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I'm looking for biological explanations for some traits I want to give to an alien creature. Description of the Creature It looks like a five foot tall praying mantis, or perhaps a centaur. It ha...
A plethora of previous questions have queried the existence of botanic (plant) intelligence and they all have created good solutions, but their still remains a even bigger problem to even the dumbe...
Is there any hypothetical way that a crazy advanced civilization could convert matter to digital form (or energy) and back? How far away might such technology be from our current tech level, if th...
Assuming humans live in dimension 3+1; 3 spatial dimensions, length width and height, and one dimension of time, Is it possible to move matter from our dimension 3+1 to another, such as 4+1 (addin...
I'll keep this one brief. I have an alien from a planet which has extremely cold nights and extremely hot days (the day and night cycle may be short or long, I haven't decided). When the alien get...
I have planet with twice the radius of Earth, with its core being the same absolute size as Earth's in order to provide magnetosphere, and the rest of the planet made of silicates like Earth's mant...
Being inspired by the lovely concept art of Star Trek's Nibiru, I have long thought that the Nibirans would use the tiered pools for aquacultural purposes, and would like to implement tiered aquacu...
Let's say that a race of aquatic merfolk have managed to achieve sapience, they are basic hunter gatherers, living in relatively shallow waters of up to 100 meters deep. As I have begun designing t...
A large railgun mounted on the spine of a mega-scale starship (20-32km) or an antimatter-powered missile launched outside the ship? For clarification's sake, when I say "safer" I'm referring to "sa...
In my story, Earth follows an alternate history where this civilization has reached the same level of development as us, today. Assuming that this civilization can lift a second moon half the size ...
I have a native tribe in pre-Columbus America that has successfully domesticated small, omnivorous bears. They are similar in size to Sun Bears [120"“150 cm (47"“59 in) / 27"“80 kg (60"“176 lb)]. I...
Background story: Current Earth, in the close future. Astronomers have found first signs of extraterrestrial life: huge sheet-like objects (with surfaces easily as large as the surface of the Eart...
It seems like Dyson Spheres are always brought up in the context of harvesting power. However, another use for a Dyson Sphere may be to cloak your solar system/inner planets. If the star's output d...
Would it be a good idea to use a railgun to propel a person into combat in a low/zero grav environment, Ã la human cannonballs in a circus? If a person was strapped into some sort of temporary fra...
Assuming I had a magic device able to discharge its stored energy in a directional force, and absorb the energy from the resulting return force (for every action, there is an equal and opposite rea...
Suppose there was a world on which evolution and natural selection took an odd turn and never produced an organism that could be considered a plant by our modern definition, but which still produce...
Lets say that somehow a cube world came into being, on an axial tilt around its sun, four of the sides are in-habituated by intelligent life, one of these sides (relatively) quickly realized that t...
Lichen are a symbiotic organism that involves algae or cyanobacteria living inside a fungus. The algae produce energy through photosynthesis, while the fungus protect the algae from the environment...
I need a planet that is a combination of chlorine world and vitriolic world. The planet is extremely hot and under high pressure, covered in oceans of pure sulfuric acid and a chlorine/fluorine atm...
For my science fiction universe, I need to mine a lot of deuterium and helium-3. I have 10,000 intake fans each capable of 3,000 gigaliters an hour pushing atmosphere through 5 billion diffusers. ...
I have a world idea (and definitely not the only one with such an idea in which the main location is a moon of a gas giant, that has life like on Earth. What are the effects of the presence of the...
I've created a new question and worded differently to help me get the answer I want. Click here to view A planet is in orbit around a larger planet, and I want to push it out of orbit. The plane...
I'm not even sure if gas comets can exist naturally -- feel free to comment on that in the answers. But assume that somehow a large block of frozen hydrogen/helium/oxygen/nitrogen is tumbling throu...
I'm creating a world opposite of Les Visiteurs, where modern age structural engineer accidentally time travels to 13th century. When guards of the local lord arrest him on suspicion of being a spy,...
I'm designing a city built to take advantage of valuable mineral deposits in a large polar desert. The city is built around a Yellowstone-esque region of hot springs and geysers, where underground ...
