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Imagine a visiting alien accidentally spilled a bucket of inverse matter (a substance I made up just now) on the planet Earth and this stuff will annihilate with ordinary matter to produce neutrino...
Would it be possible for life to develop on a planet with a highly elliptical orbit? (Similar to a comet, but possibly less extreme.) If so, what conditions would be necessary and what would the li...
If humans lived on the inside of the earth's crust, what would happen if they climbed mountains? These mountains would stretch toward the burning center of the Earth. Would gravity get stronger the...
Taking into account the some limitations of the square-cube law, biology, and aviation, I have tried to make a dragon-like creature and a hominid that participate in a symbiotic relationship. For ...
Time is not a constant, Albert Einstein proved that much. Time dilation is a difference in the elapsed time measured by two clocks, either due to them having a velocity relative to each other, or b...
Most planetary rings are rich in water in the form of ice, especially now we are running low on freshwater reserves on Earth. Imagine someone discovered a huge chunk of meteorite consisting of a wh...
my question is as follows: How cold temperatures can withstand a genetically modified person who has the opportunity for a long time (more than a day ) at low temperatures (below -30 ° Celsius ) t...
So, the X-Seed 4000 (https://en.wikipedia.org/wiki/X-Seed_4000) is a rather large lad. The tallest building ever fully realized. Let's just say that, in five decades, they decide to actually build ...
I'm considering making one "creature" that is encountered in a story a sentient star in an alternate universe. I hope to hand-wave a little of the more complicated stuff by saying "this universe's ...
I want my planet to be the last planet in a universe to host life forms. I expect a rough estimation as answer. Thanks.
I am building a city in the sky; it floats thanks to hot air balloons and hydrogen. The main issue I have is how to make it grow, as this is not some kind of giant structure to start, it is a small...
I am working on creating a species where they have hollow horns (the horns have evolved to the point of being mostly for display and minor neck protection so they do not have to be super sturdy) so...
From the superpower wiki I heard that vapor is a medium for heat exchange, but when I did some research on it I found that heat exchange might need a closed system. In a fictional world how would a...
In Deep, deep space, there exists a star system with a single planet. This planet, named Dewel, is a large, green gas giant with a mass of about twice Jupiter's. What could this planet's atmosphere...
Would it be possible to build a space elevator off Europa? (The space elevator would only be for the purpose of getting items out of Europa's gravity well relative to Jupiter. At that point, the...
So, centaurs are half-human, half-horse creatures that are usually portrayed in myth as wild, violent and animalistic. Now, I, Lucretius, found a good explanation why. The answer is in the growth ...
In my setting, there are basically no biological life forms left, as everyone has either been mind-uploaded or is an artificial intelligence. It is supposed to take place at a very distant point i...
This question is based off videos of octopi running using their tentacles curled under and their body raised from the ground. https://www.youtube.com/watch?v=23qzi88k3aM I saw this question Anato...
just looking for a quick accuracy check of my continent's biome/climate map. This continent is on a planet much like Earth and it is about the size of Eurasia. It is situated in the southern hemisp...
I have a world where prehistoric humans were kidnapped and transported to another world. This other world is Earth-like, with mammals (also transported from Earth then later diversifying into othe...
The moon is made up of a substance called warpstone. This rock is solidified Mana compressed into physical form. Pieces of the moon will sometimes fall to earth, which contain magical properties an...
My question is more science-based than hard sci-fi. Basically, I'm envisioning a scenario in which technology is advanced enough that life has spread through the solar system, and this mostly via s...
In continuation of my previous question, I'm wondering about the colour of a flat world's sky. To recap the previous question, I'm imagining a flat world with the sun fixed relatively low above th...
Okay, so, how does magic work? Magic, at the end of the day, is a swarm of tiny machines (hardly visible to the naked eye, but still within the 10-100 micrometer range) that carry out a task. Indi...
The Scarlet King is an eldritch god formed as the manifestation of the tension between the modern world and the pre-modern world and the rage it creates. Originally it existing as the concept of th...
