General Q&A about worldbuilding and other speculative developments that can be extrapolated from science.
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In a galaxy far far away... M6760 (I made it up) is an unusually massive neutron star billions of light years away and it is surrounded by a spherical Dyson sphere painted in new improved formula v...
DISCLAIMER: I'm new to this site and still figuring things out, this is my first question I've asked, so bear with me. Alright, this is a little hard to describe. This story I'm writing includes a...
Imagine a spaceship entering Earth's atmosphere, it has lost control of its engines and is relying on its reverse thrusters to decelerate before crashing into the Pacific ocean. So in an attempt ...
first question here (but not last I think). I'm currently thinking about ideas I have to form the base of a book I'll then write, and I need some insights/knowledge about exploration. I'm looking ...
i want to make an armor made of liquid, for example like dew accumulate and attached to the person or just dip into water and the water attached/carried on (just example), but it also condense the ...
For a certain reason, I needed two habitable similar earth-like planets very close to each other. After various information gathering, I gave up on double planet and gas giant moons, because tidal ...
It is (around here, anyway) quite well known that science does not allow the existence of kaiju, mainly because of the cube-square law. bones rip themselves out To my understanding, this boils do...
Let's have your typical fantasy world, with many races. During searching what I could do to make humans a little special, someone give me idea of letting them to be only race that have ability to d...
The cylinder is 32 km long in total, 8 km in diameter, with 3km long endcaps, resulting in a habital area with a length of 26 km (= and an area of cirka 754 km2). The main body of the cylinder is...
What metal or material could be used to make super high-pressure canisters in the 1700s? It is for use as a fuel or propellant for a piston-driven engine to power vehicles, due to the fact that a g...
The neuro strain is a virus that affects the nervous system in drastic ways. Firstly, when the host is infected, their body will grow bigger than it would have originally been but not much bigger ...
In my story Giants, humans, and a bunch of other fantasy races live along side each other and i'm curious as to what might be an effective mode of transportation for 10 foot tall Giants with Ancien...
Bronze is an alloy of copper and tin, and copper is a significantly more abundant metal in the Earth's Crust, at about 70 PPM compared to tin at 2 PPM. Because tin was the limiting factor in bro...
At speeds near the speed of light, interstellar particles and gas may affect the movement of the ship, and microscopic particles may even badly damage the ship. Would not it make sense to make the ...
I'm writing a novel set in a post post-apocalyptic world, where society on Earth collapsed a long time ago and has rebuilt itself by the time the novel starts. I need a reason to keep the people ...
"Evolve" is a game that revolves around two teams, the hunters and the monsters. The hunters job is to kill the monster and simply survive; the monsters job is to kill the hunters and survive. Ther...
So, let's say there's a white dwarf star that has recently been born (by recently, let's say about 3 million years ago) Now around that time, a rogue planet, about the same size and mass as earth, ...
With the proper composition and mass, is it possible for a planetary body to collide with Earth and embed itself onto the mantle? To clarify, while immense destruction would undoubtedly occur to t...
One popular theory to explain how Earth got its water is that it was delivered by asteroid/comet/etc. The form this theory usually takes is that many small impacts occured over a long time, each d...
I'm currently designing a world for a story that I'm writing that is based on a system of magic that deals with barriers, specifically domes. To get to the point one key characteristic is that thes...
The characters in my world use oxygen spheres like the top answer to this post (a leather balloon filled with air) to safely traverse land filled with smoke. How would you know when you are runnin...
In my fantasy setting, cyclopses are large (about the size of a rhinocerus), carnivorous humanoids. They have a single blunt horn on their forehead, which is their primary tool for taking down prey...
Background I am trying to find a design for a cylindrical habitat that would allow the enclosed cylinder to radiate heat out to space as does the Earth without using mirrors and windows. Problem ...
By that I mean, if you are travelling about on a continent on a planet with a circumference similar to the Sun, how much further would you be able to see, and would it be noticeable, without more c...
I have a species of megafaunal carnivore that are extremely mobile with territories spanning hundreds of square miles and lifespans of 120-150 years. They lay clutches of 2-3 eggs every 20-30 years...
Using our own Earth and Moon as a template is it possible for a second large body (One quarter to a third of the Moon's Size) drifting close by to be captured in a stable and permanent orbit? ...
A long time ago a group of proto-giants moved high up into a the Sodo-Himalayas. Yetis commonly live up on high mountain plains some of basic characteristics of Yetis are: are as intelligent as ...
Consider a planet with Earth like gravity but an atmosphere that is 10x what Earth has at sea level (atmospheric composition is equivalent to Earth). If the vegetation is similar to Earth's, would ...
So, there are creatures with insane regenerative abilities, like casually putting their severed head back on their neck and it's fixed in mere seconds. The reason for that is that it's not true re...
My question is: What needs to be changed or improved in the structure of human muscle fibers so that my genetically modified person can lift several tons ( from 2700 to 7000 kilograms), taking into...
What materials and what shapes should be used for struts inside a vacuum airship's envelope? The vacuum airship is a theoretical dirigible design were you replace the hydrogen/ other lifting gas w...
In 2001:A Space Odyssey, from Space Station V the Earth appears to be spinning around a center that is near the edge of the planet. Phone call from space station scene If the same station (300 met...
I'm trying to develop a realistic system with a limited understanding of astrodynamics. Is it possible to have two binary worlds capable of sustaining atmosphere and complex life orbiting one anot...
I want to write a story taking place on the natural satellite of a gas giant, with said satellite being massive enough to prevent, or at least strongly deter, space travel, such that the resources ...
This question answers the issue I was wondering about of how well an exoskeleton suit could help my characters move as normal in higher and lower gravity Could a robotic exoskeleton give humans Ear...
In the game Monster Hunter World, there is a place called the coral highlands. The coral highlands is one of the most spectacular things to look at in the game, having a resemblance to a ocean with...
We often see, in Sci-fi, food being produced from, say, algae or yeast. What could be the effect of such a limited diet on the gut microbiome? Would there be any believable side-effect that would h...
With the emergence of cyanobacteria on earth 3.5 billion years ago, the shift from a reducing to an oxidizing atmosphere began. "The atmospheric O$_\textrm{2}$ levels (in PAL; i.e., normalized to ...
The eclipse needs to be visible from at least one region on the planet every revelation and last about one hour.
You are 70 years old but you look 50, this because you have always maintained good health, mentally and physically. After experimenting with various clones before, you decide it's time for you to ...
Scenario : Due to the effects of a magical overload, there are people in my world who lose their magic. Those that don't go outright insane are left with damaged nervous systems and a high body tem...
In my setting, one of the fallouts due to interstellar war between civilisations is that a planet's gravity can be removed. This capability is part of the setting's hyperspace mechanics so the exac...
I'm in the process of naming some routes and roads in my medieval fantasy themed world, and I want to specify routes that could only be managed on foot. I'm tempted to say trails, but since every b...
Is it possible for a planetary body to have a secondary axis of rotation? For example let's say there's an Earth-like body that is spinning with its North Pole facing the Sun. Imagine that the Nort...
So in theory, I would want this planet to have the same everything as earth besides the radius (and anything that affects how radius plays into gravity). I know the density of this Planet X would h...
A federation of alien spacefaring nations is doing basically the opposite of prime directive: they are jamming the Solar System, preventing us from leaving it. They are doing so by placing some de...
This lifeform is a carbon based humanoid that uses ammonia instead of water, breathes chlorine gas, and its body uses the mineral olivine to toughen its skin. Its blood is blue; apparently an ammon...
So long ago, I asked on how to make Earth's oceans as brackish as Lyr's, one of the many worlds imagined by artist Chris Wayans. The only real answer I got was something that that world had alread...
What would happens if due to increased volume and reduced density, the global warming cause consistent loss into space of certain gases of atmosphere? What would we observe?
I am interested in the idea of a moon orbiting only the southern pole of a planet. Could it theoretically be possible (though unlikely) that a moon would, for instance, orbit a planet parallel to t...
