Questions tagged [science-fiction]

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

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How high could a super-mountain get on a lower gravity planet (0.7g)? [duplicate]

I’m thinking of a world with one extremely high mountain that would factor prominently into the mythology of the civilizations. I’ve heard that it’s estimated that 10,000 meters is about as high as a ...
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2answers
113 views

What Effect Will This Pseudo-magic Substance Have On Early Humanity?

This world is like ours, but with the addition of an enhancing substance that comes in different colors and is found in rare (and small, no bigger than a fridge) meteorites that have been landing at (...
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20answers
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Why do people still live on earthlike planets?

Like our good SciFi prophet Isaac Arthur postulates, for a civilization with a decent space presence planets are overrated and rubbish. They're down there in the deep gravity well. There is no ...
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2answers
134 views

How viable would it be to dig down on Mars to build an underground colony?

I want a colony on Mars that builds BOTH ways, up and down. Domes or structures that go up normally, but a large portion of the colony would be levels underground. I think this would allow you to take ...
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2answers
63 views

How Would a Modern Military Use a Templar Soldier? [closed]

The military has recruited a new asset, a mutant named Templar. Templar's skin is tough enough to make him immune to small arms fire, he's three times as strong as a regular human being, he has twice ...
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5answers
237 views

What can cause a living person to explode?

I have a lab in which many tests are done on prisoners. I need some kind of material that causes the body (whole or a part of it) to explode after injection. Is there any realistic material that ...
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8answers
1k views

Ricochet during boarding in space?

In space, boarding parties could be used to effectively take over ships without severely damaging them. Piracy would be much easier. But what about weapons? Your average pirate will have a slug ...
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2answers
143 views

Mounting a cybernetic prosthetic arm

So I have a steampunk setting with some magic and I have a young, 20 year old female character who is supposed to have a full prosthetic arm. It might be assumed that the answer to this question could ...
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1answer
160 views

Does my “Bombardment cruiser” make any sense?

In my universe 500 to 700 years the navy is deployed to eliminate the cult stronghold on the planet of OgallyBoogally. The bunker is a kilometer below the surface and covered by lots of armor and ...
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1answer
207 views

What happens if 1 cm of Cosmic String impacts Earth?

I have seen in different science fiction use Cosmic Strings (1-dimensional defects in spacetime) as weaponry, and it made me interested to make the most feasible way to weaponise them. Of course, I ...
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7answers
586 views

Hard sci-fi super weapons?

So in my questions about the intergalactic highway and simulated ship quarters I established a universe where the navy fights a cult of alien worshipers over star gates. 500 to 700 years in the future....
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3answers
129 views

How would nanobot replicators affect the economy? [closed]

So the year is 2150 and the first nanobot replicator has been released on the market. They cost about $150 and can produce a cubic foot of material. They can replicate any object that is scanned or ...
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5answers
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Would laser weapons have significant recoil?

I was bumming around Reddit the other day when I came across a discussion talking about how laser guns in Warhammer 40,000 have appreciable recoil, enough that a laser sniper rifle was described as ...
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1answer
63 views

Data and Processing Power of Multiple Telescope Array

I've been looking at the idea of Multiple Telescope Arrays, but there's an aspect I can't quite figure out. I have the angular resolution part down, and it's absolutely nuts how far away you can see ...
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14answers
6k 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 ...
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1answer
58 views

What unexplained or difficult to explain phenomena in our universe could be used to power magic in a parallel universe?

In the land of the Kahvoren the Entrancement of Genud Before Repentance dance to the ancient tunes of frenzy and death. With cries splitting the sky the Kahvoren circle the Chosen, the noble born bred ...
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2answers
67 views

Best Superpowers Gained From Arthopod Essence? [closed]

Please assume the following: Humans were taken by aliens and relocated to another planet. They have no memory of this event. High oxygen levels and alien alterations (which made them capable of ...
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1answer
158 views

Simulated warship quarters?

This universe is 500 to 700 years in the future. Navy vessels are a kilometer long cylinder with rotating hab rings. The main cylinder is basically a railgun, reactors and a bunch a nuclear missiles. ...
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2answers
127 views

What is something that could make steel flexible through infusion?

I am looking to make robot parts out of steel. Parts should be bendable with the help of science. Answer should deliver permanent deformable steel parts to facilitate fast, acrobatic movements for an ...
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15answers
7k views

What would be the most efficient and cost effective way to stop a star's nuclear fusion ('kill it')?

I want a group of freelancers on a spaceship to stop a star from functioning. No government funding and they have to get creative. What would be the cheapest way for them to achieve this? I know we ...
4
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1answer
120 views

What Would The Result of Tangible Chaos Be On The Military?

Backup Information: This world is similar to ours, but it has a substance called Desonia that acts as a manifestation of chaos. Once damaged, Desonia integrates itself into whatever damaged it. If an ...
2
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1answer
83 views

Planet covered in non-Newtonian fluid

Basically, I watched that horrible holiday special. The animated short that introduced our friend Boba Fett, and there’s a planet that’s apparently covered completely by a non-Newtonian fluid. What ...
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1answer
90 views

A black hole prison?

In the past a war between an entity and a race that controlled the galaxy ended when the elders of that race sacrificed themselves to imprison that entity. They trapped the entity in a 100X50 square ...
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3answers
147 views

Advantage of miniguns being military standard?

I'm writing a sci fi fiction based on mass effect, different from the series though. In it I've made humans terrified of an alien invasion/genocide so they focus on firepower/rate of fire or both. ...
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3answers
149 views

Rebuilding a collapsed empire

I am making a galaxy where humans have reached an age where everything is peaceful and paradise, like spanning thousands of planets. However, a disaster happened that caused all the worlds to be ...
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5answers
159 views

What kind of catastrophe could wipe out a country's human population without harming its ecosystems?

In the backstory of my universe, China ceased to exist as a country sometime around the 2010s as a result of the CCP trying to meddle with alien technology in an attempt to accelerate its efforts at ...
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1answer
43 views

Controling Clones through Protein Deletion

I have a clone army. One of the measures I use to control this clone army is a missing gene needed for synthesis of a protein. They remain loyal, they receive the protein, they continue to live. I ...
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6answers
2k views

How to effectively defeat an alien “infection”?

I was thinking on the classic alien mass which spreads throught almost any surface, and in contact with live beings, it doesn't consumes them, but takes control of their minds in order to vary the ...
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3answers
679 views

How long does Kessler Syndrome last?

I realise this about as useful as asking "how long is a piece of string?" but bear with and I will attempt to set parameters. OK, so there has been an apocaplyse and now, at the time of my ...
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22answers
4k views

Can you have a Clarketech artifact that you can replicate but cannot comprehend?

Godlike-powerful ancient aliens have vanished from the galaxy for unknown reasons and left behind various artifacts. Millions of years later, lesser species had found these artifacts and discovered ...
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20answers
6k views

My planet has a long period orbit. How can I make the seasons change faster in order to shorten the length of a calendar year on it?

I wanted a habitable planet around a binary star system, so I conjured up a system that let me have one. The problem that I'm facing is that the goldilocks orbital parameters for this planed ended up ...
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3answers
148 views

What would a prison on a space station or huge ship in Lower Earth Orbit be Called? [closed]

What would the proper term be for the Brig/Prison/Jail where someone gets thrown for a crime on a giant space station or ship? Any idea what the interrogation room for such a ship would be called (if ...
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1answer
51 views

Self sustainable armosphere on immaginary earth surface coring

Let's immagine that for example australia is torn from the surface of the earth and enclosed on a giant dome. Is the green density enough to self sustain humans survived in that dome? Is vegetation in ...
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9answers
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If a scientist were to compare the blood of a human and a vampire, what would be the difference (if any)?

I tried to stick with vampire folklore and the various movies/shows about vampires when I thought of how vampires would be like if they really existed, but I also wanted to keep it as realistic as ...
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4answers
233 views

What happens if Earth has 12 months of 45 days due to longer orbit?

OK, so something happened to Earth, huge cosmic calamity type thing, and now Earth's orbit is longer. My story is set 100 years after this event, and everyone has had a pretty hard memory wipe as to ...
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6answers
736 views

A near-future traveler wants to become a hero among a medieval society, what gear he would wear? [closed]

It is somewhere from 20 to 80 years in the future, humans have discovered alternative reality hopping technology, that allowed them to visit different worlds. One such visitor needs to become the ...
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2answers
170 views

How can I cool the body of a human such that it can see Long wavelength IR light without its eyes glowing

The protagonist in my world has its eyes and subsequently its brain altered (genetic alterations from conception) in such a way as to allow it to see into the UV and IR range via the addition of new ...
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10answers
3k views

Cockpit or Bridge?

Would a mid-sized transport spaceship (able to carry up to two hundred people, including crew and a fair amount of supplies - enough to survive in space for up to a couple of weeks, if need be) have a ...
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4answers
243 views

Modern-day Roman Empire [duplicate]

Before asking the question, let me give you some background. I am a big fan of Roman history, everything from the gladiators of the Colosseum to the writings Seneca, and the other day I was thinking ...
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6answers
1k views

Relative value of Biological Humans vs Uploaded Humans

Imagine both humans uploaded into computer networks and biological humans exist in the same society. The uploaded humans have the normal range of human personalities (not an evil-AI-takes-over-the-...
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2answers
420 views

How much of the solar system would be damaged if the earth was destroyed by lightspeed ship collision?

If a large spaceship travelling at near-lightspeed hit the earth and destroyed it, how far into the system would the devastation travel? Would colonies on Mars and Venus (and perhaps ships in orbit ...
3
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2answers
127 views

Is there any way to control people by sending electrical signals to the body “wirelessly”?

I'm writing a story and one of the characters can control other people with electricity sent to their nervous systems without physical contact; that is, to be able to force control their body without ...
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17answers
4k views

How would Earth turn into debris drifting through space without everything at its surface being destroyed in the process?

Consider planet Earth in a distant future. Human technology has advanced, although it still respects the currently known laws of physics. I am trying to build a story where: An Event makes it so the ...
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17answers
5k views

In the far future would weaponizing the sun or parts of it be possible?

Lets assume we are dealing with a futuristic setting set several thousand years in the future with major galactic empires controlling thousands of systems and producing all sort of things that we can ...
2
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2answers
206 views

Enhanced Nuclear Fission Weapons: Casaba Howitzers VS Nuclear-Pumped Laser

So, after finding the answer to why not all fissile material is used in a nuclear fission bomb (being blown in multiple directions), I thought that to solve this, the blast should be more focused and ...
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1answer
253 views

What kind of wounds would a pulsed laser weapon really create?

Lasers and other heat-based weapons in sci-fi are often misrepresented in how they deal damage. A common reaction to heat based weapons like lightsabers, laser rifles and plasmaweapons is to say they ...
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2answers
173 views

Deuterium Fusion Reactor + Direct Energy Conversion - what sort of stuff would this sort of reactor need?

Looking at 3D Modeling a Deuterium Fusion laser-based reactor that outputs to a direct-energy conversion (tube or something?) based off Halo lore. (WIP fan project of mine, modeling a UNSC ship from ...
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2answers
478 views

Possibility of forced thinking [closed]

Would it be possible to electrically trigger the brain to do certain things? For example, if you shock a muscle in just the right place, it contracts. Could a similar practice be done on a brain to ...
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4answers
1k views

Does this magic system violate the laws of physics?

I’m writing a story and the summary is extra universal aliens going to war with each other The magic system used is Clarketech known as the void system it’s more or less based on this formula Magic = ...
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1answer
51 views

Each industry in a town (maybe a bigger area) controlled by a single robot and its team? [closed]

In the future, after some apocalyptic events and a lot of bad luck, humankind has risen thanks to robots. In the town where the story happens, each industry (paper-making industry, wood industry, etc) ...

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