Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [science-based]

For questions that require answers based on hard science, not magic or pseudo-science, but do not require scientific citations. Contrast with the hard-science and reality-check tags. Do not use this tag as the only tag on a question.

0
votes
0answers
12 views

How might clouds be produced in a large underground fantasy realm?

I'm attempting to give my fantasy world weather/clouds, (some might be light-producing to add to other light sources, so if there's a scientific way to do that, please give it to me). There are ...
2
votes
1answer
47 views

How to create a sunny atmosphere without an actual sun?

I have a large underground fantasy world which is only accessible through the Mariana Trench. I'd like to do a day/night cycle and have have a bright, sunny atmosphere part of the time, but I'm not ...
7
votes
4answers
302 views

City made of Glass in Desert?

My world has a city of glass found along the outskirts of a desert. I decided on this because sand can become glass and so it was a huge resource that could be used for building. However, the concern ...
9
votes
12answers
817 views

Stopping a Planet Cracker?

One of the issues with creating a model of space warfare that is both realistic and interesting is the ease with which one can destroy things using high-velocity kinetic kill vehicles (KKVs). For a ...
7
votes
5answers
1k views

Distance between star systems

I'm writing a story that will eventually escalate from being focused on one planet to the entire star system that planet belongs to, and finally to a big story involving the two nearest star systems ...
3
votes
1answer
52 views

How can I turn diamond into graphene?

The goverment of Africa decided that it would no longer tolerate the diamond mafia, so the corporation of DeBeers was hunted down and disbanded, to put it lightly. Now, all the diamond mines have been ...
2
votes
2answers
86 views

How can I destroy a planet with antimatter?

So I found the base of these pesky rebels on this planet and I am tasked with destroying the planet to eliminate the rebels once and for all. Unfortunately, my death star has malfunctioned and has ...
17
votes
6answers
4k views

How durable would a person need to be to survive impact at terminal velocity?

For a fantasy race, or for bio-augmented humans, how durable would they have to be to walk away from a 1000ft free fall unscathed? And how would this logically translate to other forms of durability? ...
5
votes
1answer
61 views

What kind of transports would be invented in a world with an enhancer-material?

You have a material that greatly enhances electric and magnetic sources or electro-magnetism in general. In this world, the material, is known to be a naturally occurring liquid found in geological ...
9
votes
4answers
636 views

Feasibility of a purely mechanical grayscale “computer monitor”

Based on a previous question asking about mechanical computing (Babbage engines, etc.) I wondered how a steampunk story could present the concept of a modern computer monitor in a steam-driven ...
7
votes
6answers
211 views

How can a planet full of zombies reproduce and maintain its population?

How can we have a world that is inhabited only by zombies and yet continues to be populated? For the purposes of this question, I envisage the type of zombie that has been infected by a virus, is ...
15
votes
8answers
4k views

Would Moore's Law apply to mechanical computers?

We know through the works of Babbage, Lovelace, et al. that mechanical computers (computers operating through gears, cogs, etc., and powered by steam or some other arbitrary non-electric power source) ...
-2
votes
6answers
184 views

200G to 1G environment

Let's say a human were to live most of his life in a 200 G environment but then suddenly enter a 1 g environment, What would be the effects to his body and will this give him the ability to carry ...
0
votes
4answers
241 views

What would the effects be if all power grids connected to nuclear reactors abruptly suffered catastrophic failure?

To be more specific, I mean what if every wire, every power cable and transformer on the connected grids to the nuclear power plants all ruptured at once. The transformers literally exploding, the ...
3
votes
3answers
206 views

How to use and maintain assault rifles brought to the past

A group of time-traveling soldiers ends up in 15th century Europe. They have an arsenal of either AR's or SMG's and need to use them until their resources (ammo) run out. How can they maintain the ...
1
vote
6answers
134 views

Gaining energy from draining your Happiness

In my world there is a villain who rules over the unhappy. In fact, we recently determined that he actually absorbs their happiness and uses it as energy to make himself stronger. This world does, in ...
4
votes
2answers
47 views

Stellar and magnetic parameters for creating polar radiation hazards

I've got a generally earthlike planet, but my goal is to make radiation exposure in the polar regions a much larger hazard than it is on Earth, while not being an issue in other regions. Nothing ...
6
votes
7answers
2k views

How can I turn ice into gold?

I have my eyes on this new Porsche but all I have is an unlimited supply of ice and a molecular distillery. How can I convert this ice into gold? The molecular distillery can disassemble and ...
1
vote
0answers
42 views

Is a horseshoe/co-orbital moon a good choice for my system

I've been working on a habitable moon system (Moon A) for a story, and I'm now trying to populate the other moons around the parent planet. I'm considering placing one (Moon B) in a co-orbit, ...
0
votes
2answers
87 views

How to colonize the asteroid belt within the next 50 years? [on hold]

This question is a continuation of Unprepared and Without a Homeworld. The Scenario In my previous question, I proposed a theoretical near future in which a population of 10s of thousands of people ...
1
vote
2answers
190 views

A reverse centaur walks into a bar - Why the long face?

A centaur as we all know is a horse with a human head (and torso). I would like to consider a reverse centaur, which, for the purposes of this question, I will define to be a human with a horse's ...
2
votes
6answers
254 views

Can humans be conditioned to become non-violent and forget how to defend themselves?

Okay, so here's a quick scenario. Humans over the course of time have been selected to breed based on how docile they are. The violent ones are exterminated and all outside sources have been shut out. ...
12
votes
18answers
4k views

How can a moon have an ever-changing face?

Imagine an inhabitated planet like ours with a moon of the same projected size in the sky. The moon has visible structures of colors or darker and lighter areas. Every evening when the moon gets ...
0
votes
0answers
62 views

Feasability of a biological railgun? [duplicate]

Hypothetically speaking, could an organism evolve or be engineered to develop a railgun completely organically? The way I envision it this creature would create organic electromagnetic material in ...
-3
votes
0answers
68 views

What could a scientist in my Star Wars fan fic be working on? [on hold]

Im trying to write a story about a scientist who is working on something in the era of the New Republic. He does not believe in the Force. I just need something for him to be researching. It really ...
6
votes
5answers
284 views

Unprepared and Without a Homeworld

The Scenerio In the very near future a NASA probe returns to Earth with a soil sample from an asteroid containing a strange substance able to catalyze cold fusion reactions. The economic value of ...
11
votes
13answers
2k views
+100

How could a plague that killed off the dinosaurs come back?

In my story, something pretty insane happens during the 3rd season. The common conception was that an asteroid strike contributed to the extinction to dinosaurs, but unbeknownst to all it was not a ...
2
votes
2answers
139 views

Floating cities with a new superconductor

Inspired by this great answer. There is a planet with: Floatium, a superconductor that behaves as such at 0 ºC and is found in nature. A stronger magnetic field than Earth's. In really cold areas I ...
1
vote
2answers
123 views

Destroying one of the Great Pyramids without killing the protagonist [closed]

A woman finds herself inside the Great Pyramid of Kheops when a bunch of terrorists starts blowing it down from outside. The woman manages to find a way out but before being able to leave the Pyramid,...
2
votes
4answers
189 views

How could written materials be preserved after 3000 years of history? [closed]

Premise Grandmaster Fredrietch Kalven, a researcher of lost arts, was tasked by the king to find and record all written histories of their world since the earliest writings. After many years of ...
15
votes
5answers
4k views

Using light as a barrier to block people without grilling them

We know that light exerts pressure upon matter. I'm imagining a hallway where an intense light source on one end shines towards the other end. The goal is to have the beam of light exert so much ...
3
votes
2answers
128 views

Mechanism to slow down the light emitted by an object such that it will result in inaccurate position of the object to the observer?

Let's say that there are two people named S and C. They are not far apart; less than 10 meters. Let's also assume the scenario takes place in late evening or in the night, for simplicity. Normally ...
1
vote
0answers
48 views

Can Artificial Expansion of Space Facilitate Dark Energy [closed]

Granted, not much is known about Dark Energy. Indeed, it may not even exist. What we know is that something is driving the expansion of space (understanding we do not live in a Hubble bubble). This ...
7
votes
1answer
78 views

How to create an artificial hurricane?

Imagine a civilization capable of interstellar travel and building Dyson structures, so technological advancement and energy acquisition are not a concern. They found a planet that is very Earth like....
23
votes
4answers
5k views

What happens when two flames meet from opposite sides?

What happens when two flames (whether from dragons or blowtorches) meet head on? Many films make it appears as a front where the two flames repel each other, but my intuition is that, in fact, the two ...
-1
votes
5answers
303 views

How could a civilization end up confined within walls?

In Shingeki no Kyojin humanity is confined within walls to protect them from giants on the outside. In this case, I'd like to imagine a civilization (doesn't need to be all of humanity) within a huge ...
5
votes
1answer
274 views

Iron based life

Lately I have been thinking about possible forms of life on planets that would have radically different experiences than here on Earth. I was wondering if life based on transition metals was possible ...
3
votes
1answer
139 views

Would it be possible for an animal to develop pneumatic muscles through evolution? [closed]

I have been pondering the question of how make animals stronger in unusual ways. It was during this process that it occurred to me: "Can living things naturally develop pneumatic muscle systems?" For ...
22
votes
5answers
5k views

How long would it take a body to decay and the bones to fall to the ground from a tree?

Death occurs in extremely high humidity and an average temperature of 23 C (~75 F), both of which continue for six weeks. At that time, temperature begins to fall over the course of eight weeks to an ...
4
votes
1answer
189 views

Is sleep exercise possible? [closed]

Is is possible to put someone to sleep and, while they are sleeping, attach muscle stimulating pads, causing the muscles to do work and causing exercise to be done without consciousness?
7
votes
2answers
80 views

Maximum realistic salinity level with thriving aquatic environment?

I'm trying to create a planet which environment is not immediately lethal to humans, (reasonable oxygen level) however after closer inspection turns out not to be specially Earth-like. One issues is ...
5
votes
3answers
133 views

Is it possible to create light emitting creatures using selective breeding?

Suppose I take a group of alligators select the ones that emit the highest frequency of radiation (since all living creatures emit thermal radiation), and I breed those, and get rid of the rest and ...
3
votes
2answers
145 views

What are the architectural considerations when an underwater species builds a city?

I've got a species that lives in the Southern Ocean along the Antarctic coast, and they are basically a sentient crossbreed of Orca whales and elephant seals. They are omnivores, have opposeable ...
4
votes
7answers
400 views

Most effective Faraday-Cage hat design to avoid government spying

A tin foil hat is a hat made from one or more sheets of aluminium foil, or a piece of conventional headgear lined with foil, worn in the belief or hope that it shields the brain from threats such ...
7
votes
8answers
201 views

Napoleonic Future Warfare: Technology for Ground Combat?

In a 'verse with Conveniant Interstellar Travel (in the scale of a few weeks to a few months for neighbouring star systems), the East Orion Company controls large swathes of the sector thanks to their ...
1
vote
1answer
85 views

I Need Help With Human Degenerative Disease (HDD) [closed]

I am currently working on a post-apocalyptic world where roughly 90% of humanity get infected by HDD (Human Degenerative Disease). HDD causes the human brain, gland and tissues to change quite ...
8
votes
2answers
335 views

Harvesting resources from a geostationary point 100km above sea level

Consider a planet which is entirely Earth-like. Same mass, same rotation, etc. But in this world, resource-rich objects are suspended by some phenomenon at varying altitudes up to 200km above sea ...
4
votes
1answer
296 views

Interstellar Propulsion for Hard Sci-fi Novel

Hypothetical: Hundreds of years into the future. Humanity needs to travel to exoplanets quickly. I'm aiming for hard sci-fi. What kind of propulsion can travel people at 0.1 - 0.9 lightspeed? Is it ...
7
votes
1answer
73 views

Co-orbits and Tides

I've seen many questions about tides and tidal variations on a wide variety of interesting single star, multi star, single planet, binary planet, single moon, multiple moon, and even ring system ...
7
votes
5answers
266 views

Shooting down an enemy ship at FTL speeds

In the story I'm currently working on an alien race holds the monopoly on FTL travel. They're using a modified Alcubierre drive system, powered by Negative Mass. Humanity stumbles on a source of ...