Activity for System
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
How would shapeshifters be affected by their abilities? So I have a race of shapeshifters in my world, and in order to change shape or make adjustments to their body (grow wings, arms, tails etc.) They rearrange the atoms in their body, probably through magical means. Greater changes require more energy to move the atoms around, and can also be rather pa... (more) |
— | over 5 years ago |
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How long would it take people to realise some rabbits are sapient? Set in modern day, a small warren of rabbits randomly achieve sapience in an unremarkable, rural countryside. These rabbits become capable of thinking and self-reflection, as well as advanced teamworking and organisation. They could use tools, but its difficult to craft or hold anything with paws. Ot... (more) |
— | over 5 years ago |
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Let's float an island on an astrophysical jet An astrophysical jet is a stream of particles emitted by matter falling into an supermassive star/black hole, travelling at up to 80% the speed of light. A troll with a portal gun (which places portals instantly) wants to have his house floating above the ground (with his garden) just by using a sm... (more) |
— | over 5 years ago |
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Dragon shapeshifting and memory mechanism Dragons are biologically immortal creatures that have evolved the most versatile sexual reproduction in existence, they can morph through a cocoon into any other species from the animal kingdom that posses a brain in order to reproduce with other species and spread their genes globally. A dragon mor... (more) |
— | over 5 years ago |
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Rock crushing hands, how to make it possible? A species of humanoid creatures with a strange skull structure and huge horns has somehow immense strength in their hands. The rest of their body seems to be strong in proportion to their weight and height, just like normal people, but their hands are strong enough to crush rocks. Yet their hands are... (more) |
— | over 5 years ago |
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Can mountains ever transition abruptly to plains? I'm trying to write a story where the main characters discover the wreckage of a spaceship in the fields that border their town to the west. To the east, there's the end of a large mountain range. Basically, the town's built into the side of the mountain. Does a mountain range have to be preceeded b... (more) |
— | over 5 years ago |
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What is the most pratical/feasible method to replace the human digestion apparatus? Objective: Replace the human digestion apparatus (stomach, guts etc) From my basic understanding the human body needs food, because it needs ATP (energy unit, some kind of sugar(?)) or you could say high enough (but not too high) blood sugar at most points in time, correct? Assume you have sufficen... (more) |
— | over 5 years ago |
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What is the minimum size for the Sun? How small could our Sun be and still "burn" with nuclear fusion and emit the same spectrum of light and other radiation as the real Sun does? Edit: The goal is to have a small sun inside a huge vessel, such as an O'Neill cylinder. (more) |
— | over 5 years ago |
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Dimensions of an O'Neill cylinder with gravity and coriolis force like surface of Earth What would be the diameter and rotational speed of an O'Neill cylinder on the inside surface of which centrifugal and coriolis forces are equal to "gravity" and coriolis force on the surface of Earth at sea level? Notes: "Gravity on Earth" (in quotation marks) here means the sum of gravitation and... (more) |
— | over 5 years ago |
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How can spacecraft manufactured on the moon be powered? Background: The moon has been selected as the base for human space exploration. Rather than ship tonnes of material out of earth's gravity well, interplanetary spacecraft and space stations will be manufactured on the surface of the moon and launched from there. A level of industrial capacity allowi... (more) |
— | over 5 years ago |
| Question | — |
Logistics: How to move humanity onto a spaceship that is being built from planet Earth? Humanity builds a spaceship to leave Earth. For eight billion people or so, that vessel has to be gigantic. Using the metal from Earth's core for the construction and the biosphere to create a habitat, building the spaceship more or less uses up all of planet Earth. But how do you get all the people... (more) |
— | over 5 years ago |
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Make slimes great again, but how? Slimes are seen as merely base-level enemies which don't really challenge the heroic main character, the Chosen One. My question is how to make slimes incredibly powerful without using magic. They must be able to defend themselves from knights as well as easily killing most foes, even a tiger. Wh... (more) |
— | over 5 years ago |
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How would aliens test humans for empathy? 500,000 people have been kidnapped from all over the world by aliens. The aliens want to see if humans have empathy, and they can't understand our languages, as we speak they hear just random noises coming out of our mouths. Scientifically speaking what is the most effective way for aliens to meas... (more) |
— | over 5 years ago |
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Arms without wrists The human hand can be flexed at the wrist, extended and even abducted or adducted while the forearm can also be twisted in supination or pronation giving the illusion of the wrist twisting. All of these movements are necessary for all basic human functions. But what if the there was not such thing... (more) |
— | over 5 years ago |
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Giant shoulders Many fictional characters,specially in the anime art have shoulders bigger than any other upper body muscle. Normally the obliques,chest and latissimus dorsi are the biggest muscles in the upper body but in anime the shoulders are actually bigger than the head. These are the proportions I'm talkin... (more) |
— | over 5 years ago |
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Climbing up on running water I remember playing this game back in 2010-2011, and In minecraft if you found a waterfall you could actually swim it up vertically, it was difficult but possible. Does this apply to real life to, could a human being with muscles big enough actually swim up on falling water? (more) |
— | over 5 years ago |
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History without resource driven wars Usually when a population overgrows it expands in search of new land and if the fields are virgin and empty they become farmland and cities, but if the fields are already occupied and the resources are already being used, then the overgrown population usually prefers engaging war in an effort take ov... (more) |
— | over 5 years ago |
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Burning Down Chicago The year is 2100. Internet 3.0 has arrived, with an ubiquitous Internet of Things. Even your wedding band has a fingerprint scanner to make sure it doesn't get stolen. An evil AI has been developed and is determined to kill everyone; however, people are still active enough that it can't make any prep... (more) |
— | over 5 years ago |
| Question | — |
My protagonist can see UV light. What will she be able to see that others can't? So in my world interdimensional travel produces UV light. However, there are obviously other things which produce UV light/reflect it and look different. Being a non-physics person, can someone explain what looks particularly different when viewed with UV light? Some ideas I have are that the night ... (more) |
— | over 5 years ago |
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How much time would humanity have to cure complete male infertility? And what is the risk-minimizing strategy? Imagine that all men in the world became infertile right now. (This would apply also to all new born boys for as long as no cure was found.) How much time would humanity have to find a cure (or lift the curse, if the reason is magical)? Think of using already existing frozen embryos (no new ones cou... (more) |
— | over 5 years ago |
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How would I gain energy from a rotating planet? A rotating object, especially something as large as a planet or a star, has kinetic energy. However, my question is how would you go about harvesting the energy the object has from rotation to go towards other purposes such as powering several thousand space stations? I'm making a hard science fictio... (more) |
— | over 5 years ago |
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Justifying why a troll's skin would turn to stone in sunlight It's a fairly common legend that trolls turn to stone when exposed to daylight, and I was thinking about using such a creature in a story. I'm searching for a plausible way of justifying such a weakness - there's nothing similar existing in nature that I know about. For background; I'm visualising t... (more) |
— | over 5 years ago |
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Would an explosion or energy discharge permeate to other spatial dimensions? Let's assume there are more than 3 spatial dimension, for example 4 (the 4th not beeing time, but spatial) Would a common energy discharge, explosion etc. affect the 4th dimension? I am not sure if the answer would be speculation, since the 4th spatial dimension is theory right now, or is it? Ther... (more) |
— | over 5 years ago |
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How do I calculate the amount of sunlight a planet gets? I'm working on a planet and I want to know what is the maximum amount of sunlight my planet gets in lux (for Earth It's 120000 lux). My planet orbits an M4V class red dwarf that has a mass of 0.22 M☉, radius of 0.16 R☉ and a temperature of 3000 K. The planet's semi-major axis is 2.3 AU. Please... (more) |
— | over 5 years ago |
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Could a humanoid species, very similar to humans, evolve arthropod eyes? If so, how would that affect them? Specifically, arthropod eyes that are neatly in their respective sockets, much like the human eyes. Could that work? (more) |
— | almost 6 years ago |
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Kidnapping Fire-Slugs I have a slug that I need to kidnap. Not an ordinary garden slug; this slug is special. This slug's slime is violently reactive with the atmosphere on my planet, and explodes into flame on contact with the air. The slug breathes oxygen, but doesn't need very much (or else it would suffocate). It also... (more) |
— | almost 6 years ago |
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How might an economy in which multiple planets are involved function? I created the above illustration to help convey my meaning, here is what everything means so that you can read it effectively: E = Earth V = Venus M = Mars The dots in the lower left hand corner represent the asteroid belt. The small circles close to the circles with letters in them are meant t... (more) |
— | almost 6 years ago |
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What is the highest and lowest comfortable average temperature on a planet? I want to write about a planet that has a high average temperature, but low enough to be comfortable. Just because of curiosity, I would also like to know the lowest comfortable. Additional Info: Comfortable in my sense means survivable for a long period or indefinitely without much protection/in... (more) |
— | almost 6 years ago |
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Is there anyway life could survive a nuclear apocalypse realistically? The only such media I've seen is Fallout, which is obviously highly fantastical. I mean, they mutant animals and irradiated zombies running around! But realistically, is there anyway that life could survive in a highly irradiated world? Humans could possibly survive in shelters. Most surface life ... (more) |
— | almost 6 years ago |
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How to make changes to a human person's DNA actually be expressed in the individual's phenotype A flaw very often pointed out in your run of the mill genetic terror story is the instant effect of genetic changes. What would it take for a specific change in the specimen to actually appear (near) instantly? Example: I (well not really me, you know right) want to engineer a human individual t... (more) |
— | almost 6 years ago |
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Stationary trinary system I am creating a world in which a civilization has achieved advanced spaceflight and has begone colonizing other planets in their solar system that is similar to ours, but with more planets. However, the twist is that this entire civilization is like a test subject. A sort of "Truman Show meets micro ... (more) |
— | almost 6 years ago |
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Can two stars orbit each other but each have their own planets in stable orbits? I'm aware that 'tatooine' worlds don't make good habits for planets, normally. From what I've read, either a planet has to orbit one star really closely, or orbit both stars from a really long distance away. I envisioned a kind of double solar system, where there are two stars that are close enough ... (more) |
— | about 6 years ago |
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Iron-rich rogue planet that is 12x Earth's mass collides with the Sun; now what? So this planet enters our solar system from the 'south' pole at 30 kilometers per second. A bit faster than the first Interstellar asteroid ever discovered. Of course, it plunges into the Sun's photosphere at a final speed much much higher than this. Some things to consider... Will the Sun get bri... (more) |
— | about 6 years ago |
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Is there a way to counter high gravity to make it livable for humans? I was not entirely sure how to word the title question, so allow me to put my question into more detail here: Suppose there was a planet with just the right conditions to allow humans to live there (atmosphere, close by, livable temperature, etc.), and there were valuable resources giving them reaso... (more) |
— | about 6 years ago |
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How might a slow fire energy weapon reliably neutralize its target? Inspired by this question, so credit to them for the core idea. How might a slow fire energy weapon reliably neutralize its target? Here are some details about the precise design I had in mind: It does not consume a limited source of ammunition, such as a reservoir of chemicals or other similar thi... (more) |
— | about 6 years ago |
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Is there a liquid that could protect a human inside it from impact? I am trying to figure out what kind of liquid, if any, can be used to severely impede or slow human motion without killing or severely damaging their bodies (IE if after being submerged in this liquid they need to spend a long time in the hospital, or are permanently disabled in some way.) Experienci... (more) |
— | about 6 years ago |
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Is full VR immersion plausible? First, let me define what I mean by "full VR immersion". A helmet or headwear that covers or plugs into the brain, allowing them to control a virtual self or physical thing (such as a robot) as well as they would control their own body, without also moving their own body. A few pieces of media that h... (more) |
— | about 6 years ago |
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Deep Space Communication Infrastructure What kind of technology would be required for a space travelling civilization to have an effective communication system or network that is similar in speed to the telegram? How would it work? This is a world in which FTL is not possible and colonized planets are within the same solar system. Thank yo... (more) |
— | about 6 years ago |
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Underground cities in a Glacial Climate Transition? My story is based on a Glacial Climate setting or an Ice Age. However the transition is gradual and humanity was given some time to adapt. The transition began in our real-world technological equivalent of Renaissance Period around the 15th century. Going by the same timeline, the story is set in 210... (more) |
— | about 6 years ago |
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How could a country broadcast digital data through tap water (instead of radio waves)? Background: I'm toying with the idea of an alternate Earth that never developed wireless technologies. Radio transmitters, Wi-Fi, etc... were never invented, meaning that light-speed communication is practically nonexistent. One nation progressed into the modern world with an extreme grasp on chemist... (more) |
— | about 6 years ago |
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Why can an elf never become overweight? Elves and human share many similarities, from body type to the ability to perform magic. However, elves retain a slim, lean build throughout their life, and are incapable of becoming obese. The biggest they could get would be that of a swimmer's body, toned and lightly muscled. This is true regardles... (more) |
— | over 6 years ago |
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Do different angles of strike affect the destructive power of an asteroid? I'm looking into the destructive power of a 5km asteroid strike, a bit smaller than the k-Pg event. How does the angle of the strike affect the destructive capability of a land-based impact. For example, asteroid X (fixed velocity, say, 50 km/s) strikes at 90° vs. 45° vs. 1° vs. "grazing" the atm... (more) |
— | over 6 years ago |
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How can I ensure that a supercontinent has fertile ground away from coastal areas? In this world, the continents never split off from each other. They stayed connected into the one giant landmass called Pangea. Humanity developed on this supercontinent, separated by landmarks instead of oceans. Given this scenario, it is logical to assume that fertile ground would only be near th... (more) |
— | over 6 years ago |
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What would drive people to risk death in the deep? Dateline: 2067 Setting: A research base at the bottom of the Marianas Trench Depth: 10,000 meters. Mission Duration: Thirty days A research base lies at the bottom of the Marianas Trench, housing 10-12 scientists of both sexes and a cat. The mission starts well, the team have trained together fo... (more) |
— | over 6 years ago |
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Effects on Earth of Decreasing the Moon's Luminescence I'm thinking of a world where the earth's moon is densely crowded with dark materials. Solar power plants, dark buildings covered with radiation shielding, large dark open pit mines etc. Imagine that its congested enough with these things, that instead of appearing white it looks black with occasiona... (more) |
— | over 6 years ago |
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Could vegetation potentially regrow on vitrified ground? In this world, a planet with very dense vegetation (earth-tropical-forest-like) and silica containing soil was attacked by spaceships which fired very high energy laser beams across the planet's entire surface, effectively vitrifying it. this planet's outer crust was only soil not solid rock or wat... (more) |
— | over 6 years ago |
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Can a rocky planet or moon be stark white? From pictures I've seen, all rocky planets in our solar system are some shade of grey, brown, and red. Ignoring stuff like atmosphere and oceans and plant life of course. I was thinking of a world that had a stark white moon. But could such a thing exist? The only 'white' moon I know of is Triton, a... (more) |
— | over 6 years ago |
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Parallel worlds with changing gravity and magnetic fields I'm working on a story that has several worlds but I focus only two of them now. World A is our present, world B is a fantasy-ish one which is very similar to ours but evolution has been different so there are more intelligent species not just humans and some other plantation as well. Magic in some f... (more) |
— | over 6 years ago |
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How massive can a spacecraft be? Enter Iaeptus - A million man mission born on a fleet of ten thousand ship to the outer solar system. Their commander : Minevera, a brain-in-a-vat super computer. With a weight of 5 tons, a neuron density 12 times that of mortal man, and 3.4 x 10^25 synapses, it is the most powerful computational dev... (more) |
— | over 6 years ago |
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What drives would make Casual Interplanetary Travel possible? I am currently trying to make a world that has casual interplanetary commutes with near future technology (within one century); so, to find a reasonable top speed for crafts in my interplanetary world, I - found the farthest major body technically orbiting the Sun (in this case, Sedna) calculated ... (more) |
— | over 6 years ago |