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In many forms of media, when a person is bitten by a vampire have a look of calmness and pleasure on their face. Do vampires inject some sort of venom that causes feelings of pleasure or another ex...
Consider a space opera sort of universe in which there exist communities of water-dwelling humanoids. These ocean people are derived from rootstock humans, descendants of genetically engineered hum...
I would like a world with a big LOT of subterranean space to explore, colonize, and trap ancient evil beings. Now, while the questions about food and ventilation are well adressed on Worldbuilding...
I'm looking to have a few worlds that were relatively easy to terraform as a first wave of colonies. The first colonies in this setting were meant to be on worlds that were relatively easy to terr...
I want to make a creature capable of filter O2 from normal air in order to make several things... (filter air toxins, increase partial pressure of O2, etc). Could be possible make an organic memb...
Post apocalypse. What resources will be most abundant or useful if mined from Twentieth Century landfills. Easy things like steel and aluminium are obvious, but what else is likely to be worth digg...
If a Galaxy-wide Civilization like Star Wars were to build a Jupiter brain or Matrioksha brain, would it probably cost more to build then the Death Star? In Star Wars the Darth Star was over a tri...
Let's assume we have an otherwise Earth-like planet orbiting a star just like our own. Our planet has an axial tilt of 0 degrees, meaning its axis is perpendicular to its orbital plane. Could this...
In my world ... Actually, in every hard sci-fi world with casual interplanetary travel, the G-force involved in acceleration would becomes so high that no unmodified human being could realistically...
take me out to the black, tell 'em I ain't comin' back DaaaahWhoosh - 2min ago Merfolk live in the deep, plenty deep exactly, around 800m below sea-level. At these depths we talk about litt...
Average Joe was an amateur astronomer. While he was out in the wilds one day with his telescope he was kidnapped by aliens, carried off and kept as a slave on a world somewhere in the Milky Way. Ha...
A lone mountain on a plain is powerful visual setup and one I would like to use in my world. My concern at this point is that I don't want this location to be volcanically active, now or in the pa...
I want to design a creature capable of surviving long periods without drinking water, but I am not sure how that creature could store water. These are my ideas but I am looking for something more e...
Given there is no other species that can do the job better. How much can you change a species to fulfill a specific task. The evolution of horses was pretty extreme from what I remember. Are those...
I recently came up with an interesting idea for a power: glitch power! I originally thought the idea was great until my brother brought up a valid point: what is there to glitch? Normally glitches...
In my world, all terrestrial bodies in the solar-system of over 900 km size have a significant human presence. Earth-moon Travel is as common as an interstate road trip, and Interplanetary travel i...
I am writing a sci-fi novel in which humanity has colonized a majority of the solar system, and a few minor colonies on nearby stars. Although calculating mass and gravity on individual planets and...
In science fiction secret space stations typically seem to exist inside of a nebula or an asteroid. However it occurs to me that in warfare space stations hidden in nebulae would likely be discover...
Premise The motivation as to why one would want to give a tidal locked moon a spin is out of the scope of this question. I only want to focus on the feasibility. Suffice to say there could be a fe...
A colony ship is sent to Enceladus. It has a nuclear reactor to provide power to life support, electric engines etc... Upon arrival, the colonists also need a reactor to melt holes into the ice and...
I've become interested in sci-fi / science-fantasy / weird Westerns. Building upon what I asked here I would like to be more specific and ask if there's scientifically sound ways to explain why a ...
There have been several questions about the construction, operation and destruction of a Dyson sphere. I'm interested in something a bit less exciting: how far out can you still see it from? Assum...
In my world, a scientist and engineer by the name of Guoliang Guan successfully uproots and moves a quarter of a million tons of habitat, industry, miscellaneous chemicals, storage containers, rock...
I'm new to science-fiction and I'm intrigued by the consequences of "Plan B" in the popular movie Interstellar. "Plan B" means transporting a supposedly sustainable population to a habitable planet...
I find time dilation confusing so I'm not sure if it is a relevant factor. Lets say you have a spaceship. There's no such thing as faster than light travel, but you do have inertial dampener techn...
