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In my particular Earth, much has remained after the human-killing virus, and nature is thriving - even taking over the cities. It's beautiful. But I have separated the healthy populace in orbit u...
I'm picturing a world with a permanent, dark, overcast sky, but I'm wondering how dark it can be before photosynthesis is no longer an option. It looks like there are a good number of plants that ...
I'm trying to figure out if a certain city, with these characteristics, is possible, geographically: Assume the city's the size of Renaissance London... With Renaissance London technology Doesn't...
Disclaimer : I'm working on the entire pseudo-science thing , so the scientific part of this whole thing isn't made up properly... Certain things have not been explained , this is to keep the post ...
Imagine a society. Every member of the society is indoctrinated in different ways by their parents, the education system, media and friends. One can think of this society as a collection of i...
Al is a rat. He is also an engineer of quite a high caliber. He has developed a suit of power armor, with a movement-assisting exoskeleton that greatly increases his strength, speed, and endurance....
I'm not sure if enough heat would be generated, but this might be a simplest way to get Mars' Magnetic field going, by crashing a large body into it (perhaps Ceres?) - and, I realize the entire ide...
Inevitably, we will be colonizing and impacting other planetary bodies, whether for establishing life or drilling/mining. Today, you can expect on Earth there will be environmental requirements fo...
Can you get modern levels of health care, with no electric technology and no steam technology? Both electricity and steam are possible. Physics is the same as real life. Like... No Cavities No ...
One of the theories behind the extinction of the dinosaurs is the eruption of one or a series of volcanoes. Supposedly the ash expelled by these eruptions blocked out the sun, killing plants and th...
In a superhero setting, a thunder clap is where someone claps with superhuman strength, causing damage such as broken windows and burst eardrums. What I want to know is, taken to the extreme of the...
I'm currently working on fantasy setting with a strong focus on sea based adventures. To try and make the setting clearly different from Earth I thought I make large landmasses virtually unheard of...
Background We all know that our species evolve during and after the last ice age, (or is it sufficient to say that they evolve at the end of ice age?). A. Initial Condition Suppose I had another...
Imagine a terrestrial planet extremely close to its star (assume it's identical to the Sun to make this simpler), maybe a bit like Kepler-78b but with an orbit of only about a week, for the purpose...
Is living on an Alderson Disk possible? An Alderson Disk is a large CD-like megastructure, with a star in the center. If the disk is thick enough, it could have its own gravity. Also, the star in t...
So, I've been considering the Norse legend of Ragnarök, I'm considering how the legend could come true in a purely scientific setting. In other words what science-based explanation would best fit ...
An aquatic creature made of a yellow goo moves through the water by moving its body like a squid. The goo can slowly dissolve small creatures and the planet's form of seaweed/kelp. It also has an a...
Let's say on an alien planet called Thindor, the surface gravity is 3.27 m/s2 (which is 1/3rd of Earth's). But the atmospheric pressure is only 50 kPa (which is 1/2 of Earth's). Assume the same 20/...
In the Carl Sagan novel Contact and the 1997 film of the book, aliens from Vega have picked up TV pictures of Hitler opening the 1936 Olympics, which is depicted as the first TV signal powerful eno...
Based on this question I asked a while ago, I would like to know how to safely introduce new heavier elements to the world by asteroids without wiping the entire life and even keeps handy quantity ...
Let's say that somehow, Earth suddenly acquired a computer with ridiculous speed. This computer can run a program described in a language of your choice, which can be described by a readme file tha...
I'm putting together a solar system for a story I'm working on, and in this solar system the most important planet is a particularly large Ice giant and its big moon nestled in the star's habitable...
The hypothetical world is for all intents and purposes earth or very close to it. So what would the effects be if the magnetic field were either stronger from the start of the planet, or if the ma...
To protect against blunt strikes, high velocity projectiles, and concussive energy weapons, what type of helmet design would best distribute force of impact and/or redirect blows away from the head?
Hawking's radiation emits particles from a black-hole. Lets play with the idea of harnessing a mini black hole in the center of a star-ship. Let alone harnessing the gravity pull to the front and ...
