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In plenty of stories you have beings who age incredibly slowly and are technically immortal. I have a handful of similar such beings who have through some means or other attained the benefits of he...
The setting would be an almost permanently snowy climate. Average temperature 10 to -5 degrees celsius, with little difference between seasons. Edit: This is a human civilization. I suppose the cl...
I'm trying to work out what the sky looks like on an Earth-like moon, in particular the length of day and apparent size of the other celestial bodies: the gas giant's size, the gas giant's other mo...
Reading through the internet and countless questions here, I learned that most Earth's flying animals have beaks because they are lightweight and function well as a substitute to hands. Now, woul...
How could you create a forest in a space city, like the Citadel of the Mass Effect game? Would this forest provide renewal of oxygen for the population? Is it "simple" to create an atmosphere and ...
EDIT: I eventually managed to find the absorption spectra of SO2 online - it absorbs in the ultraviolet range only, not in the visible light range, so the only factor affecting light transmitting t...
In the game Warframe, we have blueprints which are "consumed" during the process of making a weapon / Warframe. In some Chinese fantasy Kung Fu movies, a person caught illegally learning martial a...
Question The alien want to make some new virus (or editing the gene of existing virus) to increase human death rate, and they don't want human to know the virus has been edited. I have read some s...
The setting is Earth with the ordinary moon moving as per usual, but this planet also has a moon with stronger tidal pull that moves in an elliptical orbit and comes to its closest point to Earth e...
The year is 2267 A.D. Humanity has colonized Prima Centuari system. A federal government is established; the population is expected to grow at an exponential rate to reach 1 billion by 2300 A.D. A...
Say that America/NASA has developed a small city with around 100 or so inhabitants on the Moon. Would a cannon or slingshot or trebuchet type machine be able to launch cargo out of Earth's orbit a...
I've been working on an alien species, and I wanted it to have a blood colour other than red. I was going to go with Coboglobin until I found the sites I was looking at providing diametrically oppo...
I was doing research on the terraforming of planets with a solid iron core and no magnetic field and saw a few suggested ideas for starting a magnetic field on Mars that got me thinking. Most of w...
I need an semi-organic structure large enough to fit a dense kasbah village on top, that protrudes from a shallow sea. additional info, maybe unimportant: planet orbits a red dwarf star tidally lo...
I've been dreaming up what I would consider to be an "ideal" sentient being and there have been a variety of fantastic responses to some of my other questions that got me re-examining my design. F...
As a school project, I am designing an extraterrestrial animal, and I would like to include a multiple-hearted mammal-like organism. Is there any set of circumstances in which having 3 hearts would...
Water bears are about the most impressive organism on our planet. They can withstand extreme temperatures (both hot and cold), can survive for a time in the vacuum and cold of space, are resistant ...
I had a rough idea of a species that has a tendency to blackmail other species into feeding it. The concept was a tree-dwelling species, a larger one that has few predators among the trees to worr...
Say we have an organism with the beak of a raptor (the bird type, not the dinosaur), but instead of a full beak, it only has a mandible on the upper jaw, while the lower jaw just has a jaw bone lik...
A hypothetical species is divided into males and females that exhibit pronounced sexual dimorphism. The males are further divided into multiple morphs (e.g. α-male, β-male, γ-male, etc). This po...
I am building a nocturnal humanoid race for my science-fantasy setting. They are slight, quick, sneaky and very good at being unobtrusive. They are pretty much the goblins of my setting; though not...
I'm imagining if we can live on a very special white dwarf which has very special characteristics: It has cooled down to a very low temperature Its rotational speed on the equator can almost canc...
Context The world is made of floating islands suspended in the atmosphere. For all intents and purposes, the world doesn't have a solid surface. Due to a magical influence, islands rise from the ...
Psychometry (from Greek: ψυχή, psukhÄ“, "spirit, soul" and μÎÏ„Ïον, metron, "measure"), also known as token-object reading, or psychoscopy, is a form of extrasensory perception characteriz...
I am currently working with a landmass roughly 1,000 miles (1600 km) in length and width. Would insular dwarfism or gigantism occur in this landmass? If not what is the largest a landmass can be be...
