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I'm drawing from Norse mythology on light and dark elves to write about an alien race and planet with one humanoid 'tribe' residing on the sunlit side and the other on the dark side. I mention bloo...
By Mars sized I mean with masses between 0.10 (M⊕) and 0.25 (M⊕), the planets need to have independent orbits around the star. We can assume the habitable zone stretches from 0.70 AU, to 1.5 A...
Under what circumstances would a species develop an adaptation to employ surrogate wombs of their own species or others? The species implants its zygotes/eggs in the uterus/brood pouch of a surrog...
I want to build a big structure that will be visible from space. A object would need to be very large, maybe kilometers across, to be visible from, let's say, the ISS (which orbits at an average he...
I have a scenario where, thousands of years ago, an alien AI is imprisoned in a human body in place of a traditional AI box to limit its mental capacities (it's being punished and not expected to d...
Caloric intake varies vastly even in just the world of mammals, from the hundreds of pounds of leaves an elephant eats everyday, to the small amount a sloth eats. Obviously, caloric intake is impor...
If the range of gravity abruptly shortens from infinite to mere 10 light minutes, assume no other changes in properties and this effect occurs at no time at all. What happens beyond the Sun's gravi...
Let's say the Earth suddenly and jarringly accelerates to the point where day becomes night in a few seconds (assuming it was originally noon at the point of observation and that equal time was tak...
Planet - habitable, tidally locked planet orbitting red dwarf. Aim: a realistic answer (neither involving handwavium nor aliens that used it all) why a virgin planet that already experienced a wh...
Like, if you massively accelerated the Moon's orbit or propelled it somehow so that it moved from one side of the Earth to the other in a very short period of time, what effect would that have on t...
Earth is entering anther ice age and this time there will be no liquid water on the surface of the planet, the water cycle disappear as a result no Coriolis effect. What would the weather be like t...
The binary stars system is comprises of a red giant with 6 solar masses and a Sun-like star, the exoplanet is orbiting in the Goldilock's zone with a molten iron core which generate a magnetic fiel...
There is an intergalactic war going on in the Milky Way, to get more resources. My company have been called upon to mine nebulae. There is no nebulae in the vicinity but I have got a few high mass ...
As a high mass star which have already burnt through all of the lighter elements and is now building up iron, the fusion reaction will no longer produce sufficient energy to counter its own weight....
Newton who laid out a set of mathematical rules to predict the motion of objects from a falling apple to planets orbiting the Sun, however it was Einstein who described how two masses tend to accel...
A mutated species of hominid now grows up very quickly (perhaps 3x its normal growth rate) has a natural regeneration factor. Like an axolotl*, it can regrow complex structures that it loses, like ...
I am facing a great difficulty to come up with a working principle for a permanent force field on my spaceship which will only permits guest while simultaneously deny strangers or foe. The followin...
I'm in the middle of creating a RPG one-shot for some friends, and I'm thinking of doing an Aliens meets Space Hulk style "Big-Gribbly Aliens VS Humans" game. Is there an upper limit to the size ...
If humanity decided right now that they wanted to become a space empire and colonize the entire solar system would they be able to do it? One of the biggest problems with theoretically colonizing M...
I have just found out that the Milankovitch Cycle, a machination responsible for the creation of the Pleistocene ice ages, has its part played partly by orbit from the entire solar system. As a re...
Is there a way that, on an Earth-like planet (similar size, mass, composition, resources, moon, climate, star orbit, etc.) some natural process could create and continually renew a Kessler Syndrome...
Earth is overpopulated and needs somewhere to create a settlement. If they decided to settle on Saturn's asteroid ring and If the people who are making the settlement have the technology we current...
The world I'm currently writing is an alternative Earth with Space Age tech that advanced much faster than our Earth because of Ancestral Guidance: In the middle of every graveyard, there is a pa...
Can life exist on a asteroid? If the asteroid can sustain life, when the asteroid crashes on a planet can life survive going through a atmosphere and landing and then living on a earth-like planet ...
Let's say I have a species similar to human, as sort of New Humanity. The only thing that separates them from humanity is their subspecies: the Sublorans. They have multiple animalistic features th...
