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What is the largest planet I can get, while still remaining within Earth-like parameters? My concern is with gravity, water pressure and atmospheric pressure. Escape velocity is less of a concern. ...
I am designing a creature that is quadrupedal but can run after prey on its hind legs. What kind of hip bone would allow for the excess stress to be put on it during bipedal locomotion? The animal ...
Could a creature be made entirely, or mostly of magma or lava? Could it sustainably live in or near a volcano for an extended period of time? Rocks around the outside are optional, and encouraged. ...
I want to have a group of space colonists get stranded on a planet where the only way they can get enough nourishment is to gather or cultivate edible plants.
On another planet there is a life form that has the same level of intelligence as humans on Earth, but it has no appendage to manipulate its environment. It has similar social structures to humans...
In the year 2069AD, a spaceship is transporting hundreds of people in cryogenic sleep to a distant star. The spaceship engine is a nuclear fission reactor and its thruster is based on an ion drive ...
For context, I'm currently working on a short story series centered on a young man living in a dystopian America. This U.S. government keeps its 'undesirables' in medically-induced comas (long stor...
We've all heard the on-again, off-again theories of another massive object in the vast reaches of the outer solar system. Some potential evidence to support the possibility are its affects on small...
I am working on a world which is very dark due to an opaque gas layer in the hight atmosphere; but it is opaque mostly in the terahertz range. The creatures in this world therefore rely very little...
What sort of fireproof liquid could be used by carbon-based life without causing harm to the organism? Whether it be absorbed from exterior sources or produced in the organism's body. I say organis...
I want to start with the fact that I am by no means an astronomer, or even a hobbyist in the field. I am attempting to build a fantasy world which still reflects accepted physical laws. My problem...
I know that when some rivers (such as the Nile) flow out to sea, they break up into several smaller channels. But I was wondering about the necessary features of the land and water for it to occur.
How could trees in an environment with 23% Oxygen (The atmosphere is identical to earth in all other respects.) grow bark with Starlite-like qualities? Starlite is a material claimed to be abl...
I have seen a similar-ish question on here, but it doesn't quite match my inquiry. Suppose you have an interstellar civilization (the means of travel between stars being stable two-way wormholes o...
Assuming the power source for such acceleration places no limit on things, how quickly can a space craft be accelerated to the speed necessary to cross the distance between Jupiter and the sun in a...
In my next novel, there are three major powers in the solar system: Earth, Mars, and Saturn. Earth runs on a slightly modified Gregorian calendar, Mars goes with the good old Darian calendar, and S...
As the title says, you know stuff like minotaur, lycanth or werewolf, cat or dog folk, etc especially for the female specimens. I want to know what happen if quadrupedal mammals which usually have...
In my world, officials dealing with sensitive information have their tongues amputated. Naturally writing and a special, government-only sign-language are the main forms of communication, but crea...
Me You might call me evil but the facts are I deserve to rule all of the world, everyone & everything in it. What I already have done For years I have worked in the shadows (as much as you c...
The Coriolis effect on a ring-shaped space station gets the most attention, but disregarding that, would the rotation of the starfield be too disorienting? A 1km radius station at 1G simulated gra...
Suppose you have a regular old Stanford torus space station with a 'glass ceiling' rotating at 1.3 RPM. Put it in orbit around a star such that its axis of rotation intersects the star (in other wo...
I've just come here for some help drawing a map for this fictional planet where two roughly similar planets have been smushed into kind of pear shape like this: So this planet spins on an axis w...
I've included more background below, but the TL;DR is that you're a lone immortal who's decided to breed some species of animal to a human-level intelligence (over the course of hundreds of thousan...
As part of the story I am writing, an individual has been frozen with relatively crude cryogenic technology, then preserved as well as possible. Given the constraints of biology, what would waking ...
This one's more sociological, and it seems like a shoe-in to me, but sociology was never my strength. Given how pronounced the Coriolis effect of a smaller Von Braun wheel would be, does it seem ...
