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I've been mulling over an idea for my preferred RPG setting, and I wanted to check if anyone knows the following: Is it possible for a river to flow underground for miles, and then suddenly be put...
Meaning, cause a seemingly normal winter to suddenly take a turn within hours or a day/two into a completely frozen territory? From what I've read, abrupt climate change happens from ocean currents...
No, not that one. This one. I want to see the USS Enterprise fly, but I'm curious how it would be accomplished in any realistic fashion. Now, the world I'm building that needs a flying Enterpri...
I was thinking about a different possibilities for habitable planets. And I was wondering what actually causes a planet to be tidally locked? I am assuming it more than chance that the bodies rot...
I am a survivor of the United Nations Space Corp's 2nd Exploration Fleet. On our travel to the distant Epsilon Canares system, our scouts encountered a strange lifeform. We call them 'shapeshifter...
If you want to have a smaller star but you also want to keep your planet in the habitable zone, you need to put the planet closer to the star. This means shorter years. It is also possible to have ...
For a long, long, long time I have had a concept of a world that exists on the inside of a hallowed-out sphere. The basic construction of the world is like this: It is a large world, at the cent...
There is this setup that I've seen a few times of a ring-shaped world where people live on the inner side. My question is: what is the minimum advancement of technology for such a thing to happen? ...
or, Anatomically Correct Weebles A group of behaviorally modern humans was cut off from the rest of the earth-like planet millennia ago. (Myths hold that the separation occurred four to five ka BP...
I am doing some work within the setting of the Exalted tabletop role-playing game. In broad brush strokes, the defining feature of the world is the five elemental poles: Water (west), Wood (east), ...
The question is rather simple, the answer is more complex. It is to answer why some places are colder than others. Example: North America is colder than Europe at the same latitude.
Would it be possible for the atmosphere of a planet to reach beyond its planetary ring so that earth-like biology could develop on some of the asteroids there? This question is mainly about whethe...
I'm looking for a rock from which my island is constructed. It needs to be: Either created from the sea or via intense pressure/heat Capable of trapping layers of gas beneath it White(ish) I wa...
I want to create a world set on our Earth but with humans shrunk down as much as possible to allow a huge population. As the population increases they genetically modify their bodies to be as smal...
I want to create a world set on our Earth but with humans converted entirely to machines, so the population can be larger than would be possible with biological humans. In contrast to biologically...
Let's say I have a binary star system. The planet is orbiting the smallest star similar to the Sun at 1 AU, the same Earth-Sun distance. The other star is located at around 50-100 AU from the Sun...
In the case of a world-wide plague epidemic that'll trigger the near extinction of humanity, is it possible that a virus/disease has inconsistent symptoms so that people aren't aware that it's real...
In my future setting on Earth (or an Earth-like planet; haven't decided), the fields of robotics and AI have taken off and we have intelligent, ambulatory robots. (They were initially thought of a...
There is this idea that we find in a few books, mainly The Swarm by Frank Schätzing and in the Ender Saga by Orson Scott Card, that some species could communicate via DNA exchange. Technically, y...
Terraforming is the process of transforming a celestial body to become habitable by Earth-like life. Even when I try to imagine an advanced civilization, the cost, time and complexity to terrafor...
Assuming a civilization has the technology and capability to build a worldship, a planet that doubles as a spacecraft, installs an FTL drive on it and has the energy to power it, what would the eff...
Another mermaid questions I'm afraid! Fish have tail fins which are vertical, whales have fins which are horizontal. My race of merfolk are: Very active (more likely to be warm blooded) Have gil...
I am looking for a tool that can be used to create worlds with a realistic (= physically plausible) climate and surface given general terrain shape, or can at least assist in such a task. My ideal...
Suppose one constructed a Bernal sphere, similar in design to that described in this article and this article at the National Space Society. If the sphere was simply rotated on a single axis, wou...
Is there any software tool for quickly prototyping a planetary system? Ideally this should: Allow for placement of planets of different sizes and masses around a star. Allow for examination of th...
