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I'll have a limited space like $1 km^3$ that have (through handwaving) more then three dimensions. But anyone entering it would perceive it as a three dimensional space. A little bit like this vide...
Suppose a K-II civilization built a terrarium or zoo, featuring life and ecosystems from different worlds as it travelled through the universe. (By K-II I mean in terms of resources and energy bud...
Another question about my exotic matter planet. I mentioned floating landmasses via anti-gravity and exotic matter mining, but I recently read this: https://www.sciencenews.org/blog/context/fact-a...
I've got a cave civilisation who have never seen the Sun, and don't have much of a concept of time. I was inspired by a Reddit post from someone with a similar situation, and like me, the OP was wo...
Some Background Details In 1908, the Siberian region of Tunguska made headline news when an explosion knocked down 80 million trees in an area of only 770 square miles. The mystery was that there ...
So I've been thinking about colonists on a huge planet. If a jupiter-sized planet had a breathable atmosphere, we would still be unable to live on it due to excessive gravity, which would crush us...
At what levels of carbon dioxide do humans have breathing problems (e.g. hyperventilation) or adverse medical effects? And what level would people need to wear breathing apparatus to survive? This ...
In the story I'm thinking to write there's a group of 50 000 humans with superpowers. These powers cause them to have great weaknesses so they decide to hide. Which countries or regions of large ...
So I had an idea earlier today and was wondering. Most sources you consult about the supposed "vacuum metastability event" say that the bubble would begin expanding at NEARLY the speed of light, no...
I have created a map of an island and was wondering if it is possible for a forest with a similar climate to that of a jungle to have a rain cloud above it 24/7 on this island? Edit* On my island...
I hope this is the right Stack exchange for this question. I'm designing a planet as a setting for a tabletop RPG campaign, and basically I'm looking for some help to make sure my idea is at least ...
Could a creature evolve to have multiple consciousness ? Let me add more details : -They all live in the same body -They communicate with each other silently -They cycle phases of work whe...
In my made up world, I have an onyx coloured river but I am not sure if it would work. Edit* I want to have black water where the river used to be an old lava bed so the lava rock at the bottom ...
what are the rules I need to follow to name different races of a specie and different species that have one ancestor in common ? Additionally how do i know when a race becomes a species ? Is an ...
On Earth, there are only two different ways to create major volcanoes. One way is subduction. It occurs when older/heavier rock sinks beneath younger/lighter rock. As the rock descends, it lique...
Due to a thick cloud layer(at approx the same heigh as Earth's) surrounding this planet, it's plants have evolved to stay above the clouds so that they can absorb sunlight from their nearby star. I...
I have a rocky world where land-based vegetation like grass or trees are either very rare and restricted to small and rare areas or non-existent. Rather, vegetation has stayed in the oceans and dev...
If an earth-like planet was slowed down to very nearly match its orbital period, so that instead of being tidally-locked to its star, the planet effectively had an immensely long day. Akin to Mercu...
So I'm looking to make an insect-like organism for my book, and I was wondering what I need to think about to make it feasable, given these conditions: -These insectoids are approximately 2 meters...
Domestication of otherwise wild animals go way back. Cats have been our best weapons against rodents for 10,000 years. We had been breeding sheep and goats for their milk and mutton for almost as...
I am trying to find a way to justify the creation of a single celled sentient (sorry intelligent) being. It's general structure is not specifically apparent although it should have the ability to e...
The Arctic ice cap is melting away soon. Some (probably misguided) ecoactivists think it would be a good idea to safeguard certain indigenous species of the North Polar region (especially mammals) ...
One commonly cited problem with invulnerability-style immortality is that you watch the people around you wither and die while you survive. On top of that, even though you don't deteriorate, at som...
Something I was working on in the past involved a species of sentient insectoids. The idea was the two sexes usually live in two very different environments and rarely come into contact with the ot...
Well, I have been having computer problems and I decided that now is as good a time as ever to continue to waste my time developing my reptilian, honor-obsessed militaristic race of lizards for a p...
