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I was thinking in a character who has a...kind of Steam powered Chainsaw, and a sword, what make them special is because the blades of the chainsaw are one-dimensional, same with the sword, they ar...
What would humans look like if they were genetically suited for life under a giant orange star like Iota Draconis ? These would be people who were genetically indistinguishable from humans from ear...
Is there a way to make retractable tusks anatomically plausible in a creature design without relying on an articulated bone structure? Basically, relying fully on musculature instead of articulatio...
Premise The goal is to implement a bronze age version of blockchain in ancient Egypt to introduce a layer of security for the royal tombs. Tomb raiding was rampant, and at times even the legitim...
I'm working on a fusion rocket concept for a hard science fiction setting. I'm envisioning laser catalyzed Proton-Boron reactors (low waste heat, aneutronic, 100% of their output being He4 Alpha pa...
What light spectrum would hit the surface of a planet orbiting a red dwarf star? The planet is a humid greenhouse with a cloudy atmosphere and a strong ozone layer. Over 80% of the surface is wate...
I have an idea for an extremely crackpot engine design for a future society I may incorporate into my story. What would happen is individual antihydrogen molecules injected into the center of car...
This is my first question on this site, which I recently found and can't get enough of. In many time travel scenarios, the machine is static in space. My question is how to explain this. For exa...
So, Anon has had enough of the DM abusing his poor creations (the chromatic dragons). Wanting a better fate for them, he wraps the DM in unbreakable chains, forged in the heart of a neutron star, a...
Suppose, that in a particular area of the ocean on an earth-like planet, all water molecules are transmuted into an exotic variety of $H_2O$ that is identical to normal water in every way except wi...
I have a moon covered in liquid water that orbits a super-Earth very closely. As you might imagine, the tides are incredibly strong on this moon. However, it is tidally locked and so does not exper...
Background I have a spacecraft traveling from one planet to another, say from Earth to Venus. The journey will take at the least several weeks. During this time, the sun will emit a number of sola...
In my galaxy, I need a planet that is far enough away from its star to be relatively cold compared to Earth, but not so cold that liquid water cold not exist. The planet has 2 continents, 1 northe...
My alien race is supposed to have the ability to communicate a lot of information extremely fast, more akin to uploading something to your partner's mind than telling him. This should happen via si...
What other kind of mouthparts might an alien (intelligent or non-intelligent) have besides the typical jaw with teeth or mandibles? To avoid being too broad a subject, let's assume the aliens need...
Cats in New York City are an invasive species that are a plague to the animal kingdom. It is well documented that these bloodthirsty psychopaths are responsible for the murder of billions of innoce...
The Hegemony wishes to organise not only terrestrial games within the inner colonies, but has also wished to establish major sporting events for the other colonies in low gravity environments on to...
Premise: Neurologists found that GHz wireless RF had modest but quite negative effects on people's brains. Subtle collective effects in neuronal firing patterns across the brain due to interactions...
A while back, I asked this question about the plausibility of giant floating whales and received an excellent and high-scoring answer from Dubukay demonstrating that, given the assumptions that Dub...
On Blue Planet 2: The Deep (at least, that is the title in the US version), there is discussion of crabs that grow bacteria on themselves as a food source. In the show, they kind of looked like the...
I want to describe a world where one doesn't know how long the day will be. It can be anywhere between 18 and 30 Earth-hours. Would such days be possible in our reality?
In my world, I have relatively robust humanoids as the focal human sub-species, and a number of other human subspecies that are more gracile in build. I wanted to work out roughly how much they wou...
On a habitable world completely covered in water, with no land above sea-level, there would presumably be storms of biblical proportions. Suppose this world has oceans so deep that the deeper layer...
Good rulers support invention of useful things. But this question has two sides. Support of invention Prevention of fake inventing Basis: Many inventions arise as side-effects of searching for...
I envisioned a world where people are not bounded by marriage and females are free to choose those who they deem "accomplished" and have offspring with him. The males "occasionally" interact with ...
