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[Question] [ Antimatter annihilation is the best source of energy per weight. However, antimatter is not readily available anywhere within reachable distance, it's insanely difficult to produce and contain. However, if a society with our current level of technology (or just slightly more advanced) discovered a source...
[Question] [ # Linked: [What would the conditions on a methane world be like?](https://worldbuilding.stackexchange.com/questions/14312/what-would-the-conditions-on-a-methane-world-be-like) [What would animal life on a methane world look like and how would it evolve?](https://worldbuilding.stackexchange.com/questions/...
[Question] [ By extremely high gravity, I specifically mean around 28 Gs. I recently asked [this question](https://worldbuilding.stackexchange.com/questions/5162/is-there-any-feasible-way-to-inhabit-the-sun) with regards to inhabiting the sun, and surviving in the sun's gravity seems like one of the major challenges....
[Question] [ I'm working on a project involving the evolution of life on different hypothetical habitable planets. In imagining different atmospheres on planets of different masses, I'm wondering how a planet's size might affect volcanic activity. Would a more massive rocky world have a thicker crust? And would the t...
[Question] [ In short, please provide me with a scientifically plausible biochemical scheme for how an organism can harness the energy of long-wavelength electromagnetic radiation to produce food for itself. Thank you. **Requirements of the answer:** * The organism in question should synthesize energetic compounds us...
[Question] [ Most if not all jumpjets (and jetpacks) in any genre have some kind of neural link or unexplained control mechanism that might as well be a neural link. However I want to have a controlscheme for my jumpjet with several requirements: * it has no neural link * its controlscheme is known and explained * th...
[Question] [ **This question already has answers here**: [Natural and affordable way to dye hair in medieval period?](/questions/200735/natural-and-affordable-way-to-dye-hair-in-medieval-period) (5 answers) Closed 2 years ago. * The world is a sort of medieval era place with very widespread trade, so the chara...
[Question] [ The main character in my novel-in-progress is an alien whose home planet has a yellow sky. This planet orbits Altair (an A7 main-sequence star) and has a nitrogen-oxygen atmosphere similar to Earth's, with a few notable differences: * A much higher level of water vapor, resulting in the planet being most...
[Question] [ I know I can't simply scale up insect wings and place them on a human for them to work. I am creating a race that is constituted of small humanoids with dragonfly wings. How small do I have to make this race for them to both be able to fly and have moderate (or even advanced) mental aptitude? I am lookin...
[Question] [ I'd like to randomly generate between 1 and 20 million stars for a spiral galaxy resembling our Milky Way. This is of course far fewer than our galaxy (estimated between 150 to 300 billion), but I'd like it to resemble ours in proportion. Generating the locations so that they resemble a spiral pattern wa...
[Question] [ What is a possible event${^\*}$ that would cause a spike in the speed of $^{235}$U fission and reduce its average concentration in ore worldwide? As I understand the physics of the process, it is impossible to alter the fission speed itself, but if there is a way to have a thermal neutron source in the o...
[Question] [ I was thinking of an interesting landmark to put on my conworld, and I went with the "large body of acid" trope. This lake would be about the size of Lake Superior, and near the equator. The atmosphere is very similar to Earth's, but with about 5% Argon comprising it. The underlying rock has high concent...
[Question] [ I would greatly appreciate any info or resources for building an appropriate artificial mythology for a world. For reference, I am reading "The Gods of Pegana" and I already went through the Silmarillion and the Cthulhu Mythos. I would like to do something similar for a world of mine but have trouble or...
[Question] [ The goal is to get from Earth to the Outer Solar System, preferably the Kuiper Belt, as quickly as practical, with a crew of about 12, and a not-set-in-stone dry mass around 30 tons. The characters have access to something resembling a wormhole, whose other end is in a different universe. Both mouths can...
[Question] [ I was thinking that the character would be a moderately active teenage girl that's 5"8 and 160 lbs. The speed itself is a super-power and she is otherwise a normal human. I'm defining safe as a speed that wouldn't kill or seriously injure her. [Answer] There are two ways we can look at 'safe' speeds f...
[Question] [ I have an idea for a futuristic way to travel for my Story. People get into a capsule, and it launches itself extremely fast in the air. What would be needed to make this happen for real and what complications would exist? Qualifications: The people can't die. The people must be able to be comfortable in...
[Question] [ Let's say we have an Earth-sized planet and the same general solar activity and climatology. However, the continents are much smaller, and it's effectively impossible to accomplish travel between them (due to distance, inability to navigate, lethal oceanic weather, or something). That is, any island cont...
[Question] [ I would like to create a map with the help of tectonic plates. I didn't really care before. Can tectonic plates have all possible sizes and shapes? As an extreme example, could a continent the size of Australia have three small tectonic plates colliding with each other? [Answer] Tectonic plates come i...
[Question] [ Assume that the events of this question begin in a current-day (2019) world. For the purposes of this question, let's base the scenario on Atlantis. The intelligent sea-creatures inhabiting the underwater city have decided to join the "world stage." What is a realistic path of Atlantean's forming diploma...
[Question] [ You are the leader of a far-future civilization - human or otherwise - that has endured for trillions of years doing whatever far-future civilizations do. You've surrounded stars with Matrioshka brains and gathered them up with stellar engines, pooled as much mass as you could and did all the computation...
[Question] [ I have a spaceship which is basically a cylinder a little less then a kilometer long. Attached to the ship by pylons connected to a hub is an inhabited ring which spins to produce a gravity-like effect. I want to get people from the hub up to the ship through one of the pylons. "Down" is the outside of t...
[Question] [ ## Premise The goal is to implement a bronze age version of blockchain in ancient Egypt to introduce a layer of security for the royal tombs. Tomb raiding was rampant, and at times even the legitimate successor would loot his own predecessor's tomb. Family looting aside, there were punishments for thiev...
[Question] [ 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 them an oviparous species (egg laying). Conducting my own research, I have found that a smallish ostrich-...
[Question] [ [Panotti](https://en.wikipedia.org/wiki/Panotti) so called from the Greek words πᾶν and οὖς for "all ears", were a mythical race of people, described as possessing large ears that covered their entire bodies. > > In the Natural History, Pliny writes about the strange race of people known as the Panotti ...
[Question] [ Geckos use the van der Waal force to stick to things, an effect that humans can replicate and make various materials that utilize such (like extra sticky gloves). My question is, would these work in a vacuum or near vacuum, as in space. The reason being I wish to use these instead of magnetic boots for a...
[Question] [ If I had complete control over the plant's appearance, what would be the best shape for it? I need the plant to be able to float between the clouds. It doesn't have to spend its whole life cycle floating. But it should catch as much sunlight as possible. It should be able to get moisture from the air. A ...
[Question] [ So I have been doing a lot of reading on space elevators/tethers for a SciFi book I am writing and unfortunately there doesn't seem to be a whole lot of info on building one on Mars rather than Earth or the moon. Despite some handwavium for the necessary material science, I imagine it would be quite a bi...
[Question] [ [![alien skeleton](https://i.stack.imgur.com/7rAq6.jpg)](https://i.stack.imgur.com/7rAq6.jpg) Quick sketch of how I conceptualize this creature's skeleton. Sorry for the chopped off head, the jaw design and such isn't finished. The 4 yellow bones on the tip of the neck are the base of the jaws, but it's ...
[Question] [ This is more of a general question than a query about any specific model of arcology, but to make the question easier, let’s assume the arcology is either domed or covered by some sort pyramid made from selectively permeable solar panels, has an internal land area of about 8-10 square kilometers, and inc...
[Question] [ I want to understand how the increase in population translates to order of the creation of different jobs. A very small village probably has a blacksmith, but probably does not have a jewel vendor. Essentially, how big should a village (mostly farming) be before it has a full time miller, a tanner, a ba...
[Question] [ I've been playing a lot of Deserts of Kharak lately, and I am wondering if landships depicted in game, which are essentially seagoing ships on tracks, would work in a Snowball Earth scenario. By Snowball Earth, I am using the classic Snowball Earth scenario, where all of the oceans are frozen, and the eq...
[Question] [ Within the next decade or two, Earth is attacked by an alien fleet. The various militaries have some forewarning and are able to destroy the attackers by launching most of their nuclear arsenal at the alien craft, but not before they are able to seed a fast-acting bioweapon that wipes out all unprotected...
[Question] [ Someone made the Earth. They placed man on the surface and gave them plants, animals, the waters, and the mountains to make their life compete. The Earth exists within a spherical [firmament](https://en.wikipedia.org/wiki/Firmament) upon which the Moon, planets, stars and the sun are affixed. The firmame...
[Question] [ On the Life Ball of my fantasy stories, a particular species of *delphinidae*- I call them black dolphins- have evolved and advanced at least as much as humans and other intelligent races. Among other things: * Black dolphins have a highly sophisticated language. They discuss abstract concepts, contempla...
[Question] [ I want to have 3 different habitable **BY HUMANS** planets in a single system, I don't know much about physics so I bought Universe Sandbox2 and I'm trying to build solar system with 3 habitable planets in the goldilock zone. They all have separate orbits (no Lagrange points, orbiting gas giant things). ...
[Question] [ In just over 50 years Earth military aircraft advanced from [those that hardly could stay in the air](https://en.wikipedia.org/wiki/Vickers_E.F.B.1) at a mere 70 MPH, to a [vessel](https://en.wikipedia.org/wiki/Lockheed_SR-71_Blackbird) that set a record of 2,193.2 MPH. Not only did simple speed increase...
[Question] [ I'm looking to build a "twilight" world, where days are like twilight even when the sky is clear and nights are...very dark. Cloud cover might be able to turn day to an early night. I do envision a day/night cycle and capability of supporting advanced life. Ideally, I'd like the planet to have seasons, t...
[Question] [ I've got a humanoid race living in a extremely bright and hot desert. **Would there be a plausible or realistic reason for them to develop without eyesight, due to the harsh rays of their sun?** Or, instead of eyes, developing some other form of vision (echolocation, some sort of extra sense, etc)? [A...
[Question] [ I am making a world for a story and my question involves the displacement of a new technology to replace an existing one (magical). This is a medieval fantasy world with magic, but without demi-humans(i.e. no elves, dwarves, etc.) Current level of magical technology involved the development of 'runes' to...
[Question] [ The Eternal Emperor wants to throw a party the likes of which the galaxy has never seen. The billionth anniversary of his reign is fast approaching (a mere hundred thousand years away!). He has brought the best celestial engineers in the galaxy together to create a stellar fireworks show for the party us...
[Question] [ I'm worldbuilding a continent that's mostly desertic (still trying to decide if sand or rocky desert, but definitely a hot desert). All the rain would fall on the edges of it, through a chain of mountain-ranges on all sides. I want said continent to have pockets of population, so I need to know how to di...
[Question] [ # Prologue In my current worldbuilding project, I decided to put a ban for faster than lightspeed travel, and decided that most space flights be done in slower than lightspeed travels. Assuming efficient engines had been invented in this universe (say, some sort of 80% to 90% energy efficiency), and anti...
[Question] [ I saw this [old closed question](https://physics.stackexchange.com/questions/61113/what-happens-at-the-interface-between-two-universes-with-opposite-thermodynamic) on Physics.SE and thought it would be perfect for *here*. The original author is long gone, so I thought I'll just have to post it myself. We...
[Question] [ The skeleton of the average skyscraper is steel. While it does have its advantages, they tend to get outweighed by two specific faults. One is a resistance to corrosion so poor that in a Life After People, it might stand firm for only 150 years. The other is that it's too heavy. So much, in fact, that no...
[Question] [ In my world there are rings, these rings are around 9.5 meters tall and a little around 5000 kilometres wide. Their closest point is a little over 12,000 kilometres away from the surface and under 17,000 kilometres at its farthest point. For all intents and purposes this world is the same as earth. Since...
[Question] [ I’m beginning to build a world for a story I want to write. The world consists of a planet, roughly earthsized, with a couple of natural satellites (moons), and roughly same orbit and a similar star. The difference is, if you travelled in the east-west axis you could advance infinitely without ever reach...
[Question] [ Set in the 22nd century CE, space explorations reached maturity and the farthest human colony is on one of the moon of Neptune. So far the only voice from space that we have heard comes is our own, meaning the search for extraterrestrial intelligent life continues. Every nation still don't trust each oth...
[Question] [ We have Earth. Modern Earth. Some moron with more brains than common sense designs a cordyceps strain to infect people via bites. Now we have zombies. The virus spreads across the world and in a time frame of about 6 months 75% of the global population is dead with 10% still infected, 14% healthy but sti...
[Question] [ In [Humanity gets one wish](https://worldbuilding.stackexchange.com/questions/25388/humanity-gets-one-wish), I asked how the world would react to a god-like being offering to give humanity a wish. From the responses that question got, I seem to have misjudged how much chaos and panic it would cause. Ther...
[Question] [ I'm designing a Fantasy AGE campaign and there is one place in the desert between two big kingdoms. There is a way through the desert passing though several cities. They are mostly small and serve as trading outposts, but I want them to be bigger than that: to have tunnels ways through the sand and bigge...
[Question] [ Suppose humanity lives on for the next trillions upon trillions of years. One day we'll get to a point where no useful work can be done and hence no life can exist: the heat death of the universe. But somewhere along the way we invent time travel and are able to travel back in time. Is it theoretically ...
[Question] [ What if Germany had been first to create atomic bombs in WWII? Assume they had additional scientists and resources so that none of their other research/projects was slowed down, yet they were still able to complete two functional atomic bombs (extremely similar to fatman and little boy). Assume they wou...
[Question] [ We're a lovely, ethical, near-future population of Earthlings, and prepared to begin terraforming Mars (yes, I went there: set it aside). We have just stumbled on remnants of an alien civilization that both dates to around the same time as [our Phoenicia](http://en.wikipedia.org/wiki/Phoenicia#High_poin...
[Question] [ A doctor suddenly noticed that his patient seems to be indestructible, their injection doesn't penetrate through, until they even conducted basic experiments such as small knife cuts and other blunt damages. Upon this discovery, the indestructible person was examined thoroughly, until he was really gene...
[Question] [ In my fantasy novel, magic is a natural part of the world. It is not some mystical force shrouded in mystery, but rather backed by science (though only I, the author, know it's true workings). In my world, magic is a force that by its nature changes living cells. It is similar to radiation, but differen...
[Question] [ I'm wondering if it was possible for there to be a planet pretty much exactly like earth, except the ocean isn't salt water, it's somethingelse water. Can that happen? If so, how? [Answer] Water runs throught riverbeds and subterranean aquifers. In contact with soil and rocks, various salts and subst...
[Question] [ **Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers. --- Questions about Idea Generation are off-topic because they tend to result in list answers with no objective means to compare the quality of one answer with the others. For more information, s...
[Question] [ Following up on this question, [Would Living Underground during Impact Winter be Ideal](https://worldbuilding.stackexchange.com/questions/2656/would-living-underground-during-impact-winter-be-ideal), I realized I have more questions. **I was asking about an impact winter that was caused by an asteroid an...
[Question] [ If two (or more) planets are within travel distance from each other and they often trade with each other, how likely is it that these planets cultures influence(d) each other? For example: On planet A the dominant species is cat-people who like to do cat-things like cat-nip, yarn, etc.. They trade with t...
[Question] [ ## Scenario We've got a terrestial exoplanet three times the size of Earth, 1800 light years away and with an atmosphere similar in composition to Earth's. It is determined via studies that atmosphere would be able to support terrestial life without needing any life support. More studies and in greater d...
[Question] [ In my world, a race of intelligent cephalopods have created mecha similar to the Fighting Machines from War of the Worlds (long story short; it makes sense for then as they evolved and continue to live on this worlds version of a highly mountains, jungle filled Australia). What I'm wondering is if the fl...
[Question] [ In my setting, kinetic firearms are the handheld weaponry of choice for most people, despite centuries of technological advancement (and stagnation, somewhat). These range from chemical-propelled guns to electromagnetic guns, each with their own advantages. In practice, except for specialized weapons, th...
[Question] [ (BTW this is my first question, sorry if this is bad.) So basically, in my world there is a race of octopus-like aliens who use handheld firearms, now the question is how would they design them. Now humans have effectively figured out a basic design pattern, the barrel, then the stock after the barrel an...
[Question] [ **Background:** My question would be: which bear would be the most useful for a necromancer who raises one from the dead. Since the bear is dead, temperature, stamina, injuries, aggression, all of that would be rendered moot. So a setting where most of their typical flaws are not factored in. * Would t...
[Question] [ In this setting, magic and the supernatural is real and acknowledged by wider society. Magic is a relatively rare ability; while it is still an issue to think about, it is too rare to expect all police forces to have a magic-using officer The most common form of magic is inherent magic, which takes the f...
[Question] [ So, in my world, I have a city built in a plain surrounded by a desert. The plain got to be there by magic and general hand waving and was sustained in a similar way. At some point, that stopped being possible (the one responsible died or something, it doesn’t matter), but the plain remained. So, the que...
[Question] [ I had an idea for a sci-fantasy story set in a far future where there are primitive human settlements at the base of Mauna Kea who are unaware that they're actually dwelling on the sea floor of the Pacific Ocean. The ocean surrounding the islands of Hawaii has been drained and there's an immense circular...
[Question] [ Diseases kill people by messing up with some mechanism that is necessary for life. This generally means that they have a progression - for respiratory diseases, you will have difficulty breathing for a while; Gastroenteric diseases will give you diarrhea, acidic reflux or malnourishment; Neural diseases ...
[Question] [ Normally, the human retina contains four types of light-sensitive receptors (opsins): three types of cones and one type of rods. Receptors contain proteins-chromoproteins - iodopsin in rods, rhodopsin in cones. The role of the latter in bright light is insignificant, therefore for a person there are thre...
[Question] [ Stories like The Expanse sometimes depict building colonies places like Ganymede. There's good reason to do so, but one thing has always nagged at me; how would the icy crust respond? Ganymede, Callisto and the like are all so cold that the ice in the surface is a different type of ice crystal, one hard ...
[Question] [ Scifi describes the Mars horizon as closer than on Earth since Mars is smaller. On Earth at sea we can watch sailboats gradually drop behind the horizon. The horizon also appears to us quite clearly because it is not far enough for the atmosphere to mask it (but for bad weather). How would the horizon ap...
[Question] [ I'm designing a sci-fi videogame. But I've many doubts about the hierarchical structure. On a ship "the captain" is the highest authority, directs, coordinates and controls all activities, responsible for everything and is the representative of the crew. On an interstellar journey, using a generational s...
[Question] [ I'm at the very early world building for a potential story where I have a sort of humanoid feline species that I need to have been known as expansionist and/or war-like in the past but not be aggressive in the world's present. I'm toying with the idea that the species has regular heat cycles, which were ...
[Question] [ Suppose we have a fictional water planet. Humans have discovered interstellar travel and have colonized the planet. They live in large underwater cities. Its oceans are under high pressure, say perhaps ranging from 1000 psi to pressure similar or even higher than at the bottom of the Mariana trench (some...
[Question] [ In my book series, there are basilisks that can kill people with their gaze. However, I want this to be explained scientifically instead of having to use a "because magic" cop-out. What kind of at least pseudo-scientific excuse could I use to justify people being killed just because they looked a basil...
[Question] [ The invention of the Atomic Bomb changed major conflicts basically turning them into a nuclear arms race. what I want to know is what single change would have prevent the creation of the Atomic Bomb? now such a question is quite vague and would likely get closed, therefore I list a number of disclaimers,...
[Question] [ Many stars, including the Sun, periodically display [starspots](https://en.wikipedia.org/wiki/Starspot), cooler areas of the surface associated with higher local concentrations of the stellar magnetic field. They can sometimes be a couple thousand Kelvin cooler than the surrounding regions of the stellar...
[Question] [ I want to build a habitable desert gas-giant moon and I´m not sure how little water I can give it and still get plate-tectonics instead of an Io-like lid-tectonic setup. I want plate tectonics because continental-continental divergent (East-African rift valley) and convergent (Himalayas) plate boundaries...
[Question] [ My hypothetical gas giant has five major moons. Three of those moons are icy bodies with abundant water ice and volatiles. Any of these could provide fuel for translunar spacecraft, or for spacecraft headed further afield. However, not all of these moons are created equal. One of them is much deeper into...
[Question] [ I was thinking about how an MRI uses a strong magnetic field to align the spins of hydrogen atoms in the body. What I was wondering about was if the human body experienced a magnetic field much stronger than that from an MRI, is it possible or plausible that a greater portion of the hydrogen atoms in the...
[Question] [ A holy man lives down a cylindrical well that is 2 metres in diameter. There is no water in the bottom and all the walls are of solid impermeable rock. He is protected from rain by a roof on supports. He is kept alive by the locals who believe his prayers are necessary for their well-being. They assiduou...
[Question] [ **Night/Day Cycle** I'm trying to make a fantasy world with a longer night cycle than day. With the advice of Renan, 12 hours of proper night, 4 hours of near/partial dark and 8 hours of good light. Similar to earth the cycle allows for entire planet to get moon and sun light in a day, but within the pa...
[Question] [ All hail to the Hypnotoad! [![All hail to the Hypnotoad!](https://i.stack.imgur.com/azIQs.gif)](https://i.stack.imgur.com/azIQs.gif) I am interested in creating anatomically correct Hypnotoad, mainly known from the [Futurama](https://en.wikipedia.org/wiki/Futurama) series. While in Futurama the toad itse...
[Question] [ **This question asks for hard science.** All answers to this question should be backed up by equations, empirical evidence, scientific papers, other citations, etc. Answers that do not satisfy this requirement might be removed. See [the tag description](/tags/hard-science/info) for more information. I've...
[Question] [ I've been on the worldbuilding StackExchange for a little while now and I have yet to see a specific line of questioning. How do I design and create flora for my world? As this particular question may get closed as too broad, I will narrow it down. Are there any online resources (preferably free) that I ...
[Question] [ In my fictional world I am planning to have a humanoid species living on an arctic continent, and I am wondering what type of biological adaptations a humanoid (as in, anatomically modern humans or our extinct close relatives) might need to survive in such an environment. For clarity, the continent in q...
[Question] [ ***CONTEXT/EVOLUTIONARY HISTORY*** A book that I'm currently writing called *Surge* features [an enemy faction called the Degenerates that are heavily inspired](http://tvtropes.org/pmwiki/pmwiki.php/Main/FantasyCounterpartCulture) [by the Scythians](http://arkhamhaus.com/scythian-scouts.html) (Indo-Irani...
[Question] [ There are seven planets, and each one has a different coloured sky. One has red, one has orange, all the way up to indigo and violet. Of course, they don't have a sky this colour all the time, but preferably for most of the 'daytime'. However, those aren't the only limitations. Humans must be able to sur...
[Question] [ I'm making a medieval settlement of humans that reside very close to a volcano (and maybe venture into the caves surrounding the volcano), to the point of living in the caldera itself. The humans are magically highly fire-resistant and can live there without much problem, however **I'm concerned about wh...
[Question] [ I am currently reading [an eternal golden braid](https://en.m.wikipedia.org/wiki/G%C3%B6del,_Escher,_Bach), i've gotten as far as several lengthy chapters about the brain. He talks about neurons and symbols, what 'meaning' is and there is a lot of hypothesizing going on. To me much seem like assumptions...
[Question] [ **This question asks for hard science.** All answers to this question should be backed up by equations, empirical evidence, scientific papers, other citations, etc. Answers that do not satisfy this requirement might be removed. See [the tag description](/tags/hard-science/info) for more information. I am...
[Question] [ In Georgia (Soviet Union) bacteriophages are used to to cure bacterial infection. In this [video](https://www.youtube.com/watch?v=_mm3GlUnGFk) one can see how they are produced. So it might be possible in an alternate timeline, that Paul Ehrlich came up with this in the late 19th century. The right filte...
[Question] [ My question is simple: In a world where babies are born with the knowledge of an average adult, what would happen to the childhood of the child? For example, how would this affect the learning of walking, the ability to speak, etc. We have the following assumptions: * Parents are aware of this phenomeno...
[Question] [ Since blood is a fluid tissue rich in nutritious proteins and lipids that can be taken without great effort, it looks like hematophage animals would be above carnivores in the food chain. Animal tissue (meat) has much higher energy content than plants but still needs to be broken down in proteins. Break...
[Question] [ On Earth, we experience seasons because of our planet's axial tilt. [![The Earth around the sun at each solstice and equinox](https://i.stack.imgur.com/usSHK.png)](https://i.stack.imgur.com/usSHK.png) It is a common misconception that the seasons are instead caused by our planet's distance from the sun c...
[Question] [ So, on the Planet of the Aves, [Tres' sapient crows](https://worldbuilding.stackexchange.com/questions/53098/planet-of-the-aves-low-tech-weaponry) are the dominant sapient species. Given that your average bird spends plenty of time on the wing, how intuitive would they find subsonic aerodynamics, compare...
[Question] [ Every culture has its armor and their armors always, without exception, fit in with the culture they belong to. Even more than [weapons](https://worldbuilding.stackexchange.com/questions/22176/process-for-creating-cultural-weapons), armor makes or breaks a cultures feel and theme, you would not expect to...
[Question] [ The vast, vast majority of food chains of earth use photosynthesis as a base for the food chain. But theoretically we as a community have talked about other ideas such as; Radiosynthesis (based on radioactive elements), Chemosynthesis(based on miscellaneous chemicals) and Mangetosynthesis (using Earth’s ...
[Question] [ In the story I'm writing, a gas dwarf (named Eden) is discovered in a triple star system. Its atmosphere is mainly oxygen and water based, and its gravity is slightly higher than Earth's. Unlike our gas giants, however, Eden has 2 "surfaces". The upper layer is made up of millions of floating islands hov...
[Question] [ The main reason I ask this is because my world's moons both have long periods of darkness based on their phases (see [here](https://worldbuilding.stackexchange.com/q/33563/8928)) so plant life needs to have a way to persist through such a lack of light. I know chemosynthetic bacteria can thrive without l...