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[Question] [ Follow up to [my previous question](https://worldbuilding.stackexchange.com/questions/25415/on-the-habitability-of-the-night-side-of-a-tidally-locked-planet), after botched registration. We have an Earth-like planet tidally locked to a star similar to Sirius A. The star does not belong to a binary system...
[Question] [ **How do you go about boosting an already-habitable planet's habitability?** I want to maximize biomass, hopefully cover the whole planet surface in luxuriant jungles and forests, brimming with insects, animals and (hopefully) megafauna, while the oceans are alive with kelp, invertebrates and fish of all...
[Question] [ In a thing I'm writing, the plot revolves around 'shards' fragments of a divine power that attach themselves to a rare few humans at birth- one in some many million. When that human hits a massive stress point, the shard and their body fuse together to transform them into a God/dess, able to discorporate...
[Question] [ I know living on Venus would be virtually impossible for us now. But I'm trying to picture what life would be like on the surface of such a world, and how advanced in technology a species would have to be in order to achieve it. Whatever species is on Venus obviously didn't originate there, so this Venus...
[Question] [ How probable is it that a gas giant planet made of "air" (roughly the same composition as Earth's atmosphere) could exist? What would it be like? How would it differ from Earth? [Answer] There are two parts to this question: 1. Could a massive planet amass large quantities of nitrogen and oxygen? 2. C...
[Question] [ My entry for the fortnightly topic challenge: You are a space explorer. You are visiting this weird habitable planet in the Alpha Centauri System as part if the first manned expedition to another world. You see weird things floating in the upper atmosphere/space but think nothing of it, despite how much ...
[Question] [ I'm working on a random world generator, and want to generate names for the various tribes that inhabit the world. On Earth, while different tribes and civilizations have different names, they tend to share common patterns of sounds that add regional cohesion to an area. I could randomly generate all of ...
[Question] [ In my universe, there are sixteen living species from the *Homo* genus: anatomically modern humans, therianthropes, vampires, wizards, trolls, orcs, goblins, gnomes, ogres, dwarves, giants, halflings, elves, merfolk, angels, and demons. In some species, both males and females (and by extension, intersexe...
[Question] [ **I'm designing fauna for my story and I'd like to incorporate birds but with a twist! Instead of having wings adapted for flight their legs serve that purpose.** Ordinary birds have most their muscle mass dedicated to flight which is good but leaves them very literally chicken legged. Flightless birds o...
[Question] [ In an aquatic environment that most predators developed shark-like electroreceptive organs, what would be the counteractive measures against it? [Copper shells](https://www.futurity.org/camouflage-shell-1182802-2/) can disguise electric fields, but how it would evolve naturally? Biometal scales? Late-sta...
[Question] [ Our solar system has 4 gas giants(Uranus and Neptune are technically ice giants, but who cares), which share nearly 200 moons amongst them. Yet all of these moons, even the giant ones like Ganymede, are not like their parent planet in any way. They have no hydrogen or helium, while Jupiter and Saturn are...
[Question] [ I was wondering, if a planet in similar size and mass to earth would have, from its creation, been spinning at this hypothetical planet speed limit (with it somehow staying in once piece) could life still evolve with the conditions that seem catastrophic to us? (huge disk shaped equator, from what I gat...
[Question] [ *Hello! I'm no scientist so I've reached the limit of my knowledge. I was wondering if any of you smart beans out there would be able to help me figure this out? Here are the specs of my system;* Kereiol is a 2 billion year old quiescent carbon-rich M star with a temperature of 3,100 kelvins. If it flare...
[Question] [ I'm trying to figure out a way to make this species as I envision it while still maintaining scientific realism. I want to get it as close to "yes, this could exist in the real universe" as possible. If you want a quick visual primer: something like [this](https://i.redd.it/rfjod7z299421.jpg) or [this](h...
[Question] [ The hippotragines are a small subfamily of antelopes that bear physical resemblance to horses. There are three separate genera--*Hippotragus*, *Oryx* and *Addax*. As grazers, rather than browsers, the "Hippo" in Hippotraginae refers to the slightly horse-like characteristics of body size and proportions:...
[Question] [ As stated in the title: is there any realistic way to either evolve (in our evolutionary past) or acquire via genetic engineering an immune system better than what we already have? I tried to do some research, but it looks like our current immune system is already pretty good compromise between "immunity...
[Question] [ I have a species of humanoids that spends a lot of time around fire. They are able to spark their own fires, and they have a reasonable [fire resistance](https://worldbuilding.stackexchange.com/q/126888/47918). One problem presenting itself is smoke inhalation. These humanoids are genetically engineered...
[Question] [ I am Carrion the Black Hand, lord of the Ashfields brother to Kaine!! The God king. While Kaine is busy defending against the Sun Empire's holy war, I am planning a naval invasion. The plan is to attack the Sun Empire's Golden Fleet that is anchored off the coast of the Dragon Isles, then land in White H...
[Question] [ My species of caniform-like creature has a relatively long muzzle because of its strong sense of smell. I would like to know how to give it a long muzzle with its large brain size. Members of this species primarily communicate with each other through certain electromagnetic waves, bodily scent, and occas...
[Question] [ \*\* **\* Xenobiology expedition 'Profundity': Log entry 634 \*** \*\* These things are remarkably tricky to study!! Puffer lizards live on the open salt pans of Arbslex IV (an incredibly Earthlike planet), eking out an existence by snapping up the salt flies. Mostly they’re unassuming blue grey lumps on...
[Question] [ (See diagram) Presupposing that a Rocheworld can even exist... I imagine that sunlight would work more or less the same in the atmosphere of any part of an Earth like planet that was tidally locked with a duplicate planet in a Rocheworld scenario. But what about in the area between them, where the plane...
[Question] [ I'm making a continent with a large valley, "the Great Valley is like a wound in the continent". Swamps are the dominant biome in this valley. It is surrounded by cliffs and inside of it I want there to be a fog that almost never ceases. It is large enough to cover from the equator to a temperate latitud...
[Question] [ I'm really excited that this topic actually exists here. For the past weeks I've been thinking about creating my own fantasy world - because there are not quite enough yet. My primary aim is to make "magic" plausible. Thus, it has to be actually part of the laws of nature, which makes it less magic but c...
[Question] [ So, I'm ~~Darth Sidious~~ Supreme Chancellor Palpatine, and I've finally managed to ~~seize power~~ be democratically elected emperor for life. At last, I can bring peace to the galaxy! If only it weren't for those gosh darn rebels... The worst part of it is, my generals keep sabotaging each other. They ...
[Question] [ Isogamy: "sexual reproduction by the fusion of similar gametes." Not to be confused with Isogyny, "marriage between people of similar status or age." All such species on Earth lack tissue-level organization, such as algae and fungi. What hurdles would an isogamous species need to overcome to achieve meta...
[Question] [ I'm building a world where a small subset of the population have the ability to induce rapid healing (potentially capable of sealing a large wound in seconds) by encouraging rapid cell growth. However, any fast healing has the potential of creating a long-term disease called "overgrowth", which is litera...
[Question] [ Gravity in our universe is an attractive force between bodies with mass [citation needed]. This allows matter to coalesce and form all the large scale structures we observe - planets, stars, galaxies, etc. At small scales, however, electromagnetic and nuclear interactions dominate the formation of matter...
[Question] [ According to google > > Although helium is the second most abundant element in the universe, > most of it in the Earth's atmosphere bleeds off into space. Helium > used for industrial purposes is a byproduct of natural gas production > > > and > > Helium is cryogenically distilled out of natural g...
[Question] [ I have a large capital city that is in the middle of a particularly large lake set in a standard low magic fantasy setting. In this city there is a agreement between three factions of were-creatures who run the criminal operations within the city. Werecats run the high end districts and activities, get i...
[Question] [ The setting is Earth, millions of years in our future. In this setting a species of tree has made an evolutionary leap, allowing it to bypass the water transport constraints currently thought to be the primary limiting factor for tree height in extant species. This leap occurred roughly in our 'present d...
[Question] [ **Background:** My SciFi books are set 50-100 years into the future. My combat ships use fusion for power and direct thrust. (See previous question: "[Performance envelope characteristics for a hard-sci-fi torch-ship](https://worldbuilding.stackexchange.com/questions/181093/performance-envelope-character...
[Question] [ My dragon is not large in size (around the size of a house cat), flightless, and doesn't shoot fire from its mouth, much like in popular culture, but it shoots from its **rear**. I think it's much safer that it shoots from its butt than from its mouth. Something like this: [![enter image description here...
[Question] [ Our philosophy is based on the concept of energy as a positive, because we generally live on a planet in a low energy state which does work via fuel. As such, we don’t really have articulate language for “absence of energy.” However, in electronics, we originally conceived of the absence of charged parti...
[Question] [ So I have an idea for a biome in which avian humanoids are the dominant intelligent lifeform. They live inside of trees that dwarf the redwoods of our world. The trees grow so tall and so thick (akin to a skyscraper) that they petrify from the inside out as they grow, forming a stony core a few meters fr...
[Question] [ I, Marie Leaveau, am an alternative voodoo occultist entrepreneur from Louisiana and run an underground black market called Grimm Fairy artifacts Inc. Dubbed "The Bitch Queen" by naysayers, I have been operating since the 1800s, offering my services to a wealthy clientele in the application of witchcraft...
[Question] [ This is a submission for the [Anatomically Correct Series](https://worldbuilding.meta.stackexchange.com/questions/2797/anatomically-correct-series/2798#2798]) Giant seahorses are often portrayed in fiction as being ridden by merfolk or other underwater people. [![enter image description here](https://i....
[Question] [ In FTL-free universes, interstellar travel is often done by vessels capable of continuous acceleration (the drives themselves are often magitech), which can use the effects of relativistic time dilation to "shorten" travel times. However, while we often talk about the vacuum of space, space isn't a true ...
[Question] [ Assume Earth has been wrenched out of the Sun's orbit and has become a rogue planet, with its surface equilibrium temperature falling to ~-240C. At what depth will temperatures remain "comfortable" for human life (i.e. = current surface temperature of ~15C)? 1. In areas where today the average geothermal...
[Question] [ So, to quote [pterosaur.net](http://pterosaur.net/flight.php): > > Unlike the wings of birds, the wings of pterosaurs would have tended > to change shape under aerodynamic load - something often referred to > as 'passive cambering'. Camber refers to the curvature of a wing in > cross section. Because...
[Question] [ I have a (digitigrade) quadrupedal alien creature with one of it's front limbs having a longer metatarsals, I'm trying to visualise how it would walk with this deformity for an animation. I'm having trouble with how the leg would act as the right, regular leg lifts up and moves forward since the deformed...
[Question] [ An interesting idea that popped up in my previous question on the feasibility of large scale life on a gas giant was a form of energy production similar to photosynthesis, instead absorbing the EM energy from a gas giant's magnetic field to break down chemicals in the methane, ammonia, oxygen and other n...
[Question] [ Right from the beginning, the xenarthrans--armadillos, sloths and anteaters--have been at a disadvantage. For the longest time, their home was an island continent, which made them extremely vulnerable to outside environmental changes. Case in point--the American Interchange caused by the bridging of Pana...
[Question] [ You have a material that greatly **enhances electric and magnetic sources or electro-magnetism in general**. In this world, the material, is known to be a naturally occurring liquid found in geological formations beneath the Earth's surface. It would be commonly refined into various types of fuels or bl...
[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'm ...
[Question] [ Suppose you had a tower-like mega-structure, rooted all the way into near-infinite geo-thermal energy of the Earth's crust, connected to the ocean such that water is not a limiting factor to the super-structure, and extending fully through the atmosphere into space. Is there a plausible way for this mega...
[Question] [ So one of the supernatural elements in my urban fantasy story is a system of "aura-syncing" that explains how various supernatural abilities extend to one's clothes and belongings. A full explanation can be found [here.](https://worldbuilding.stackexchange.com/questions/111135/double-checking-my-worlds-r...
[Question] [ A Dyson sphere is a spherical megastructure built around a star with the goal of capturing all of the energy output of the encased star and making that energy available to the controllers of the megastructure. Producing as much usable energy as possible is the idea. **If the encased star were artificiall...
[Question] [ I am working on a solar system for a world where I intend to place my stories. This world should work by the laws of physics as we understand them so that, even though magic is a thing that exists in this world, the world doesn't need magical hand waving. Here is info on the system that is immutable rig...
[Question] [ In my (fantasy) world, a civilization sets off a superweapon that releases so much heat that it glasses an entire desert a little smaller than our Sahara. Is this feasible without killing an entire earth-sized planet's population or worse? What would the side effects be? Edit: To clarify - The weapon bac...
[Question] [ What would happen if two spaceships with Alcubierre warp bubbles were colliding? Would the space bubble collapse? Would they reject or push each other? Would they survive it without problems? [Answer] This question is well above my metaphorical pay grade, but I would assume they would throw each othe...
[Question] [ Which direction is the best way to go if you were to have to leave Sol and travel 500 ly away to find habitable planets to set up long term colonies? Core-ward? Rim-ward? Towards the core through the Orion-Cygnus Arm? Towards the Carina-Sagitarius Arm? Is there any difference in the direction? --- ...
[Question] [ I am writing a story set in a fantasy world, with an atmosphere similar to Earth's. Would it be possibly to have a forest situated near wetlands which create radiation fog at night, which drifts into the forest and doesn't evaporate because of tree cover? This fog could be added to by ground fog from the...
[Question] [ ## Setting Humans have spent centuries investigating human consciousness, brain physiology, AI, and other technologies. We've finally figured out how to "upload" a "consciousness" (these are quoted because I don't really know what this means at this point). Personality upload is non-destructive so the or...
[Question] [ I've been reading a few articles about Earth-like planets that are both larger AND smaller than Earth itself. But size poses its own problems, thus giving the Earth-like planets their own characteristics. Two of Earth's crucial features recommended for the possibilities of life are plate tectonics, which...
[Question] [ This is inspired by [a comment by JDługosz](https://worldbuilding.stackexchange.com/questions/21508/equatorial-icecaps-and-polar-jungles-a-fantasy-or-reality#comment55038_21508). Planets change their angular velocity when they orbit stars because they follow Keplerian orbits with (typically) non-zero ecc...
[Question] [ In my fantasy world everyone has several (three?) magic powers that they're born with, and one of them could be control over plants. About 1/4 to 1/5 of the population will have this. They make the plants grow mostly however they like, though bigger projects will be harder. **Specific examples:** Giant ...
[Question] [ Consider a Banks Orbital, a space station three million kilometers in diameter, rotating once per day for 1g artificial gravity, intermediate in size between a Bishop Ring and a Niven Ring: <https://www.orionsarm.com/eg-article/4845ef5c4ca7c> I'm trying to figure out what conditions would be like if you ...
[Question] [ Some context, right off the bat: I am a mad scientist. This means that evolution has been [defenestrated](https://en.wikipedia.org/wiki/Defenestration); as such, I am not interested in determining what evolutionary pressures might lead to the adoption of such a material as a supportive structure, and nor...
[Question] [ Probably every reader/viewer of sci-fi/fantasy has at one point encountered the classic bit of trickery: *"The poison wasn't in the drink - it was in the cup!"* - I am imagining a hypothetical reverse situation. Suppose I am involved in an official ceremony with a visiting dignitary - one whom I would li...
[Question] [ A few generations back Her Glorious Majesty decreed the creation of the Imperial Rail Ways. Now, you might immediately think of steam trains and steel rails. Stop that. See, Her Majesty ruled over a large, mostly flat forest with very few rivers (but excellent groundwater thanks to a system of subsurface...
[Question] [ What we call "God" is actually a catch all term for the human consciousness, which we are all apart of. This super consciousness is connected to all human souls, and binds us together on a lower level that we are subconsciously aware of, hence some concept of God existing in all cultures. When we die, ou...
[Question] [ I've begun the laborious (but fun!) process of putting another world together. Known constraints include: * Habitable, (super-)Earth-sized, tidally-locked moon to a gas giant; the giant, where visible, is reasonably large in the sky to be rather spectacular a sight; * All land forms a single supercontine...
[Question] [ I once show a picture depicticting the idea of an ultimate solar system: [![enter image description here](https://i.stack.imgur.com/OViCq.jpg)](https://i.stack.imgur.com/OViCq.jpg) *[Image Copyright Sean Raymond](https://planetplanet.net/author/snraymond/)* In this solar system there are 8 planetary orbi...
[Question] [ We have an Earth-like planet except the tropics around the entire planet are covered with small island chains and archipelagos. No landmasses larger than Cuba appear between 35$^\circ$ N and 35$^\circ$ S. Otherwise, island density on this planet matches the size and spacing of the islands in the Caribbea...
[Question] [ The article [Why Can't All Animals Be Domesticated?](https://www.livescience.com/33870-domesticated-animals-criteria.html) on Live Science sets out a list of criteria that a species needs to meet in order to be successfully domesticated by humans. In short, that list states that to be successfully domest...
[Question] [ Inspired by the answers to [What can I add to an oxygen/nitrogen atmosphere to make it unpalatable or poisonous to humans, yet stable and breathable to local creatures?](https://worldbuilding.stackexchange.com/q/78786/29), I am building a planet that currently... * Has an iron core, for the magnetic fiel...
[Question] [ The inhabitants of my Earth-like planet live high up in the atmosphere at ~1500 meters. When they look down, I don't want them to be able to see the ground. I figure the best way to accomplish this is to have cloud cover below them. However, the cloud cover needs to *always* be there. No break, no patche...
[Question] [ **This question already has answers here**: [I'm stranded on an alien planet. How can I tell what's good to eat?](/questions/26426/im-stranded-on-an-alien-planet-how-can-i-tell-whats-good-to-eat) (7 answers) Closed 7 years ago. Imagine that humanity made a mining colony at some planet. This planet...
[Question] [ This will be a companion question for [How plausible is my monster?](https://worldbuilding.stackexchange.com/questions/51619/how-plausible-is-my-monster). My previous question dealt with a story treatment for a hard science and realistic take on Kaiju/ giant monsters. While that story does feature Kaiju ...
[Question] [ Back in highschool I had a teacher who was adamant that rocks were alive; stating things like "They reproduce when you break them". They might have been a bit on the "outthere" side, but I was thinking recently: How could a rock be considered alive? In my story, there is a particular organism called a ge...
[Question] [ I have got a big rotating space station (radius is 5 km and length is 30 km) which provides its occupants the luxury of full terran gravity and atmosphere. The biggest part of the cylinder's inner surface is covered by forest (which provides us with oxygen), small lakes, fields and farmland. Now, I have ...
[Question] [ I have my own theories, but I'ld like to hear other oppinions about how this kind of scenario could turn out. This is one part of a story I'm developing. Setting: We are talking about a medieval / fantasy setting around the year 1300-1600. At some point in the history of this world, it’s inhabitants star...
[Question] [ I'm currently world building for a novel of mine that I am currently writing. It is [steampunk](http://en.wikipedia.org/wiki/Steampunk)-themed so the technology I am going to use is steam based. Let's start this at the beginning so you might understand. At the beginning we have a mineral called Beatrice....
[Question] [ Are there any reasonably plausible alternatives to the process used by our plants on earth (Carbon Dioxide, Chlorophyll, Oxygen) around which an ecosystem could be built in a planet with a completely different atmosphere? Would every planet with life on it need to have a carbon+oxygen based life-cycle or...
[Question] [ A lot of more realistic depictions of dragons have their fire breath coming from some sort of flammable substance like a gas or liquid that their body produces and stores before they spew it that they then light to create the illusion or at least an approximation of 'breathing fire'... somehow. My questi...
[Question] [ My creature is an alien roughly 3 meters tall while standing (roughly 2,5 meters at the shoulders, with arms that can touch the ground while standing upright) and weights roughly 220 kg (roughly 485 pounds). It's overall metabolism and organs involve a potent respiratory system like that of birds and pte...
[Question] [ I have been bandying about some exotic mathematics ideas as the basis for a hard scifi setting, and I wonder what technology/alien life would "make sense," here, given the physics arising from the mathematics... The core premise is that the universe has an [infinitary logic](https://plato.stanford.edu/en...
[Question] [ I want to make an assassins competition which would involve players being presented with a number of poisons and having to identify them. I have thought of using Hellebore, Hemlock, Foxglove, Nightshade(Belladonna), and Monkshood (Wolfsbaine). The test would comprise of the five plants being present to ...
[Question] [ So, back to werewolves for a bit. Given that they're as intelligent as humans and have several enemies, they'd most likely try to become more adept in combat, one part of that is martial arts. Now, moves that don't aim to kill will most likely not, but the ones that do will definitely want to include jaw...
[Question] [ So, I've heard that above around 35% O2 concentration in Earth-like atmospheres leads to wildfires that just never go out. I'm thinking of using this like California, with its regularly occuring fires that help clear the land for new growth, but on a global scale. Every couple of years, the O2 conc. is...
[Question] [ I'm presently in the process of developing my plans for a flintlock fantasy series. It's high magic, but one form of magic in the setting, Arcane Magic, is heavily based in science. The energy that powers it, Aethyr, can bend the laws of physics but not outright break them. (You can't turn someone into a...
[Question] [ Just an idea that had me doing a lot of navel gazing. Both planets are habitable to carbon based life forms, but intelligent life on each planet evolves very differently. Eventually, the two life forms become aware of each other. It would be more of a sociological space opera than hard science. Perhaps e...
[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. For ...
[Question] [ Welcome to this fun little series, that will explore all the classic sci-fi tropes and attempts to turn them into reality with the **ALMIGHTY POWER OF SCIENCE!** Today's topic is: ## The Force Field [![enter image description here](https://i.stack.imgur.com/JDgIX.jpg)](https://i.stack.imgur.com/JDgIX.jpg...
[Question] [ The year is 1970, and the hooded man sits in the very back of an abandoned building with a mysterious object in his hands. A month ago, he had a name, a life, wishes, dreams, and aspirations. Then everything changed when he stumbled across a struggle between four-dimensional creatures during a hiatus in ...
[Question] [ I am doing some work within the setting of the *Exalted* tabletop role-playing game. In broad brush strokes, the defining feature of the world is the five elemental poles: Water (west), Wood (east), Air (north), Fire (south), and Earth (center) – the setting is on a plane rather than a globe, hence the "...
[Question] [ I am designing a world in which the biological solvent is an ammonia-water mixture and need help finding out which blood pigments (Hemoglobin, Hemocyanin etc.) would be immune to the negative effects of ammonia. I couldn't find anything about this specifically on google, so I've decided to ask. [Answe...
[Question] [ It is known that when a planet orbits very close around its star, the tidal effects will soon (on an astronomical scale) force the day and the year of the planet to have the same length, making the planet show the same face to the star (let's ignore the possibility of orbital resonance). So the body will...
[Question] [ A creature in my story was largely inspired by the xenomorphs of the Alien franchise. In wondering how long it would take one of these creatures to grow from conception to maturity, I decided to look at my original inspiration which only posed more problems. Xenomorphs develop insanely fast! Growing from...
[Question] [ I like to hear the sound of birds when I travel amongst my orbital and planetary habitats scattered around the outer system. Most of these settlements are very densely populated - what you might call arcologies in your time - and this generates heat which renders most of them tropical and subtropical cl...
[Question] [ I am working on the realism of a fictional planet which has an average temperature lower than that of the Last Glacial Maximum (LGM), and possesses a single large supercontinent rather than distributed landmasses. My research has indicated that Hadley Cells retreated equator-ward during the LGM, which wo...
[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. By C...
[Question] [ There is a lot of information on drying up a Mediterranean sized depression. However, there is not a lot of information on drowning such a large area or **what sort of habitats could exist before the flood**. eg before the [Zanclean flood](https://en.wikipedia.org/wiki/Zanclean_flood) drowned the previou...
[Question] [ I'm continuing to hash out the map of my world, using tutorials found on this site and elsewhere. In [some tutorials](https://worldbuilding.stackexchange.com/a/989/37212) the starting elevation levels of a planet are treated pretty randomly, implying that while tectonic, volcanic, or eroding activity ma...
[Question] [ In attempting to come up with a semi-reasonable method of intergalactic travel, I ended up conceiving a general method of FTL travel relying on [brane cosmology](https://en.wikipedia.org/wiki/Brane_cosmology) and the "bulk" being transversable in some way. More specifically, traveling from the brane thro...
[Question] [ **Closed**. This question needs to be more [focused](/help/closed-questions). It is not currently accepting answers. --- **Want to improve this question?** Update the question so it focuses on one problem only by [editing this post](/posts/96853/edit). Closed 6 years ago. [Improve this question](/pos...
[Question] [ *Fullmetal Alchemist (2003)* features a giant (and I mean stupidly big) cave under a large and busy metropolis. Nobody is aware of its existence, which means that at least since the city's founding (let's say 150 years) there must have been **no subsidence of any kind.** What little I know of cave-ins te...
[Question] [ If the British, under the command of John Whitelocke, had been able to capture Buenos Aires in July 1807 (after a much smaller British force was defeated the year before, following an initial victory in a private, unauthorized expedition), how would the British have proceeded with the River Plate region ...
[Question] [ **Background** Several hundred years from now, humans have successfully terraformed the Moon. It has become a fad for the rich and powerful to have exotic residences built in exotic locations. The richest person in the Solar System decides to have his built on the newly terraformed moon. You are the ar...
[Question] [ Most "realistic dragon" questions start with the premise, "given what we know about bones, muscles, and the square cube law, how close can we get to a fantasy dragon". This is a great question that has been answered numerous times before by many different authors and biologists and whatnot for fun. This ...