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.

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8
votes
5answers
613 views

For people on earth, is it possible to harvest energy by decelerating the planet rotation?

I was working on a side project to design an alien fleet that is wandering in the universe, and harvesting energy from planets for their needs. While I can think of ways to make that happen (...
3
votes
3answers
169 views

What would happen if entropy works in reverse?

Entropy is the measure of how chaotic a system is analogous to a box containing many dices, the dices can be stacked properly together forming a cuboidal structure or scattered everywhere even outside ...
2
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2answers
115 views

Genetically engineered tendons that can store and quickly release a lot of kinetic energy?

I think I'm gonna need this one for some of my creatures who need power magnification. The basic idea is simple, I wanted a biogenic spring that can withstand tensile stress, store and quickly release ...
4
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1answer
196 views

how could a creature have a vacuum chamber inside its body

i want to know how an animal could have a vacuum inside itself (in an organ), survive, and also for it to be stable, what materials could be used to contain it, and how could it be implemented without ...
44
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9answers
11k views

How could I scientifically explain ice breath?

I'm sure there have been questions on here about fire-breathing dragons, and I recently saw a question about a lightning-breathing dragon, but back in fifth grade I wrote a 150-page story about a ...
3
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3answers
102 views

Maximum privacy VR-Communication for the super-rich

Setting is the near future - we have perfected VR/AR and can provide low-latency communication via satellites in low earth orbit. My company wants to provide a virtual conferencing service with ...
3
votes
2answers
136 views

Which countries/organizations are most likely to ensure survival on a freezing Earth?

I am writing some fiction about a freezing Earth. My previous questions about it were mostly about the physics aspects of it. After watching the Snowpiercer movie, I'd like to explore a human aspect. ...
0
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3answers
141 views

Could my Cipactlis exist?

In a world I'm designing, a group of unknown animals evolved into the fearsome Cipactlis. Some traits of these Cipactlis include: having limbs in the stance of toads and wrinkly skin, the tail fin of ...
-3
votes
2answers
81 views

Flames which are actually alive

It can reproduce, it can die, it eats and consumes. It burns all the time, it is incredibly sticky, kind of like benzin. It is made of flames but has a shape, 4 legs and long whip tail. Can such ...
19
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2answers
2k views

Is it possible to place a permanent probe on Uranus?

Before anyone points the finger saying this is a tasteless joke, there are some actual good reasons to pick that specific planet for exploration among the giants in our solar system: Smallest mass ...
0
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3answers
355 views

Humans surviving on surface without Sun

Is it possible for humans to survive on the surface of the Earth, assuming the Sun was, for some reason, not emitting any light/heat/other radiation? Would whether the Sun was actually present affect ...
0
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3answers
150 views

How could civilization deal with a prion pandemic? [closed]

Prions are misfolded proteins that cause neurodegenerative diseases. They are smaller than viruses and they are the smallest known infectous pathogen. Somehow they could reproduce on their own and the ...
3
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1answer
59 views

Does my planet's climate check out? [closed]

So as part of a worldbuilding project I've decided to write up basic specs for a fictional habitable planet and draw a map of its continents and climate, but my main concern is that I haven't quite ...
2
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2answers
57 views

Atmospheric properties of a heavier Earth-like planet

I am trying to figure out ways to determine the density and composition of an Earth-like planet. For the sake of the "experiment", let's assume that the planet is identical to Earth in every ...
15
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5answers
1k views

Scientifically plausible lightsaber

It is the time of year we all have been waiting for. Ho, ho ho! The Star Wars are around the corner! Help me design scientifically plausible light-saber: In other words: What has to happen in order ...
7
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0answers
145 views

Evolution of sexual parasitism in a species with small and intelligent females but large and “brute” males?

So, I had this idea about a sapient alien specie paritally based on the reproduction of the schistosoma A flat worm specie in which the male is notorious bigger than the female, and this have a ...
11
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6answers
1k views

Spacecraft-mounted weapons, in style

So I'm aware that the usual hard sci-fi array of spacecraft weapons generally includes self-guided missiles, rail guns, lasers, etc. However, in keeping with this spirit of hard science, I've ...
4
votes
4answers
263 views

How could this dragon-killing poison work?

So, dragons are rather large (2 meters at the withers and have a nose-to-base-of-tail length of 5 meters) creatures. Pic related by: KatePfeilschiefter They look something like pic related, albeit ...
13
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10answers
1k views

Defeating the revised Snakebot of Doom

In Weapons for a civilisation-destroying giant robot I asked about what weapons might be placed on a sixty-billion-ton fusion-powered snakebot 9.27 km long and 1.19 km in diameter, armoured with 224 ...
5
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2answers
852 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 ...
1
vote
2answers
159 views

How severe a multiple personality disorder can I impose on all inhabitants of a world without overt risk of a failed state?

Everyone should have multiple personality disorder. Here, I'm trying to make an educated decision as to whether there is a certain degree of severity that would be realistic/sustainable yet still ...
3
votes
1answer
117 views

Orbital Warfare Maneuvers

So lately I’ve been re-rereading (again) some of the articles on Atomic Rockets and I was metaphorically struck by the idea of orbital combat as presented on the site. To summarize, it involves using ...
3
votes
2answers
90 views

How would a human body behave if the atmosphere pressure were 2Atm at the sea level?

I am wondering if on an otherwise Earth-like planet the atmosphere pressure were constantly 2Atm at the sea level, how would a human body behave if we landed there? Suppose the air composition would ...
5
votes
6answers
243 views

What is the most energy efficient mode of travel by a land animal on a terrestrial planet with 0.1g at surface?

Imagine there is a planet similar to Earth but has a much lower density, the gravitational acceleration at mean sea level is approximately a tenth of Earth's. I am wondering how would a land animal ...
7
votes
3answers
210 views

What are good lower and upper bounds on year length for habitable planets?

In science fiction dealing with multiple intelligent species, "year" is still often used as a unit of time - like when describing a character's age - even when dealing with species that ...
20
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14answers
8k views

How do you “devolve” a species?

I am writing a story where a species undergoes devolution. Is there any scientific or plausible way to do this? The process can be instantaneous or may take ages, I do not mind which as I need to ...
41
votes
10answers
8k views

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

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 ...
10
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5answers
866 views

Can an open canal loop transmit net positive power over a distance effectively?

I’m designing a society in a hostile climate which transports its energy from remote stations to a city with an absolute minimum of maintenance and infrastructure requirements. The concept is to use a ...
14
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6answers
2k views

How would knights train in a world with rideable dragons?

In a world with rideable dragons, what skills would you look for in a knight, and how would they train for it? For this question, let's assume: castles modified based on the accepted answer from How ...
2
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3answers
92 views

Warhammer homonculi grow edged weapons out of their own bodies. What should those be made out of?

As I mentioned before, dragons would be too goofy, werewolves are closer to oversized dogs, while lizardfolk are now finally part of the standard fantasy races. These creatures are more cool than ...
2
votes
1answer
70 views

Organic piezo-electric generation

Piezo-electric quarts are crystals used in watches, lighters, etc. to convert elastic energy into electrical charge (and vice versa) by compressing or expanding the spaces between bonds in the ...
6
votes
5answers
336 views

Powerful tail swipe with as little muscle as possible. How?

If you look at flying animals, they usually have small tails. For instance, giant pterosaurs. Now dragons tend to be portrayed with more devloped tails. For my dragons, their tails, and the bony spade ...
2
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2answers
182 views

Would it be possible to have an O'Neil cylinder used as a water “world” nature preserve?

Would it be possible to have an O'Neil cylinder large enough to house actual oceans and creatures like whales? What might the energy requirements be to construct this?
5
votes
3answers
134 views

How could one armor/defend against this hypothetical kinetic shell?

I know that this is an oddly specific question, but it was something I was wondering In my setting, lots of space navies field a hefty amount of kinetic weapons because energy weapons are highly power ...
14
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6answers
7k views

Could negative kelvin be achieved?

What the title says I guess. I'm looking into ways to make a plausible exotic matter source for a story with an Alcubierre drive and I think recall that I saw that there was a possibility to use ...
22
votes
7answers
5k views

Are the draw weights of 90# to 100# realistic for women archers?

I have a clan in early middle ages when both man and women of a military aristocracy train for war. All the daughters of the warriors train archery from the early age. It is expected they should be ...
19
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8answers
8k views

A secret base is built on Mars: is it noticed?

A secret society of inventors has been hiding for years. Finally, they have designed their Mars base in the year 2019! Unfortunately, they "borrowed" most of their supplies. If they were to build a ...
6
votes
6answers
632 views

How can a troglodytic society democratize braille literature?

Premise The surface of my world cannot support life. The inhabitants of my world sustain themselves off troglophauna and aquifers. I'm leaving the mechanics of where energy comes from in this shadow-...
34
votes
19answers
6k views

Which fast STL drive could not be weaponized or results in perpetual motion?

I'm looking for a slower-than-light (STL) drive for fast inter-system travel. It should make trips from one planet of a system to another (e.g. Earth, Mars, Jupiter) with sublight speed possible in a ...
1
vote
0answers
54 views

Effects on World Climate without (Most of) northwest and central Europe

So I'm considering creating a fantasy setting heavily modelled on Earth with the exception that most of what we consider Northwest and Central Europe is replaced by sea. I decided to as a reference ...
6
votes
1answer
63 views

Autonomous homonculi vs mass-produced homonculi, which one would be more restricted by the Geneva Convention?

I needed monsters for my story, but with each added "quirk", dragons became more and more like overgrown, but well-behaved, flying housecats with scales. And I also didn't want them to be &...
4
votes
5answers
239 views

Would it ever be possible to “vaccinate” against feelings/ideas/beliefs?

If we think of some world views as viruses... Would it hypothetically be possible to create a vaccine for this or, in another way, make a person immune to these views? I'm thinking racism, xenophobia, ...
85
votes
19answers
24k views

Humans can now run 40 mph. How do I keep the stupid people alive?

Let's assume that humans can now run 40 mph and the human body can handle it. I know and understand that this is not feasible, but let's just play pretend. Naturally people would have all kinds of fun,...
4
votes
4answers
212 views

Sun rising from different directions throughout a lifetime

I'm fascinated by The Dark Tower series of books by Stephen King. One of the aspects that I love most is the distortion of space and time: Roland's world is said to have "moved on", and it ...
3
votes
2answers
135 views

Difference between F type stars and our sun

I'm writing a science fiction series. I have an intelligent nation of reptilian people who live on an Earth-like planet orbiting an F-type star. This nation needs to bask in the sun. How will the ...
5
votes
2answers
181 views

The best type of reconnaissance for modern dragons?

My dergs: About the size of a large draft horse, 12-meter wingspan, human intelligence, able to talk in human languages. Scales are very tough, but an armor-piercing round from an M2 Springfield bolt-...
0
votes
2answers
204 views

What would be the ideal of beauty in a world of a completely female human species?

This is a very hard question, if well the future and sociocultural interactions are hard to predict and many times could be wrong, but with the enough antropologic investigation comparing historical ...
2
votes
2answers
104 views

In This Picture, How Far Can One Binary Orbit the Other?

In an alternate Milky Way in an alternate universe, there is a cluster of stars so dense that nights are over 60 times brighter than our full moon. In that cluster is a solar system presented (albeit ...
8
votes
4answers
269 views

Could a species of marine mammal evolve from humans?

I want to write a science fantasy novel about humans evolving into five new species. The five races are: the Groses and Grosettes (they are my Ogres) (their name comes from the french word gros/grosse ...
4
votes
4answers
323 views

Detecting an escaping Earth

Suppose that, some day, for reasons, the Earth is mysteriously accelerated prograde until it reaches escape velocity. It then starts a trajectory that will take it off of the solar system. It might ...