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I want to create a world that abides completely by our understanding of reality. The whole premise is that "If the Universe is large enough, this would all be non-fiction", assuming the laws of physics are constant everywhere. It absolutely must be 100% scrutiny-proof.
Firstly, the planet is designed to ... |
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In the Mass Effect series there's a terrestrial planet called [Dekuuna](http://masseffect.wikia.com/wiki/Dekuuna) with 10 times the mass of Earth, a surface gravity of 4G and a native intelligent race. I was just wondering if it was possible for a planet like that to exist in reality, and if yes, what ar... |
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In this fantasy world several corporate empires have found a valued liquid coming from wells in shallow ocean. With only Industrial Revolution level tech is it possible for these companies to harvest the liquid off of oil rigs or similar structures?
Note:
* The companies have near unlimited resources an... |
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In the distant future, a multinational corporation has become more powerful than any government. To deal with individual enemies of the corporation, the company created the enforcer line which specializes in robot->human combat.
The enforcers pack a variety of weapons and gadgets but the most terrifying... |
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How would it be possible to have a planet with two defining surface features, ocean and mountains? Such a planet would have to be habitable for humans who arrive there, though it does not need to support humans evolving and developing over time. Everything above sea level has to be mountains, with valley... |
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The human race is spread through the inner Solar System.
Technological and scientific progression is thriving, but we still haven't developed FTL travel, research has its focus on developing a device similar to a dyson sphere.
So, travelling from planet to planet is a safe journey, but it's still a long ... |
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I have just invented the Macguffin. It is ultimate wondrous power for anyone who is wise enough to wield it...
But humanity isn't ready for it yet. I need to put it out of reach for a significant amount of time, such that it cannot be recovered 'soon' - but that it should be recoverable at some point.
... |
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On an Earth-like planet, with the technological and cultural level of ancient Rome: **What kind of terrain would be statistically best suited for a powerful city to be located?**.
The most important aspects of this city are, in order: religion, economy and military. Below are some of the things I would ... |
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There are a number of humanoid creatures in fantasy that we more or less take for granted. Humans are almost a necessity for us to be able to relate to the story and they interact with dwarves, elves, goblins, orcs, and a plethora of other exotic humanoids. One thing often lacking in fantasy stories is h... |
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Given a planet without any relationship to Earth, what does it mean for the poles to be "north" or "south"? Is it something arbitrary that can be changed?
[Answer]
**tl;dr** - North will be whichever pole is oriented most closely to Earth's north pole.
If the planet is "without any relationship to Ea... |
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After reading hours on here, I stumbled upon alot of answers that rely on some major changes in our understanding of space and time and its tech to allow us control antimatter or some future thrusters.
From [this accepted Answer](https://worldbuilding.stackexchange.com/questions/3871/how-close-to-interst... |
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So there is a Minecraft mod that includes various oreberry bushes. One for gold, one for silver, etc. Now I know that various plants can extract specific minerals in higher quantities that what would normally be expected, so my question revolves around concentrations in the environment. If I wanted a pla... |
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The concept of a "spark" is our shorthand for an idea describing some neural nets in your body (well loosely anyway), its a catch-all for anything that can be an electrical response. Some of the electrical responses in the body include: conditioned reflexes, knowledge and memories, and involuntary reflex... |
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I'm thinking about the evolutionary history of life on a world very similar to earth in many ways, carbon based life, life began in the seas, creatures like cephalopods, and arthropods, evolve.
But, there is *something* different about the world, or something that happens that prevents anything like vert... |
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I'm worldbuilding a whimsical, leisurely world where the livin is easy. I was thinking about, "[What would put agriculture/industry on Easy Mode?](https://worldbuilding.stackexchange.com/questions/246565/what-one-change-would-put-life-on-easy-mode)"
One answer that suggests itself is increasing [photosyn... |
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Desire: In my world, I would like to have a (potentially unreasonably) large mountain range that is so large both in height and width that it is both entirely impassable, and disappears into the clouds with unseen peaks, even when viewed from miles off.
Confession: My knowledge of the science on this is ... |
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I'm designing creatures on my made up planet where animals evolved exceptional hearing and I'm wondering what kind of feet they might evolve to produce the least amount of sound when walking to avoid predators.
For some more context I imagined how life would evolve on a planet around a red dwarf with low... |
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I want to create a world where there is very little sunlight during the day -- at noon the light would be about the same as an Earth sunset. The planet would be Earth-like until something causes the sunlight to be reduced (so that life can evolve normally first).
So, what are my options? What could possi... |
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I have an earth-like planet in a fantasy setting with two moons, one of them made of crystal. It will be a fantasy crystal, properties TBD (probably by some of the answers to this question).
My main question is, would I be "ruining" night time by putting a solid crystal moon in the sky of my world? I'm n... |
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Some evil scientist, let's call him... Dr. BBEG, has manufactured a potent, powerful disease. He has full control over the bacteria's genome now, but once he releases it... not so much. However, in case some pesky group of Paladins, Wizards, and Rangers arrive and mess it up, he obviously needs a kill sw... |
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Can I eliminate a dry continental high pressure spot inland by adding a huge body of water in the middle of it? Like this sample picture:
[](https://i.stack.imgur.com/vipir.jpg)
The red arrows around the continent are warm ocean ... |
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In my continent (On Earth), there is one specific part of the land that is pretty much all covered in trash and waste, and the surrounding bodies of water are also polluted and so are part of the surrounding regions. So my question is could there be trash on one part of the land with barely any plant lif... |
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I want my planet's atmosphere to have roughly 10% argon so that its inhabitants can easily use it to color their lights purple. But I'm not sure how to explain the cause of this high argon content. Does anyone have any ideas?
Some of my ideas include argon warfare and argon-breathing plants.
Would this a... |
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I'm in the process of writing a story (just for fun with my son) that takes place somewhere around 80-100 years after an end-of-the-world event. Right now, that event is some type of plague, but that part will be secondary to the story. The story is set around 2100 or so, with very few survivors. Village... |
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Given inspiration from this post [here](https://worldbuilding.stackexchange.com/questions/120492/what-is-the-best-body-plan-to-allow-for-giant-size-in-a-terrestrial-animal), I have been working on a society of aliens in which each tribe lives on a single member of species of enormous megafauna. Let's cal... |
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Airships fly thanks to their weight. The m3 you occupy should be lighter than the m3 of whatever you want to float around in (bit of a simplification). To achieve this they make a big balloon and fill it with a light gas, making it overall lighter than air.
Theoretically a vacuum airship is thus the best... |
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Is currently hard to find a way in which classic dragons could develop and use the fire-breathing, so find a way in which this could happen for blue fire of complete combustion is even harder. Read this
[How could dragons be explained without magic?](https://worldbuilding.stackexchange.com/questions/313/... |
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So I'm setting up a setting for Genesys that I have placed in a alternate dimension inhabited by humans from ancient Greece that would build their own world according to how they perceive their previous life. I am starting with a origin story of course and have a few questions that I would like a new eye... |
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If 19th century workers needed to be working [in an environment much like](https://worldbuilding.stackexchange.com/questions/183710/how-could-we-modern-humans-get-established-on-a-hot-planet) the inside an active volcano for several hours, would they have materials to make a proximity suit to do this? As... |
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I'm imagining an artificial planet of almost pure water constructed by an advanced aquatic species. It's "almost pure" because they included enough impurities in the water for life to thrive, resulting in a composition similar to Earth's seawater. This species wants the entire volume of the planet to be ... |
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In my steampunk world (developed to roughly 1870-1910 levels of technological development), there are no oil deposits and flatlands are highly valuable due to their relative rarity (the entire thing is located on basically a humongous vertical rocky cliff, with only some ledges reaching the sizes of smal... |
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I have heard of the Chrysler TV-8 design, an amphibious armored vehicle powered by an onboard nuclear reactor...basically a nuclear-powered tank. The TV-8 never made it off the drawing board; the Corporation axed the project in 1956.
Surely there must be other ideas for nuclear-powered land vehicles out ... |
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*I asked a [similar question](https://history.stackexchange.com/questions/60643/how-did-bank-transactions-or-data-transactions-work-when-it-took-people-week) on the History Stack Exchange, but it was suggested I might get better feedback here.*
**How can you guarantee [atomicity](https://en.wikipedia.org... |
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Try to stick as close to real-life history as possible, but what would be the most logical progression which could lead to the Argentine military deploying anti-satellite weaponry? Ground, sea, or air-based options are all on the table. Bonus points if you can make it happen before the Falkland Islands W... |
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I have settings with orbital colonies around the earth. First off my idea is, if it is not profitable we would not fund it en masse. Therefore I came up with the idea that in the future we discovered that Space foundries create amazing alloys, basically near-perfect alloys - for example leading to the de... |
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I was wondering how/if it would be possible to create an earth-like (atmosphere, gravity, average temperature, etc. are close enough) rocky exoplanet with more than two or three significant temperature oscillations (like our seasons and day/night cycle). Creating basically a Game-of-Thrones esque scenari... |
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Are there any areas of space where an antimatter object, the size of a small house could survive without coming into contact with any or extremely minimal amounts of matter?
I had assumed in all areas of space the object would come into contact with enough dust and gas to make it explode/ disappear event... |
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My fantasy setting is on a wet and humid world of innumerable islands; many of which are quite mountainous.
With conditions ranging from Mediterranean to Tropical.
The culture here experience only two seasons Wet/Rainy and Dry.
Their Calendar divides the year into two seasons.
Which in turn divides eac... |
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Say you somehow invented 50 thousand nanobots that are the size of medium sized bottle caps. Each are capable of hovering for a limited amount of time but do recharge with both solar energy and plug ins.
Now say you you want to control them and make them act like a single entity, to the point in which y... |
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In traditional Elfland stories, and in C.S.Lewis' Narnia, when a character enters the alternate reality they start with their current age and age normally in that reality, but on return to their origin while they retain their memories, their age is 'corrected' to their origin calendar: some folks crumble... |
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The long fall boots are special footwear that extend from your feet to your knees. They enable you to fall from an indefinite altitude in Earth-like gravity without damaging your body when you land.
How can I create something like this? If “indefinite” is impossible, what is the maximum height that boots... |
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If a space station were to be built in the outer solar system, is there an asteroid beyond Jupiter with a ratio of rare earth elements high enough to make it worthwhile to mine for the rare earth elements, to supply this space station with those materials it needed?
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We don't know if there is ... |
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The chicxulub asteroid impact caused climate change, and the climate change caused a mass extinction. But many land-based animal groups survived, crocodillians, lizards, snakes, turtles, frogs, salamanders, birds, and mammals, including primate ancestors.
How would a radiation-based mass extinction even... |
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Many anthropologists believe that equatorial Africa became super culturally-advanced and technologically stunted compared to the rest of the Old World in large part because of
1. Lack of trade routes, and
2. An environment that was naturally suited to human occupation without need of many tools.
My st... |
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If humans were to live in an earth-like planet with an atmosphere with a significantly higher concentration of $\mathsf {CO}\_2$ (Higher than what can be tolerated by normal human for a long period of time, but otherwise with the same concentration of oxygen), what sort of modifications would they need i... |
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The People of The Shining Isles have long been exploited. They are cruelly used in mines, excavating tonne after tonne of rock and dirt in pursuit of what the Warriors from Away call ‘diamonds’. These small, shining rocks are apparently of great value to the invaders for some reason or another, though th... |
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OK, OK, I know, darkness is nothing but absence of light, so there can be no substantial darkness. Darkness, on its own, doesn't exist.
But, can we not get pretty close to this?
Can there be *something* - I don't know what, smoke, gas, clouds, fog, atmosphere, dark matter, whatever - that could be ubiqui... |
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So a friend of mine came up with an interesting question. Considering the fairly universal following facts about western-style fantasy dragons:
a) dragons can breath fire
b) dragons themselves are fireproof
c) dragons have large wings, allowing them to fly (though the actual science of this is well-known... |
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I am currently writing a story that involves the never-ending-theme of alien invasions. Assume Humans are roughly at a Type I civilization at this point. Humans have unfortunately wandered into a middle of a galactic battle, and because we always make great decisions, we chose a side to join, let's say t... |
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The civilization I'm talking about is marked in pink (cities A and B).
The trade routes are marked in yellow.
Owning the city B (the entire island) means they only need to travel across two relatively small gaps by sea, unlike other civilizations, in case they decided to get rid of the middle-man.
Could ... |
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[](https://i.stack.imgur.com/ADObV.jpg)
[Caulerpa taxifolia](https://blogs.plos.org/biologue/2015/02/13/understanding-images-a-giant-single-celled-plant/), an algae species popular with aquarium owners, is the largest single-celled organism known to us as of today.... |
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We know that Gor, or Counter-Earth, [is not stable](https://worldbuilding.stackexchange.com/a/8658/22685) in a long-term sense. Let's handwave that away, or assume that we are dealing with a temporary span of time in which the instability is immaterial.
Mid-20th to early 21st century Gor and Earth have f... |
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I just won the national lottery! I am a billionaire, and can do whatever I want with my money!
Tv interviewer asks me what would I do with this money. Then, come the Idea.
I remember this guy when I was young, Kevin, if I remember correctly. His parents were rich, way richer than mine. And therefore, he ... |
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**tl;dr** What is the strongest glass that can be concocted from a single reasonably abundant, natural source? (Without nuclear or quantum manufacturing)
So I am developing a character for a story. He has powers that are very similar to alchemy in [Full Metal Alchemist](https://en.wikipedia.org/wiki/Full... |
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I have a character (who is human) who, for his own reasons, decides to act bat-like and sleep hanging upside-down.
Handwave the feet/attachment issue.
Which parts of a human body would be affected by sleeping upside-down for 8 hours at a time?
Related: [How would a humanoid need to change to sleep upsid... |
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I need to keep a radio station running after an Apocalypse. There is no power grid of course.
Details of apocalypse are not entirely set in stone. The only rules to this question are those annotated below.
1. No zombies.
2. No power grid.
3. Those who can not listen to this broadcast slowly lose their ... |
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Is it possible for Wolverine style retractable bone claws, to work in real life? Either from the knuckles, or from the wrist (hidden blade style). How would such claws, if possible, change the appearance of the person?
If not Wolverine claws, then what other retractable claw designs are feasible in real... |
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The basis of my story revolves around a single survivor escaping a massive colony ship gone critical above the skies of an alien world. After his escape via escape pod, the ship crashes halfway across the world on a separate continent. This got me to question what events might occur if a ship as large as... |
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This is a submission for the [Anatomically Correct Series](https://worldbuilding.meta.stackexchange.com/questions/2797/anatomically-correct-series/2798#2798)
Kappa are creatures from Japan said to lurk in rivers and lakes. They are described as small humanoids resembling a cross between a monkey, a frog,... |
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If there was an island civilization, somewhere deep in the Atlantic, how would this society prevent the outside world from discovering it?
This society has been around since the Roman Empire, and is quite in touch with the outside world. They have all modern technology, except all members of this societ... |
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So recently I'm working a speculative science fiction universe where I'm trying to adhere as close as possible to the laws of physics and the possibilities of technology. I want to have mecha (because they're cool) but the square-cubed law obviously makes such things very difficult to make since current ... |
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I was doing some research on how to design a scientifically possible alien, when I came across an interesting section on metabolism. I found it very interesting and read about the weak force, as opposed to our electromagnetic radiation metabolism. I did more research on it, but all I found was a thought ... |
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I am currently in the early stages of mapping out a conlang for a race of boar-people. I was stumped trying to think of what limitations, if any, having pronounced lower tusks would have on the development of their language. These creatures do have snouts, but [this question](https://worldbuilding.stacke... |
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Is arsenic, or arsenic alloy (arsenic + lead), deadly and can it be used for weapons in medieval / classical era?
If a leader of assassins' guild wants a special (reusable) toxic weapon (from dagger to the size of small sword), Is it a good idea to make it from arsenic? (what about arrow heads from arsen... |
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In my world, there is a forest of giant trees on both poles. The trees create a canopy that is perpetually covered in ice. This frozen canopy extends so high that it supports a "land" of frozen clouds. There live the Yeti of this world.
**How strong could this frozen cloud land be?** Is it strong enough ... |
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Let's assume we have an otherwise Earth-like planet orbiting a star just like our own. Our planet has an axial tilt of 0 degrees, meaning its axis is perpendicular to its orbital plane.
Could this planet have seasons based solely on where it is in its orbit? My thought was to increase the eccentricity of... |
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So basically, a guy (criminal, fraud, con artist and generally very untrustworhy person) is involved in an accident and suffers total memory loss. He remembers absolutely nothing about his previous life. Naturally, he gets captured almost immediately and interrogation ensues. Of course, everybody thinks ... |
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Let`s suppose there is an alien supercivilization whose interstellar vessel has «exited hyperspace» in a close proximity of the Earth (i.e. a certain volume of physical space only filled with vacuum suddenly gets occupied by a macroscopic object).
Let`s also suppose there is no way to detect it by conven... |
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I was wondering would a planetary drill be possible?
The drill should go inside the planet on one side and exit on the other.
Would that kind of a drill be possible on Earth and if not on what kind of planet would it be possible?
Could it be possible with the technology we have today and if not what ki... |
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On planets of have different temperatures, conditions and chemical makeup of the lava/magma, what would be the least viscous lava around?
(Relevant to an earlier question - [What would an efficient swimming creature in magma be like?](https://worldbuilding.stackexchange.com/questions/84412/what-would-an-... |
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A quick glossary to show how the magic works:
Spell - The usage of materials to magically produce an event. Not widely used because it takes time and physical resources.
Talisman - An item that can be used to produce or amplify magic. Common, because a talisman expands a mage's range of magical abilities... |
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**My AEROSTAT CITY is under siege by space pirates!**
Picture Dubai on air pillows. I imagine a chain of a few dozen aerostat "city blocks" linked together like a pontoon bridge to form a long flexible wing, each are an industrial "pillow" with luxury residential towers on top. During the attack they wi... |
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Would it be possible that other planets, or even other random celestial bodies, contain different types of pathogens?
According to Wikipedia, the known types of pathogens are: virus, bacterium, prion, a fungus, algal or eukaryotic organisms.
So, is the universe limited to these types of pathogens, or is ... |
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In a [world](https://worldbuilding.stackexchange.com/questions/63975/what-american-animals-would-have-been-domesticated-had-they-not-gone-extinct) where man entered North and South America without causing a mass extinction, all of the paleofauna which became extinct ~10,000 BC in the Americas are still a... |
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Today, most mammals have **dichromatic vision**, meaning that they have two color receptors. Which color depends on which species you're asking. For example, the real reason bulls charge at matadors is the way they flaunt their flags--cattle CAN see color, but red does not register.
Other mammals, like d... |
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To elaborate on the title, can alien plant life on an Earth-like planet look similar to ours, or would plants on an alien planet be radically different, unrecognizable, or incomparable to Earth plants in the eyes of a human traveler?
I've heard things about different pigmentation based on what wavelength... |
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Let's imagine that people, if they'd want could freely leave Earth to pursue their own destiny on other planets etc. How far could we get assuming following:
**Assumption No. 1**: It's trivial to get any item up to 260 metric tons ( fully loaded Boeing 777F weight ) into space ( 800 km from Earth's surfa... |
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Having recently learned about the [Interplanetary Internet](https://en.wikipedia.org/wiki/Interplanetary_Internet) in development by NASA's Jet Propulsion Laboratory, and inspired by Kim Stanley Robinson's novel *2312*, I began to wonder about the actual reality of a dense information network spanning th... |
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Hunting is dangerous; even for the predator, hunting can result in death. There have been countless example where a predator was killed by what was supposed to be prey. Animals have evolved many ways to combat this; from a cat's pouch, to a wolf's pack, to a bear's size. Another idea that to my knowledge... |
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This question is very similar in intent to [this one](https://worldbuilding.stackexchange.com/questions/32657/how-would-people-tell-time-if-it-was-always-day) and merely takes place in a revised version of that world.
So, I have a civilization that lives in what could be considered a flat world. And no, ... |
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For the past few days I’ve been thinking a lot about the idea of a medieval-style siege occurring at a planetary level—that is, an aggressor attempting to “starve out” a planet by cutting off its supplies rather than attacking it directly. Here we’d assume that, for whatever reason, the aggressor does no... |
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I have a creature that, thanks to its [multiple, unique DNA chains](https://worldbuilding.stackexchange.com/q/33040/6986), is [impervious to cancer](https://worldbuilding.stackexchange.com/a/33131/6986). So now I will move on to the next aspect: energy production.
This creature has two types of energy pr... |
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As we all know, terrorism, by its very nature is difficult to combat.
A certain famous stage hypnotist uses the following trick when performing. He puts the whole audience in a trance at the start of the show. He hypnotises them to believe they have had a wonderful time and to tell their friends how grea... |
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I read that Venice was built on the lagoon because the population was on the run and wanted a place isolated from the Huns but gave them access to the sea. But, is this the only reason for founding a city on water? Tenochtitlan for example was on an endorheic lake and had floating gardens for some agricu... |
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I had a look at [this question](https://worldbuilding.stackexchange.com/questions/628/explaining-where-energy-comes-from-to-power-magic), and though about magic and the human body's energy output.
I remember calculating the energy require to walk up a 3.4m staircase quickly in a school physics lesson onc... |
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Currently I am working on how to explain a character that can "phase" through objects in a similar manner to Martian ManHunter. His abilities are negated by certain (rare) metals. His ability could be meta-human (like The Flash etc.), biological (ManHunter), or technology based.
What scientifically-plaus... |
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I am working on the development of a humanoid species. I figured they'd have split along the evolutionary chain around the same time as humans. They'd live in a warm climate, resulting in little hair any where, but their head, since eyebrows and lashes protect against debris and head hair protects agains... |
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No one knows for sure the composition of Greek fire, but there is almost certainty that it truly existed.
Question:
What would be the effects of earlier Greek fire during the time of the Western Roman Empire?
Could it turn the tide of w... |
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Imagine Europe around 1810. Imagine the Netherlands. Imagine that it is the colonial age. Imagine also that the colonies are mostly under open rebellion. Imagine that the region of Netherlands (imagine only) and the surrounding states already have the following technologies:
1. Telegraph (telephone proba... |
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**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/7261/edit).
Closed 9 years ago.
[Improve this question](/post... |
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I have been pondering on this for quite a while. With all the recent developments in the world, more and more people are driven from their homes and have to rely for a prolonged period of time on aid. Refugee camps have, on average, 12.000 'inhabitants'.
If someone with sufficient capital decided to buy... |
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Could it be possible that a large portion (80%+) of a gas giant has thin enough atmosphere that the ships don’t suffer from re-entry effects, but thick enough that conventional dogfighting tactics would work?
Bonus: if possible could jet engines be used in said atmosphere?
[Answer]
**No**
In order to ... |
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This is Timmy. It’s a massive planetary eating monstrosity (don’t ask about Timmy), who likes to target inhabited planets. On this occasion, Timmy has chosen to feed on earth. What would the nutritional label of Earth be for Timmy? (Assume it eats earth in one sitting. Also assume he can fully process al... |
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Imagine an alien world populated by silicon based lifeforms, the mega fauna can only be animated by exposure to adequate lights from the star or the moon. This world concept is inspired by a automatronic killer giant doll in a mega hit Korean TV series, so I design all the creatures to only become animat... |
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In this setting magpies and mammoths have been domesticated for hundreds of millennia, allowing them to become far more diligent and trainable than dogs by a wide margin.
The mammoths come in full sized and dwarf breeds, and the magpies similarly come in breeds from wild magpie up to raven sized.
Both th... |
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Rust and Cannonball are two very different worlds in most ways, with very different chemical environments and very different types of life\*--but they have one important feature in common: they have no large natural bodies of liquid on their surfaces, and native lifeforms don't require any environmental ... |
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A character of mine gains certain abilities after a creature fuses with em as he dies. However, I don’t know of any supernatural creature that would do this or something similar which might explain the phenomenon in the story. I could make one up, but having it based on something would help me make dec... |
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**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.
**Th... |
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Earth has animals that have a photoreceptor in the near UV that obviously provides them some sort of benefit. (Given how biological material often glows under UV this might be of hunting benefit.)
Earth also has animals that have infrared sensitivity, although my impression is that it isn't in the eye.
I... |
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I want a planet with roughly the same mass and volume of earth to have tides on a much larger scale than earth, enough that the coast would be extended for at least several hundred feet at low tide in many places. I don't mind if the frequency of the tides is altered along with it. It would also be very ... |
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