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As discussed here: How would a Reflecting-Oven-Jay Evolve? The Reflecting-oven-Jay This is a small African predatory bird with a perfectly smooth set of wings with an area of ~100 cm2, so ...
Imagine alien prospector wanting to build "space highway" through our solar system. There could be another route, but the one leading to our system is "the best" Such prospector also wants to use ...
For a (Super super super soft)Sci-fi RP I've been planning, I've been trying to design an alien race to act as a suitable antagonist. The basis of this antagonistic race is that they are far, far m...
A certain imaginary stellar system had once a water world. But instead of evaporating away under the stellar wind, this lucky (or unlucky?) water world (made of only water and a gaseous atmosphere)...
I hope this isn't too broad. I would like an Earth-like planet for November's NaNoWriMo that is just enormous, but plausible. Then I started to get into material composition, proximity to the sta...
Following on from my previous question about how to consolidate my fantasy setting with science that was successful (thanks everyone!), things have been progressing well in my world design; and my ...
Okay, following my previous core question, after the apocalypse, one of my sets of survivors in this setting, the Usnay, managed to live in a fleet of ships for over a thousand years. This is pro...
Is there any combination of factors that would allow the average human to walk on a cloud without the aid of magic or technology? If so, could buildings and cities be constructed on clouds in those...
I was trying to put together an idea for a Gas Giant like planet that could possibly support some kind of fairly complex life, and I hit upon a few ideas: -Located in a habitable zone roughly simi...
If a world containing various biomes (frozen tundra, plains, volcanic etc), was destroyed by an asteroid or series of natural disasters, would the huge chunks of the world be able continue supporti...
Plants in our world evolved various kinds of defenses, like poison, urticating hairs, thorns etc. What i dont see is plants that defend themselves by means of explosions. The explosion by itself ...
I've been toying with an idea for ages that I think could be pretty fun but I want to make sure it's not wildly unrealistic before going too far with it. The idea is that the Equator is fiercely h...
I am building a race of humans (or humanoid constructs) that have the ability to alter their DNA (or store a second set and use it selectively) as to gain superhuman (or meta-human) abilities. Is ...
A staple of fantasy involving time travel is the hero (or heroine) zipping off into the future and then meeting a future lover with whom they go on to have wacky time-based adventures before presum...
Edit: In the scenario that the temperature of a given area increases constantly over 30 million years (slowly enough for species to adapt) starting at 20°C and ending at 90°C, what are the possib...
Imagine a race of humanoids who only eat meat, and are unable to digest vegetables. Is it possible for these humanoid to be able too create/gather enough food(meat) to the point that job specializ...
EDIT: Question timeframe changed from early XXI to mid-XXI century. Lets say 2040 decade-ish. You are the engineer in charge for the construction of the latest 's stealth suit. It should be the...
Let's take an imaginary world where, without its inhabitants realizing it, everything is physically influenced by what people thinks, by what they believe, by how they see the world. Of course the ...
I'm working on a map of several star systems (with the stars, planets, etc. not to scale with the map), and I'd like to show that they don't all lie in the same plane. Some orbits are perpendicular...
Lets suppose that Antarctica at some point lost most of its ice (due to global warming or some other plausible reason) and now most of its bedrock surface is exposed. Compared to other continents,...
I'm coming up with a science fiction world for an assignment. Would it be possible for a planet like Earth to be eaten by a giant alien creature that moves through space at a relatively slow speed...
I have been told that if I slow down today from 24 hours to 30, I'd end up getting hotter days, colder nights and more intense weather. That's fine, except that Earth's diverse climate makes that ...
In this world I'm building, a bunch of previously inactive genes in humans have started expressing, and changed newborns' metabolic system dramatically. As a result, a portion of population cannot...
Consider a planet similar from Earth: very suitable for life, with vegetal and animal life forms thriving onside. I wonder if one of these life forms could raise as a civilization as humans did, i...
A planet with changing gravity On earth gravity stays constant (besides negligible fluctuations), but it may be possible to change that. What kind of geology, natural satellite, or other anomaly c...
