting with the following two characteristics: It is designed so that it won't put a hole in a ...
5
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8answers
493 views

What could lead to everyone on Earth becoming gay, and the human race facing extinction because they believe they can't reproduce?

I'm interested in creating a (humorous, satirical) science-fiction short story wherein the protagonist repeatedly claims if everyone was gay, the human race would die out. Then (somehow) one day... ...
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1answer
53 views

How do 3D manuver gear works? [closed]

After watching an anime, Attack on Titan I became annoyed by the devices used by those scouts tasked to protect civilians and the tall walls against the giants. I wonder how strong are these cables ...
3
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1answer
64 views

Physics Question: Time needed to melt vast blocks of ice in the desert? [closed]

Please consider a physics question that I am asking here because I have no ability to calculate the answer myself. Given a large cubical mass of water ice is deposited on a desert location on Earth, ...
3
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3answers
119 views

Should my mechs have an artillery gun installed onto their back? [closed]

I’ve decided to add mechs into my world to act as a force multiplication unit as well as an anti-[zombie] horde asset. Yes, I know that mechs are unrealistic and impractical at best but I just want to ...
2
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1answer
154 views

How do giants play ping pong?

Imagine a tall giant standing at 20m tall weights 40 metric tonnes, they have been watching us playing table tennis and were hoping that one day they could play too. How do I design a giant ping pong ...

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