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I'm imagining a super-powerful spacefaring race which has the capability to build or modify a star system or even galaxy by moving stars around, but I wonder if it's really feasible. Is it theoret...
Mounts are one of the coolest things about fantasy in my opinion. Riding around on raptors, dragons, elephants and even weirder things is one of the main draws to a lot of fantasy things. However,...
Centaurs. Half human, half equine. The idea's been bouncing around in my head for the past hour, so I'm going to ask it here: Would a centaur structurally make more sense if the torso was at the ...
There are a number of humanoid creatures in fantasy that we more or less take for granted. Humans are almost a necessity for us to be able to relate to the story and they interact with dwarves, elv...
Is it possible to have a planet where the atmosphere is mostly water vapor instead of mostly N + O2 with solid ground, so not a gas giant? In the sense - how close to the center star(s) should it ...
For the purposes of this question, lets assume that we are in Edwin Abbott Abbott's Flatland, but the world is a disk, with living shapes Above, and 'dead' shapes Below (the underside of the disk)...
I've been told that if I raise the axial tilt from 23.5 degrees to 25, I'd end up getting hotter summers and colder winters. That's great, except that Earth's diverse climate makes that statement ...
For sentient avians, knowing the location and behavior of currents in the air would be vitally important. Jet streams, thermals, downdrafts, and shear layers would all be important in their daily l...
Those familiar with the Harry Potter series may be familiar with the Marauder's Map, a map that allows the holder to see where people are at any given time. It displays a person as a set of footpri...
Imagine a human colony with the concept of an Earth day being transported somehow into the deep, deep space between galaxies. As we know, gravity wells affect the relative passage of time. So, in...
At 29,029 feet above sea level, Mount Everest has been credited as the tallest mountain on Earth. The only problem is that Mauna Kea, Hawaii's highest point, is 33,500 feet tall from its peak at 4...
More often we have heard countless of familiar sci-fi scenario whereby the inhabitants of a dying planet faces world ending catastrophe most notable the superman origin. My question is can a planet...
Today's Mediterranean Sea is just a shadow of its former self, the Tethys. In an alternate scenario, I have rearranged the African mainland to an angle that turns Gibraltar from a strait into an i...
Following the answer from this link and assuming this is the best choice from the lot, if we had leave Earth right now and inhabit another world in a different planetary system, how would we humans...
I make no assumptions to the nature of this planet. There are high chances it does not have an atmosphere or a lithosphere. But in a planet that shows a high level of radioactive activity, would it...
During the Permian and Triassic periods, all the continents had joined together to become the supercontinent Pangaea. Its size means that the majority of terrestrial life might have been confined ...
It is said that the Moon plays a significant role on stabilizing the obliquity of Earth (or call it the axial tilt). Without it, the tilt of the planet is subject to great variations causing unpred...
A civilization uses the sci-fi staple of space gates to get around between systems. These gates, for our purposes, are big, round and very much not transparent; think the star gates but huge or the...
Imagine a person who has 'passive' precognitive abilities. During sleep, they dream of random future events-these can range from events that will happen in a few hours to events that will happen in...
As far as I understand, when you fuse deuterium (H-2) and tritium (h-3), you get a helium atom and a spare neutron. Basically alpha-rays? Now alpha rays are easily blocked by matter. You can block ...
70,000 years ago, Homo sapiens sapiens suffered a genetic bottleneck that reduced the population of likely 100,000 to 3,000. Over seven billion people of several distinctive races are descended fr...
Currently, the distance between Australia and Antarctica is a rough estimate of 4500 miles. But if that number were cut by half, what would Australia's climate and ecology be?
In one of my Alternate Earths, I have made the following changes to Africa: 1) Re-angle the mainland (meaning Madagascar stays right where it is) to the point that the Mediterranean is connected ...
The world I am envisioning is a rocky planet with oceans, plate tectonics, atmosphere, and several other similarities to our globe. The mass and size is roughly equal, but its moon is orbiting much...
In a story I mentioned that an AI overlord in 2036 has one of "her" bases in Ethiopia, and now I want to develop that offhand idea into its own story. My AI is equivalent to a very smart human with...
