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Welcome to Smooth World. Most of this planet (at least two thirds, but preferably more) has only tiny differences in elevation, 30-40cm at most. No hills, no mountains, no valleys. Even plains fou...
Given that a ship is a torus embedded in the plane of a vast solar panel arrangement in a sun facing orbit around Mercury, is there any means by which to protect the ship's systems from coronal mas...
Humans as Ambush Predators Homo sapiens and many of our ancestors practiced a form of hunting known as persistence hunting where we just walk after an animal till it keels over dead from exhaustio...
Given that the surface gravity on the Moon is a fraction of Earth and there is virtually zero atmospheric pressure but I still want to wet our beloved moon with whatever liquid that is known to sci...
Need ideas for the fox's tails. In case you're wondering, this is for a speculative evolution book I'm doing which is suppose to build a structure for...
And I'm not talking about the wimpy 32"‰MJ kind we have in the real world, I'm talking about the superweapon kind. Anyone familiar with Knights of Sidonia and their flagship's Heavy Mass Cannons wi...
Humans require a 20 degrees environment. that's 250 degrees warmer than Pluto. So, if humans lived there, their structures would melt the surface and sink. −200 cracks all common metals. most sp...
There are three different species of pine collectively called "bristlecones", all of whom can grow in weather too harsh and soil too poor for any other tree to take root. They are renowned for the...
A person is born with no senses, so he can't hear, speak or sense. The only way in which the world can communicate with him is through brain signalling. So they can send different signals to his b...
Lore: "Not much is known about the past of Unus Solum. What is known is scattered and fractured. Unus Solum was a planet that was subject to colonization efforts. The Ark ships that came were pre...
I want to have a world when humans got serious about global warming and succeeded in making Lithium Air battery work. Since the lithium air has same potential energy density as gas, and electric en...
I'm really excited that this topic actually exists here. For the past weeks I've been thinking about creating my own fantasy world - because there are not quite enough yet. My primary aim is to mak...
The story So Bob, the multi-billionaire, is a wealthy person today but in a not so far away future he will lose quite a chunk of his wealth and become just an ordinary millionaire. Future Bob is ...
Is there any practical g-limit for unmanned spacecraft, or could you theoretically push a missile to significant fractions of c in hours or minutes while pulling hundreds or thousands of Gs? I need...
I have an earth like planet where stalkers live. They are: Humanoid about same height, strength & speed as humans Three pairs of eyes placed horizontally (Near UV, Visible, Near IR) Lightspee...
I've looked around here a bit, but I haven't managed to find a post that really answers my question (though if there is one, please let me know). I'm trying to write a story where the two main cha...
I'm writing my first sci-fi novella and I'm looking for a bit of guidance from some scientifically literate people. My main premise is that an alien space ship similar to the death star enters Eart...
This, unsurprisingly, is also related to mermaids. Spearguns using rubber bands and the like are popular underwater weapons, so slingshots would be useful to mermaids. The problem is, these requir...
I am trying to fact check a consistent set of properties and applications for the titular unobtainium from the Mass Effect games in order to avoid introducing contradictions. Certain sources I rea...
I was considering the possibility mermaids might make use of sailing ships similar to the USS Monitor, but with sails and supposedly wood. Now, the mermaids wouldn't mind the ship being filled wit...
There was a good question and answer here: Does mermaid evolution come with buoyancy control? But I would like to expand the question. I got off talking with a friend, it got me thinking about mer...
Assuming one had access to all modern technology but couldn't go into space, would it be possible for the protagonist to permanently stay in sunlight? While it would be trivial near the poles durin...
Imagine a landship that can travel on a mostly frozen icy world. How big can it be while being capable of traveling and being self sustaining? It should be able to; travel great distances be s...
An interstellar civilization has superluminal travel which allows for travel between two points, effectively without traversing the space in between so they don't crash into anything between them a...
Imagine: A Kardashev Type I civilization mainly resides on a planet analogous to Earth, with one moon, analogous to Earth's moon. Eventually, the society grows so complex that machines filling spac...
