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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.

2
votes
2answers
153 views

How long a human being could live with stem cells?

I once saw an experiment with mice, where they connected the bloodstream of a younger mouse to the bloodstream of an older mouse. And the older mouse became "younger", or at least healthier. If I ...
12
votes
1answer
129 views

Realistic Landmass Formation on Torus-Shaped Planet

Having recently discovered that torus-shaped planets can actually form, I've started to consider using that design as a setting for a map(no real purpose in mind, just map making for the sake of it). ...
-2
votes
2answers
94 views

Forced Evolution to Turn a Class I to a Class III civilization [closed]

So here's my idea: Every 2 years the class I civilization is inspected by an outside Class III civilization. If the Class I civilization has made progress then they will move on. If the Class I ...
5
votes
1answer
119 views

Determining factor(s) for making creatures robust to square cubed law

Premise and research I am simply trying to find a reproducible framework for use with creature-design. In my research I have found the larger an animal is, the more likely that animal is to break its ...
-2
votes
2answers
119 views

Would Human Hair Be an Electrical Conductor or an Insulator

So in my world it is the future and ALMOST ALL NATURAL METALS are gone. They needed power to get delivered in some form. One scientist thought up a solution: Human hair. The science community was ...
1
vote
3answers
188 views

Can a civilization arise around insect cultivation

Unnecessary Setup In my story, a race of gods arrive in our solar system from the far flung colonies of a Type III civilization. When they arrive at Earth and see the rise of hominids, they split ...
1
vote
3answers
192 views

Must Make a Major Modification of Medieval Metallurgy

The scene: Earth, but with a single major modification, the addition of a HUGE quantity of a single element to the Earth's crust (bringing it up to the same abundance as Iron in the crust). The ...
3
votes
1answer
83 views

Laser Induced Plasma Channel Inspired Gun

The idea is for a gun that was manufactured by revolting mining colonists from existing mining lasers, as such a weapon would be easily procured from their own resources. The weapon itself would be ...
17
votes
8answers
956 views

Maximum Personal Time-field Speed?

One day, you suddenly get superpowers! Whoo-hoo, you can speed up or slow down the flow of time for yourself. This means you can run faster than a jet, right? So you decide to test it out. You go ...
7
votes
3answers
187 views

Can black algae promote a global warming on a cold planet?

My world is at the outer edge of the habitable zone. There is enough heat and geological activity to start life, but a snowball earth is looming and threatens to freeze it all. There is some spring ...
170
votes
19answers
29k views

Russian Dolls - How do they reproduce?

Warning picture showing dissected Russian Doll My theory I believe that Russian Dolls reproduce asexually. They are born pregnant. At the time of birth, the outer doll dies. What is now the outer ...
6
votes
4answers
220 views

Is the size of a portal going to limit the propagation of gravity through it?

It's a general question but my specific concern is whether different planets would crash into each other if a portal is made between them. We're assuming bare, naked, "hole in space" portals. This ...
2
votes
4answers
176 views

Is it plausible that a world could develop that focused on the hard sciences and not the soft sciences? [closed]

I am new to this so I may ask this question wrong or without enough detail. The world I am creating goes like this: Humans developed to the point that robots run basically everything via A. I.s. As a ...
6
votes
4answers
752 views

Literal light infantry, are these advantages and disadvantages feasible? [closed]

I'm trying to determine the feasibility of some advantages and disadvantages of literal light infantry. This type of infantry is basically the same as the rest but weighs much less. To truly ...
6
votes
4answers
1k views

A mass manipulation tech - possible?

Idea I'm interested in exploring the following concept: people have discovered a certain kind of matter, let's call it "Unobtanium" (as it always goes). Unobtanium actually has mass and is comprised ...
5
votes
2answers
176 views

Verbally communicating with a no-lips, no-nosed, spiked tooth alien

In my world, humans encounter an alien species. They want to communicate verbally with each other, so I'd like to know what sounds could be shared by both species. The species has no/very thin lips, ...
0
votes
1answer
84 views

Could a synchronously-rotating planet in the goldilocks zone exist? [duplicate]

An earth like planet in terms of lots of water and an atmosphere. The liquid water on the sunny side would evaporate due to the extreme heat and the snow and ice on the dark side would never melt due ...
4
votes
1answer
169 views

Floating cities with a new superconductor v2

I made a question regarding floating cities coming from a misunderstanding of this great answer. Luckily one comment showed me how floating cities could be possible in a slightly different scenario. ...
1
vote
3answers
139 views

Self selective breeding humans [closed]

Many dogs, as well as other animals, were bred to the point of becoming nothing but mere tools or toys. For example, wolves certainly were already strong, fast, or intelligent creatures but some ...
4
votes
2answers
484 views

What kind of science could be done in a station orbiting black hole [closed]

I am writing a script for science fiction RPG where everything takes place in a science station orbiting a black hole just outside the Schwarzschild radius. But it occurred to me I have no idea what ...
10
votes
5answers
2k views

Is there a reason for a humanoid species to be 'biologically' matriarchal with females being slightly more dominant than the males?

Following my last question asked regarding oviparous humanoids, is there a way for evolution to 'regard' females as the more dominant gender without going down that road, forming a heavily matriarchal ...
0
votes
0answers
32 views

How would humans adapt to be better suited to flight? [duplicate]

My main OC, I was thinking, could have some sort of jet pack/ propulsion device to be able to fly etc. But having recently read some articles about the barriers and the obstacles preventing humans ...
24
votes
17answers
7k views

Need a specific event that wrecks the surface, allows the race to survive in bunkers, and affords an aftermath suitable for them to rebuild

One rule: it cannot be caused by aliens or AI invading the planet. But it is okay if an alien race causes the destruction in any other way. It's an Earth-like planet. I need the effects of the ...
2
votes
0answers
72 views

What are the effects of mass extinction? [closed]

In an “Ancient Greek” technological world a magical plague causes the extinction of all animals larger than a chicken, or say 5lbs/2kg. Some Humans and small animals (cats and dogs) survive this by ...
8
votes
5answers
299 views

Is there a way for human-sized oviparous humanoid mammals to produce young in eggs without going the full marsupial route?

As per my last two questions asked, I still have a niggling query left regarding a humanoid species in production. To further support their matriarchal theme through evolution, I have decided to make ...
5
votes
2answers
457 views

What alterations without drastically altering their humanoid shape nor horns, can I make to my species that lower the risk of neck snapping?

continuing from the question I had asked yesterday, I have had another query come to mind. For my humanoid alien species to possess horns, it would surely put forward the risk of being the shortcut to ...
7
votes
3answers
515 views

Aliens selectively breed humans to be bigger. How big could they get and still look human?

Can we go from this: to this: Suppose over millennia (or as long as it takes) humans on Earth are artificially selected by aliens to be big and healthy. Is there any theoretical reason that they ...
4
votes
2answers
129 views

How would the anatomy of a metal-eating bug work out?

Background: The creature is bug-like, and similar to an armadillo in size. Its diet consists of metal, and is found underground in large colonies. It uses the metal it ingests to: Enhance it's shell ...
6
votes
4answers
236 views

Is it plausible for a being to possess a singular halo-shaped 'horn', while other members of the species possess two 'regular horns'?

I am currently working a humanoid roughly deer-like species in a sci-fi roleplay setting, and one of the developments I have had with such species has me stuck trying to explain it in a way that makes ...
4
votes
3answers
195 views

What kinds of minerals or compounds could radiate heat?

I'm working on an RPG in a world with some magical elements, like a type of energy (so far unnamed) inherent in animals and humans. Those with high amounts of this life energy in them are thought of ...
6
votes
2answers
531 views

Weaponising the Tesla earthquake machine or modern equivalent

In 1935 at his annual birthday party/press meeting a 79-year-old Tesla related a story where he claimed a version of his mechanical oscillator caused extreme vibrations in structures and even an ...
4
votes
3answers
1k views

What is the Habitable Zone of a Red Dwarf star?

This question is pretty straightforward: What is the minimum and maximum distance for a planet to be in the habitable zone of an average sized (not biggest, not smallest) Red Dwarf star?
0
votes
1answer
148 views

How would immersion in water affect a gas-mask?

As he debuted his super hero career as an unlicensed superhero, my main character always wears a gas-mask to conceal his identity and protect himself against tear-gas from police force. Before ...
3
votes
4answers
193 views

How wide would a Whipple shield on spacecraft traveling at near-luminal speeds need to be?

I was thinking about the classic beanpole design for interstellar travel. Wouldn't the Whipple shield need to be at least twice as wide as the ship is long to fully protect it from collisions with ...
6
votes
2answers
192 views

Can I contain and control a small black hole within a facility?

A black hole is supposed to suck in everything by nature. Micro black holes are theorized to "fizz out", so for example if one was on Earth it would not grow until Earth was consumed. It would seem ...
17
votes
9answers
4k views

How difficult would it be to turn the Asteroid Belt into a single body? What's the best method?

The Emperor (may he live forever) plans to visit the Solar System on a rare royal visit in ten years' time. The Bureau for Interplanetary Tidying have decided that the Asteroid Belt is an eyesore that ...
0
votes
1answer
182 views

Would these structural reinforcements improve dragon wings?

So, I have devoted an unhealthy amount of my time to the dragon question, and a final solution will have to wait... for several thousand years at least. My original plan was to make them at around ...
31
votes
2answers
3k views

Earth becomes a rogue planet - how long can Iceland hold out?

Inspired by this question and my comment on one of the answers. If the earth were flung out of the solar system, it would rapidly become far too cold for any unprotected life to survive on the ...
1
vote
1answer
119 views

How fast can directed evolution make the leap from unicellular to fishlike ability level? [closed]

Premise target: A few thousands of intelligent machine-scientists have been tasked on the creation of an organism with the abilities of an animal. The exact requirements that they are given are: Can ...
7
votes
1answer
209 views

What is a realistic computational limit for a handtool-made mechanic computer?

This question here brought up interesting points on what kind of distribution we could expect for the increase in computational power of mechanical computers in a world relying solely on such non-...
8
votes
7answers
1k views

How can an individual with Superman like powers best harvest asteroids?

In a story I am writing there is a being with Superman level strength, flight, the ability to produce lasers, and survive in space. He has decided to solve the mineral crisis by finding and grabbing ...
6
votes
9answers
3k views

Conquering the Galaxy with DNA - What is the best vector?

An evil emperor wants to conquer the Galaxy. Before sending humans he wants to send out an advance force that will subdue other life-forms. The Emperor's Adviser comes up with the idea that the ...
17
votes
4answers
355 views

Is a coral-based planet possible?

Inspired by this answer and the mention of a hyperbolic plane, I've been imagining a world based on that geometry. The closest real-world example of such a geometry I can come up with is hard coral. ...
10
votes
4answers
2k views

Could we use both speed and heat to penetrate Europa's ice?

Could we fire a heavy, long (e.g., 50 meters), spear-shaped object into Europa's icy-surface from space and then, when momentum stops, gravity gradually moves weights down inside copper tubes the ...
3
votes
1answer
131 views

Modern technology in an ancient China-like world

My character has transmigrated to a world that has some magic. She is looking to bring some basic surgery and investigation methods from her earth-like world to this world, which is roughly ...
4
votes
3answers
84 views

Electrolysis Assisted Aerobic Organisms [closed]

Hi this is my 2nd question on the site and I hope it is intriguing to you all. My question is: How feasible is it for an organism to sustain an Aerobic lifestyle (ie. the standard oxygen cycle found ...
0
votes
1answer
150 views

What could be added to cigarettes to enhance soldiers?

Some of our soldiers that keep our border safe have brought back a new "commodity" used by Evorian (Border country) soldiers. They call them "cigarettes", and they have become pretty popular in our ...
18
votes
5answers
6k views

Chainsaw airplane: Feasibility study

In my dream I have been chased by a plane which had chainsaw blades instead of wings. That woke up my inner worldbuilder and instead being terrified, I started to wonder if something is even possible. ...
3
votes
5answers
161 views

How can humans naturally develop the ability to control their mental faculties while suffering the physical effects of fear?

Fear has been a helpful trait that has kept our race alive since back in the day. It continues to be necessary for survival as a species. However, it can be just as harmful. When faced with death or ...
13
votes
4answers
3k views

How tall can you build a mountain chain of bricks?

My ancient golden dragon has a lot of time, since he doesn't die of old age in my world, and a lot of magical constructs that will tirelessly built a defensive mountain chain for him. This chain will ...