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In the mid-21st century, humanity has an interplanetary colony system principally spanning the Moon, Mars, and Titan (as per usual). The furthest established colony is on Proxima b. Humans have FTL...
To be clear, I'm not talking about AB, O, A, or B type blood. I'm not talking about different colored blood, either; I saw a bunch of those types of questions earlier. I'm talking about anoxygeni...
Would it be possible to recreate planet Earth and it's ecosystem on a desolate planet that has with similar basic properties? This planet has a similar temperature range to Earth, has no soil, onl...
I wonder whether it is impossible. How can I be launched into space without using a rocket? If the planet has some super volcanoes, can a volcanic eruption be used to launch a vehicle into space? H...
I was wondering, how would a civilization of humans who can see only in grayscale live their life? There is none of them that can see color. Everyone sees every thing in gray. Yet, color actually d...
I am trying to fill my world with climates as realistically as possible. In addition to climate science stuff I read on this site, I've been using these two maps of the Earth as a comparison for wh...
In the world I'm making I want to have very large creatures that will later be used in organic architecture as housing for the human equivalent in this world. In order to make this world realistic ...
What would humans look like if they lived 50-100,000 years 20,000-30,000 feet / 6 to 9 km above sea level? Or 500,000 years? Would we have bigger lungs / chests? Bigger wider noses? Thicker skin a...
Let's say I have a world that contains magical fire and ice creatures. These creatures can utilize magical beams of energy that ignite or freeze the things around them, though doing so on more than...
Imagine a space battle between two warships without inertial dampeners. Obviously the ships would be limited to perhaps 4 gravities of prolonged acceleration, and could only perform short bursts o...
I would like to have a humanoids with three pairs of eyes placed on the same horizontal plane like in Protheans not one below the other like Batarian. I was thinking of one pair being sensitive to...
This is the next piece in my question-series, you guys have been absolutely awesome in your answers to the first question: How to solve the old 'gun on a spaceship' problem? In this series, I try ...
I imagine a planet similar to ours, except for two details: The presence of everlasting clouds No yearly seasons Explanation: In this world clouds are very high and thick, so that sunlight (or...
In my 10 book series, the historical time line turns on the fact that the greatest nation in the major continent's history, disappeared overnight during a national celebration. This nation was enj...
Human have begun colonizing the solar system using the ablative laser microwave drive, our next target is Proxima Centauri and inbetween there is basically nothing except dust and occasional astero...
An alien race wants to test out its new technology that modifies the atmosphere of Earth and other terrestrial planets, they decide to center it over Central Park, NYC. One of the first things they...
I have been poking at the idea of an eventual re-emergence of the PACER concept, where energy is obtained by detonating nuclear explosions... but not exactly in the same form. After humans become s...
This question concerns this Alternative Earth. To make a certain fictional country which occupies the northern part of Russia more interesting, I want to make agriculture feasible in Siberia and t...
Suppose we scale up a human to about 10m in height and their skeletal structure have evolved to ensure they won't succumb under their own weight. Due to their unique blood circulatory system they c...
Suppose human beings have evolved markings covering the face and hairs. The cells contain a colony of bacterium capable of producing multiple arrays of visible light. Each bacteria reacts differen...
I want to have a star cluster of main-sequence stars (yellow dwarfs [like our sun], orange, and red dwarfs) that are on a distance of 1-2 light years between each other, so interstellar travel is ...
On a world I am building, I have a species of creatures that evolved from crustaceans. The problem is that while they have an exoskeleton, they also live on a world with the same gravity as Earth. ...
I'll keep it nice and simple. On a world that does not rotate is it possible to have a mountain that is high enough that when you sit at the top, you can see the divide between daylight and night t...
What adaptions would humans obtain if they lived on Mars? (eg. get taller/shorter because of gravity) In a universe where humans terraformed mars to have breathable air and house some plants, what...
Some information about their homeworld: Their homeworld, 0.34247 (M⊕) 0.54 G, 10156 km. The atmospheric pressure of their homeworld is 62% of the Earth's, and the planet has an average temper...
