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The Humern empire uses Photonic Railways to transport its unimaginably vast cargo containers from one solar system to the next. These ships can reach truly staggering velocities (>0.8c even for ...
In the world I'm building, a nuclear war and subsequent repressive chaos have led all satellites to be destroyed by the powers that be, around 10 years from now. A few years later, a small spacecra...
While I am aware that there have been a lot of posts about how shape-shifting could be possible, but I am asking if this type shape-shifting would work. Okay so fair warning, physics isn't my stro...
What would the effects be on mountains, deserts, and grasslands? I know about the effects of a planet with no tilt, but I was curious about a 10 degree tilt. I am thinking the seasons would still b...
Stable Social Structures for Species with Three sexes As a continuation of this question, I'm curious about the viability of long-term social groups with the following characteristics: There are ...
A ravine the size of the Mediterranean in area and ~15 miles (~ 24 km) deep on average opens up over the course of a few days in the Himalayas. A size comparison of the Mediterranean Sea to the U...
Context I got this man who can control millions of insects at a time to fight. He accomplishes this thanks to the microbots(smaller than bacteria) in his nervous system that react to his mind and ...
I am working on an extraterrestrial class of tetrapod-like organisms. To give them an evolutionary advantage, I am considering biological hydraulics to supplement the muscles in the hind legs. Ev...
For my a story I'm writing, I have 3 species that are from the same evolution line; Kitsune's, Tanuki's, and Bakeneko/Nekomatas. All three are familiar in the lines of shapeshifiting animals. Thei...
Life Cycle Their life cycle is complicated but in the simplest way I can put it, a Keplerian is considered a baby for the first 2 years of its life. Then it is considered a gender neutral child (I...
Here is a map I just produced of the plate tectonics of a world I'm working on. Does anyone familiar with the subject see anything wrong with it? If you can differentiate between the penciled and...
The Planet The Planet I'm speaking of has the same size as earth but is much lighter. That's because the "Upper Mantle" is about 1000 km wider and mostly consist out of organic material. Such a hu...
In my story I have paleolithic era humans who were contacted by aliens long enough ago for them to have used space travel to spread across many planets. I want them to be able to fly and somewhat m...
Here, star systems are connected with "wormholes". The wormholes facilitate travel at $250\ c$, regardless of mass. They are made using special ships. Any travel (including military vessels) not th...
The Situation A colony of 100 teleporters (between the ages of 20-40) have been hidden away living like monks for 1000's of years to prevent their detection. With the death of their old leader, a...
What feature could more feasible evolve in a humanoid race, related to humans or not, that could be mistaken at first glance and/or conflated into by word of mouth exaggerating things, wings?
Previous parts here: Creating a scientifically semi-valid super-soldier, part 1: Skeleton Creating a scientifically semi-valid super-soldier, part 2: nervous system Creating a scientifically semi-...
I've had this idea for a short novel, at the intersection of the One thousand and one nights and the Multivac (& co) short stories from Asimov. The idea is that there's some kind of super AI t...
I have a huge planet with two continents separated by a wide ocean. Inhabitants think that their continent is the whole world because the other side is too far and they never visited it. What if pe...
A caldera is usually the remnant of a volcanic eruption powerful enough to collapse the structure surrounding the magma chamber. Many of our examples, like Yellowstone, Crater Lake, Toba and even ...
I was thinking of an idea for an alien species in a hard sci-fi universe, and I wondered if a species, with the same amount of emotions as bottlenose dolphins (Except for fear), survive as a specie...
In the near future, say about 50 years, the most powerful governments are starting to compete for control of interstellar resources. The first step is to send a probe or probes to a neighbouring st...
Bonobos tend to solve disagreements through sex instead of violence, what might have caused this to evolve, or something similar to evolve in a sapient race of humanoids?
So, in my last question, I asked "How could an animal run fast using blade-like feet that sink into spongy ground?" The premise was that on my planet, forests grow not from soil but from spongy, ...
Suppose that our understanding of biology and bio electronic interface technology reaches a point that it is possible to make a spinal cord implant that: forwards spinal cord signals exactly as t...
