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There is a video from "What If" that tells about (precisely) "What if Earth was a moon of Jupiter":What if the Earth Was a Moon of Jupiter And, in a short story I am writing in an alternate realit...
When I say multicellular I mean it's made of more that one viruses. Basically it's a bunch of viruses that act like viruses but use the viruses made by infected cells to build a "multicellular" lif...
along time ago a group Australopithecus somehow manged to get washed ashore on let's say the Antarctic peninsula or at least an island near Antarctica now inhabiting mainland Antarctica and evolvin...
This question answers the issue I was wondering about of how well an exoskeleton suit could help my characters move as normal in higher and lower gravity Could a robotic exoskeleton give humans Ear...
so i want to create a monster that dwell or fly inside thunderstorm as their defense mechanism, though they do goes down to get food, i want to know what method or modifications need for creature t...
In my fictional world, the planet has some very strong winds that regularly blow across large areas of land. In this world, however, very large, tall trees grow (the reason for the size of the tree...
This is a submission for the Anatomically Correct Series Giant seahorses are often portrayed in fiction as being ridden by merfolk or other underwater people. I'm wondering if such a creature ...
I'd like to have faster-than-light travel (and communications) be an late-game option for a video game I am working on. The extent of the playable universe is approximately 4 million light years in...
The setting I've cooked up for a D&D campaign I'm running features a fair amount of buildings that have been totally abandoned by civilization for hundreds or even a thousand years. Obviously w...
Ok, assuming a planet that's tidally locked to its sun, but is otherwise roughly similar to earth in gravity and atmosphere. Classic tidally locked planet: one side is covered in ice, the other is...
If we assume a terraformed Ganymede has a global ocean roughly 800km deep, that food is bountiful, and that it has been populated by a variety of life from Earth, how large could these creatures gr...
So, as I understand it, the spacecraft would need to move in the opposite direction to the orbit. Are there any calculations I could make to attach a clicking-tock onto this? If the spacecraft were...
The boom-bust cycle answer I took for my question: Sustainability of Regular Global Wildfires due to Oxygen Rich Atmosphere pends on the atmosphere being rich in oxygen but poor in CO2. I, however,...
Let's say you have a planet about the size of Earth. It has three moons, each roughly the mass of one-third of the Earth's moon. Would this cause tides of different magnitude than those on Earth? A...
You are Alien McGee. For some reason ( don't ask why ) you need to hide an artifact in our solar system for roughly 20,000 years before coming back and taking it. Said artifact is a magical vase ...
My project concerns a world "A", that is a moon of a gas giant "Jovi", in a solar system with no other planets to speak of and a host star much like our own. "A" is Earth-sized, has no magnetic fi...
In my story, there is a planet. The planet's name is not really important for the sake of this question, so we're going to refer to it as "dead planet". Background: Dead planet is entirely hot d...
so according to this website: https://haraldas.wordpress.com/2014/10/21/dragon-fire-ever-wonder-if-its-possible/ it said that it could be possible for any animals to synthesise tert-butyllithium...
Imagine an alternate universe where FTL do happens, let's just say the inhabitants discovered a hypothetical particles that allows ordinary matter to temporarily be in superposition of any amount o...
My "magic" mirrors are purely technological and are only able to transmit light. More precisely, they can display the visible and infrared spectrums, and communicate via radio waves. They're basica...
I'm writing a sci-fi world where, if you put it in simple words, a small percentage of population can manipulate the matter. I'm not going to dive into specifics, because I'm still working on WHY a...
I am creating a fantasy world in which Earth has a second moon with an orbit between Earth and the current moon. The orbit of this new moon is faster because it's closer to earth. I'm not much co...
In the deep, outer reaches of our galaxy, there is a rogue gas giant which, due to an unfortunate event, was flung from its native orbit into interstellar space. It has a mass 12 times that of Jupi...
Basically, the title. Trying to figure out how reasonable stealth in space would function, and while I have mitigated it, I am looking for methods to improve it. But mainly, is creating a sort of h...
The planet I'm thinking of is of similar size and distance from its star relative to Earth, but it lacks oceans, instead consisting of one massive continent with a huge mountain range (reminiscent ...
