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In my fantasy world, there are several species - both sapient and non-sapient. They all originally evolved from a group of insects that, after millions of years of isolation and no competition, hav...
I recently heard that before anyone had begun to build practical aircraft of any kind, it was thought by some that once flight was achieved you would be able to simply fly to another planet. The d...
I was wondering if there is a way to have a person with added organs and systems to be able to shoot jets of compressed air out of their body without them needing a giant gas bag or massive lungs? ...
This pure-blood vampiric race is not immortal, but their lifespans are about five times that of mortals. This race has lived in a vast city beneath a small mountain range for thousands of years (th...
I know we generally operate - or religiously operate - on the principle that fundamental things don't change over time. It's the bedrock of geology - Uniformitarianism. I also believe it is unprova...
To Whom It May Concern; I'm going to be blunt: I'm terrible at formal letters. I've just recently arrived at our new home. I find it amazing! The city design leaves something to be desired, but I ...
This is based on: Black Hole as a Storage Device What goes into a black hole doesn't come out (except as random electrons or positrons). However, is it possible to store something within the eve...
Let's consider an O'Neill cylinder with a radius of 3.2km and length of 20km. In the classic O'Neill design, we have three large axis-aligned windows in the shell, alternating between purlins of ha...
In my world, alien 'reactors' are discovered that are very efficient at creating power (around 1000x better than fission), as well as requiring little fuel, making them the perfect power source. H...
I want to create a Mad-Max-esque post apocalyptic setting. Unfortunately after a bit of looking into this, there is one massive issue with the idea of lots of maniacs tearing across the barren lan...
My setting has a lush rainforest planet, which houses some of the most feared animals in the galaxy. The abundance of food would make competition tougher and tougher over millions of years of adapt...
In my last question about methods of deflecting a rogue planet, there was a fascinating answer from Willk. Willk basically suggested that if you knew the location, mass and velocity of objects in ...
What materials and what shapes should be used for struts inside a vacuum airship's envelope? The vacuum airship is a theoretical dirigible design were you replace the hydrogen/ other lifting gas w...
Could humanity move a planet such as Jupiter by forcing it to vent its gas? Assuming we have the technology to do huge mining operations and use these to make some of Jupiter's moons into a huge t...
In the grim darkness of the 22,d century, there is only war. humanity has waged war on itself for decades, turning many areas of the planet into wastelands. With every decade that passes, new weapo...
Due to the world being based more on magic than actual science, I have a "planet" with changing season everywhere. A "sun" orbits it roughly near the equator, but it only gives light, it doesn't ch...
Hello I imagine this is a pretty straightforward question, perhaps already covered in another post, but I wanted to get extra perspectives and options for achieving this type of planet or moon. So ...
The Ressurectinator is a handy machine than can bring back people from death. Unlike the virgin Lord of Light, the chad Ressurectinator does that without human sacrifice and/or permanent scars. Yo...
I'm interested in coming up with a plausible agent of destruction, virus or fungus or engineered weapon or what have you, that could conceivably wipe out a majority of the human race. What physical...
I want to have a two-world binary planet system where both have intelligent life, orbiting a single star. The two planets are assumed to be tidally locked to each other and orbit each other every 3...
I have been playing with the ideas of electricity generating/attacks for my characters using either electric organs similar to electric eels or some sort of bio battery using bacteria that produce ...
With the potential for an impact event to trigger volcanic activity on the opposite side of the planet, what is the largest plateau of flood basalt physically capable of forming on Earth, post-impa...
I'm working on a version of wormhole-based FTL travel, and one of the side effects of passing through the wormhole is going to be instantaneous heating of every molecule of the thing passing throug...
Working on a story right now where parasite-controlled humans essentially become the apex predators in the world, and harvest uninfected humans to further spread the organism. These kinds of mind-...
NOTE: I previously asked the same question regarding wheels, because I thought that the answers would still help me and that wheels were more applicable to a wider audience than propellers. However...
