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I live in northeastern Nebraska, and I had seen more than enough of tornadoes in my lifetime. So in an alternate Earth, it is my hope to make some changes that would save my home from being anothe...
What would the effect on humans be of a 32 hour day rather than 24 hours? It would be a pretty much even split of 16 hour days, 16 hour nights. The people would have previously been on a spaceship ...
Can a creature evolve to reproduce by exchanging the genetic code of two individuals without having any biological sex? So anything with male, female, both or a third sex is excluded. If it i...
A hypothetical mammal has developed an unusual reproductive cycle. The females normally ovulate upon experiencing orgasm, whereas the males only display sperm production and heightened sex drive du...
Is it possible, the world being as it is for a city to be isolated completely from the world? Assume technological advancements to be the same as they are today. Would such a scenario be feasible...
You have an underwater civilisation, be they merpeople, octopus people, partially evolved humans or not. One thing that is always considered as a necessity in the development of any society is mini...
35% O2 (oxygen) 61% Ar (argon) 1.07% CO2 (carbon dioxide) 0.93% As arsenic 2% Other trace elements On an exoplanet with a mass of 0.284 Earths and a surface gravity of .66 gs (6.44 m/s^2), would...
Consider a hard-SF (slower than light) starship. Boosting it up to speed takes enormous energy. There are good reasons to want to not take all the fuel with you, but to collect energy on the run....
On an air-gapped supercomputer in my basement, there's a self-improving prediction machine "” a so called Oracle "” that knows everything that is on the Internet but cannot send any data outside. (...
My story opens with an old man who arrives at his "personal" asteroid somewhere out in space. When he arrives, everything is powered down and he has to bring systems online before he can take his s...
Assuming human-style vocal cords, what phonemes would a snouted animal be able to produce? I'm looking at developing a conlang (or several) for a setting, and it has several humanoid species with p...
I was told to ask more impractical and unrealistic questions in the world building SE community, so here's my question. Say we have a hypothetical solar system that we want to destroy by separatin...
Humanoid and Planet I understand that you might think "2 circulatory systems require more oxygen so obviously it is not useful." but I know my Kepler Bb humanoids inside and out from anatomy and p...
This question is similar to this one, which wanted to know what the world would be like 10,000 years after humans disappeared. Almost all traces of human activity would be gone from the earth - onl...
I read What would make scientists realize they were on a flat world?, and I decided to make a similar one. Scenario: While poking around in an alien ruin, scientists discover a gateway which of...
If there is a planet whose atmosphere consists of : 30% methane 70% oxygen Then, can we land on it? If yes, then how, and why would it not explode? Also, can such a planet exist for a long time?
The idea of adapting to a longer day is not new. Besides other recent questions here, I recall it in When Worlds Collide (or its sequel). As I'm rewarming half a pizza for a late meal, I wonder h...
First question of many here in my pursuit of grinding out my science fiction story. The problem at hand though involves how a multi-generational ship would survive 500 years hurtling through space,...
I am trying to make an original character who is blind and hunts with bow and arrow from a flying mount. (Obviously, no existing animal can fly while bearing the weight of a human, so let's assum...
In how smart can I make ants, an idea was suggested, to instead of making each ant individually sapient, make the 'anthill' as a whole sapient; a kind of unconventional hive mind. Just as a familia...
I know there are questions similar to this, but I'm not very scientific minded, and wanted to check with you guys how this would work exactly. I don't care what else I need to add into the equation...
Okay so we all know that one planet from the movie "Interstellar" that orbited the black hole Gargantua. How do I NOT get that? What's the minimum safe distance for a planet to be from a black hole...
What if our planet was always lit so that there would be no nighttime? Assume that the scenario is like this, where A is the planet and B and ABb are the stars. And they are all aligned so that it ...
If a spy is getting a fix on a satellite and transmitting a tightbeam transmission to it (encrypted of course), there will be signal leakage. Can the spy be detected by the good guys, by them notic...
My binary terrestrial planets are roughly the size of earth and they are tidally locked with one another. They are 12,000 miles (19,312 km) apart. That distance is based off of this article, http:/...
