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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.

3
votes
2answers
115 views

Anatomically correct Guivre

The Guivre is an amphibious dragon from French mythology: Many of its aspects are typical of Western dragons, but there are two which distinguish it from others: Its breath causes disease It cannot ...
0
votes
4answers
190 views

Need help developing a weapon for destroying a dam [on hold]

I am working on a story that happens in a dystopian world where the only source of energy is Coal. I wanted to know whether it is possible to break a dam by pressurizing Dam walls with coal GAS ...
0
votes
2answers
66 views

Human wing area for gliding?

If humans had wings, let's just say in the classic angel position. It's pretty obvious that we don't have the muscles or aerodynamics to actually fly with them. I was looking at hang-gliders, and I ...
5
votes
6answers
135 views

Can a firearm stay functional in a hidden cache in a jungle in Vietnam or in Siberia for 700 years?

I'm creating a world several hundred years after an apocalypse, but am struggling to get the decay of our current civilization right. The world in short: Earth was hit by an apocalypse in the 2060 (...
1
vote
2answers
93 views

Dragon scales are foamy inside, how to make them more bullet-resistant?

The three most common properties of dragon scales are: being lightweight heat-resistance just plain resistance The first two are simple: by making the scales out of a substance similar to nacre, and ...
2
votes
2answers
73 views

How would a Type I civilization habitable planet be any different to a Type II civilization habitable planet?

This question is a different version of other questions that I have found here discussing a similar but different problem. The problem I'm facing here is about the excess or waste heat that an ...
8
votes
1answer
73 views

Using sound to swim through sand

Subarenaceous animals are those which can move long distances through dry sand - like sandfish lizards, or Dune's sandworms. The main problem they have to tackle is turning the sand immediately around ...
8
votes
6answers
848 views

Keeping the dodos out of the field

About 100 people settled in a tropical area near a seashore five years ago. They've been feeding themselves by hunting and fishing, but now they're also trying to grow crops, including hemp and corn. ...
3
votes
2answers
84 views

Let's make a thunder creature!

Let's create a creature with the ability to create a loud boom with only its body. We'll start with a terrestrial predator, that gives us a good reason as to why it needs to do this. It uses the ...
3
votes
3answers
210 views

Are there any issues with this FTL drive concept?

I asked a question earlier on here concerning Negative and Heavy Matter - hypothetical types of matter I created to have a working FTL drive. With some extra work, I’ve tweaked the concept and been ...
22
votes
7answers
3k views

What city and town structures are important in a low fantasy medieval world?

I've been working on a procedural map generator that draws cities and towns on continents and islands and I've gotten to the point where I'd like to add lists of structures to the settlements. I know ...
1
vote
2answers
111 views

Would dumping vast amounts of electric charge into a traversable wormhole be a viable way to keep the wormhole open?

It's possible to have lots of electric charge while having only a small amount of mass, and a black hole with a significant electric charge has properties that are different from one with no electric ...
32
votes
10answers
3k views

Managing heat dissipation in a magic wand

Backstory You won't believe it, but I'll tell you anyway. I'm a Level 61 wizard. If you think about it, wands aren't all that hard to use. Point, invoke, joyfully watch your enemy burn in the ...
8
votes
3answers
665 views

Appropriate liquid/solvent for life in my underground environment on Venus

Partly inspired by this question My Venusians are happy in their cloud top city when a small group somehow (with lots of handwaving) crashes to the surface, falls underground, and ends up in a hidden ...
23
votes
16answers
7k views

Can a generation ship withstand its own oxygen and daily wear for many thousands of years?

Regarding the idea of a generation ship carrying a community of people for thousands of years to another planet: Is there is any material for an engineered structure or set of systems that will ...
17
votes
9answers
5k views

What would a Dragon have to exhale to cause rain?

In a fantasy world I've been working on Dragons are venerated by many for their ability to seemingly summon rain where ever they roam. It's common for the peasantry of the south to leave offerings of ...
10
votes
1answer
118 views

Could a form of acoustic levitation be used as artificial gravity?

So I heard about this thing on vsauce a while ago, where scientists use this thing called “acoustic levitation”. They use ultrasonic frequencies to levitate various substances, for use of studying ...
4
votes
1answer
60 views

Solar insolation/flux's effect on biome diversity/richness on an alien world

The Questions I'm trying to answer three main questions: Does a three-axis biome chart make sense for my world? How productive/life-rich should a biome be given a specific level of solar flux (...
6
votes
2answers
120 views

How feasible is this gravity-altering exotic matter I’ve conceived? Would it have any unforseen consequences?

Ok so I was thinking about a way to hypothetically have undiscovered elements with bizarre properties (for unobtainium purposes). And an idea hit me: replace nucleons with heavier but stable ...
40
votes
10answers
7k views

Would life always name the light from their sun “white”

I've heard it said that white light contains all the colors in it. Our sun produces white light and that the visible spectrum is just the range we evolved to see because our atmosphere is transparent ...
0
votes
1answer
89 views

How close would a planet need to be to its star to be dangerous but still habitable with thriving civilisations? [closed]

I'm creating an alien species and want to have them a bit too close to their star but of course, don't want to kill them. They're not very advanced technology wise but they have powers caused by ...
2
votes
5answers
418 views

How does the atmosphere of this spaceship work if my brain doesn't?

I want to have air and STP (standard temperature and pressure) around my spaceship. Other properties: Objects can enter and exit it without bumping into any kind of a barrier? In fact, there doesn't ...
20
votes
10answers
4k views

Could there be a material that inverts the colours seen through it?

I had a vision of a creature that touched things, and wherever it touched, it left a mark opposite to the original colour. For example when it walked across the grass the grass had red footprints, ...
5
votes
2answers
171 views

Creating chimera virus by rogue scientist

In my world there is a rogue scientist who wants to wipe out at least 90% of humanity. He's has a sample of measles which are very contagious but he needs something new. Could he merge measles with ...
6
votes
1answer
99 views

Effect of slow rotation on winds

Given a rotation rate comparable to Venus & axial tilt like Uranus (about 90deg), what should I expect for atmospheric winds? I anticipate a stratospheric wind only, dropping to the surface at or ...
1
vote
0answers
71 views

Could you disrupt the gravity of a black hole using quadrillions of supernova explosions? [duplicate]

For context, I’m planning a novel with as much ridiculous magic as ridiculous science so, yes I know, it’s impossible but that's the fun of mixing science and magic in worldbuilding. So the situation ...
-2
votes
0answers
39 views

Life without free water? [closed]

In connection with a world that has no oceans, & possibly not free surface water, & an atmosphere 2-6x denser than Earth's, what might biology look like? A chemotroph? Something that converts ...
1
vote
1answer
101 views

Is there a formula for scaling explosive detonation velocity? (Supernova level) [closed]

For context, I’m planning a novel with as much ridiculous magic as ridiculous science so, yes I know, it’s impossible but bear with me. There is a supermassive black hole that weighs 1 trillion solar ...
11
votes
3answers
2k views

How can dragons propel their breath attacks to a long distance

So if you remember my dragons: They aren't that big (roughly a shire horse in size, but a longer neck and a tail) They use graphene in their bodies, which might or might not explain how they fly They ...
6
votes
2answers
278 views

I can break AES. Now what? [closed]

The story The protagonist (whom will be referred with a first person narrative in this question) had a friend, Eve, who was a math genius. Eve was dying of cancer. She kept her mind occupied in her ...
11
votes
2answers
278 views

Speculative Biology of a Haplodiploid Humanoid Species

In haplodiploid sex-determination system, female/diploid individuals are developed from fertilized eggs by means of sexual reproduction, while male/haploid individuals are developed from unfertilized ...
2
votes
1answer
162 views

Highest level of 1930's Technology possible [closed]

Backstory I have a character who goes back in time to plant an idea in the minds of government scientists during the 1930's. The idea is to analyze a DNA sample and recreate it for future use in the ...
8
votes
3answers
140 views

Genetic exchange between animal and plant, Elves love trees

This question has its origins in the word "dendraphile" used in a YouTube comment. It was used in an insult used by dwarves towards elves. My chain of thought then was that the dwarves would use ...
3
votes
2answers
141 views

Would an deep sea lava river be feasible?

I don't wanna reveal too much about my world, however, the basic idea is that there is a town of people who live deep underwater (they are biologically capable of doing underwater gas exchange and ...
3
votes
1answer
117 views

How do I give my planet a stronger magnetic field? Playing with variables

Let's say I have a terrestrial planet superficially like earth, except that it rotates much slower (about 10-15 days per rotation) and its atmosphere is ideally several times thicker. If I want this ...
28
votes
17answers
5k views

What food production methods would allow a metropolis like New York to become self sufficient

In my overcrowded future setting the Hegemony (government of the Earth) wants to make the metropolises of the world self sufficient when it comes to food production. What farming/food production ...
6
votes
4answers
1k views

How can a demonic viral infection spread throughout the body without being noticed?

Demonic possession occurs when an evil spirit hijacks the biological system of an organism, corrupting it and taking control of its functions. Although powerful, the possession eventually breaks down ...
7
votes
6answers
291 views

Can there be substantial darkness?

OK, OK, I know, darkness is nothing but absence of light, so there can be no substantial darkness. Darkness, on its own, doesn't exist. But, can we not get pretty close to this? Can there be ...
2
votes
2answers
114 views

Could bio-luminescent plants survive in total darkness for ~3 months annually?

If a three-month dark period was a normal, recurring, part of a 15-month calendar, and plants had evolved to be bio-luminescent, could they survive? Would only some survive and, if so, would it be ...
33
votes
16answers
8k views

Best species to breed to intelligence

I’ve included more background below, but the TL;DR is that you’re a lone immortal who’s decided to breed some species of animal to a human-level intelligence (over the course of hundreds of thousands ...
5
votes
4answers
232 views

Could a Stanford torus rotate on an additional axis to give it a diurnal cycle?

Suppose you have a regular old Stanford torus space station with a 'glass ceiling' rotating at 1.3 RPM. Put it in orbit around a star such that its axis of rotation intersects the star (in other words,...
11
votes
3answers
1k views

Would the rotation of the starfield from a ring station be too disorienting?

The Coriolis effect on a ring-shaped space station gets the most attention, but disregarding that, would the rotation of the starfield be too disorienting? A 1km radius station at 1G simulated ...
-3
votes
0answers
114 views

How to completely destroy the Earth? [closed]

At some point in the future the earth is going to be swallowed by the sun and hence completly destroyed. What could happen to, let's say, prepone earths fate? I am looking for semi-realistic ways to ...
15
votes
5answers
3k views

How could a civilization detect tachyons?

In an effort to work out a believable form of faster-than-light communications for my setting, I've ruled out a few things: wormholes (which are in use, but are too random in where they lead, to be ...
11
votes
7answers
1k views

How could a humanoid creature completely form within the span of 24 hours? [closed]

I have a strange idea, I want to reality-check. But first, there's a thing to elaborate on. So, there are these undead creatures, zombies, skeletons, Michael Jackson, who appear in large numbers ...
1
vote
1answer
62 views

Life in Jupiter-like conditions? [duplicate]

In a neighboring star system to my Conworld, there is a jupiter-sized planet that many of the species believe to harbor life. The star it is orbiting is a red dwarf, and the aforementioned "Re-Jove" ...
1
vote
2answers
103 views

When were computer components 0,2 micrometer in size? [closed]

When setting a story in the future I always try to limit the technology available. It's less enjoyable and harder to identify yourself with droney the drone than with John and Jane Doe. Currently I ...
3
votes
1answer
74 views

Physically based explanation for glowing geometric shapes found embedded in a city, visible only in IR [closed]

I'm looking for an explanation for the presence of large geometric luminescent formations that are found to be embedded in the infrastructure of a city. They must be esentially undetectable to the ...
7
votes
2answers
146 views

How to calculate rate of axial precession?

I want to start with the fact that I am by no means an astronomer, or even a hobbyist in the field. I am attempting to build a fantasy world which still reflects accepted physical laws. My problem ...
1
vote
1answer
129 views

What accommodations would a giant need?

I'm making a human female who's size was multiplied by 10. I need to know what sort of accommodations she'd need to make up for any disadvantages. This is in the modern day, so 21st-century medicine ...