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I'm writing a Colonization story, and I'm trying to determine which propulsion system would be the best option. The destination is Kapteyn b, 12.76Ly from Earth, and our 40K colonists will be in Cr...
What kind of realistic oxygen producing reaction used by life could exist in a carbon dioxide / ammonia atmosphere? There are also many volcanoes, either immersed or not, water oceans and you can e...
In "The Thousand and One Nights", the ghouls were vile tricksters and ravenous flesh eaters. They kidnapped victims and lured lustful men to their doom by taking the guise of beautiful women. Somet...
So, in this world, the future's wars are fought by drones and recruit teenagers with attitude, who control and repair drones in a temporary base near the front, and are frequently targets of surpri...
Natural gas comes can be found in the underground, but its origin are the organic rests of a long time ago. However, my gas doesn't come from dead trees or anything like that. So what's an alternat...
On planet Dalia, there exists a creature that supplies Dalians with horrific fear. The Tayan. Tayan is similar to the Earth pitcher plant, and employs similar methods to capture prey. XENOBIOLOGY...
I am aware that there are a lot of answers explaining the fundamentals of a tidally locked "Earth-like" moon around a giant gas planet. For example this one: Habitable moon of a gas giant: working ...
In Warlords, Phobos is comparable to Ellis Island for Mars with its surface being home to many decent sized colonies and space ports (making use of the close proximity of Phobos to Mars) that facil...
I want to create an earth-like planet with massive aurora, visible during the day, and from the equator. How would I go about doing this? Do I increase the strength of the planet's electromagnetic ...
One common problem with powered armors is their limited endurance. This could be remedied with electric roller skates as an efficient and faster way of locomotion, capable of maintaining its speed ...
If a subspecies of human had bones that were made of an almost unbreakable material (let's just ignore any adverse effects this might have) how much would these bones help them to survive falls? ...
I have had an idea for a possible story, where the protagonists are some kind of future, sapient hominid descendants (Not descended from humans; bonobos or gorillas or something). The main premise...
I need a way for a NASA spaceship to be able to dock with the hatch of an alien spacecraft. The alien ship is automated so there's no communication, and being alien, the hatches on both ships shoul...
In my military scifi novel the military is, obviously, very concerned with security aboard its spaceships. They don't want other people to be able to receive any information about what happens on t...
Obviously there would be a lot of small (not to mention a couple large) changes humans would need to get used to on a planet that rotates much faster than Earth. The biggest one I'm concerned about...
My islands (in the world I'm building) were formed from a volcanic hotspot. I want to build realistic islands, so I was wondering how tall volcanic islands are generally in relation to their area. ...
So I'm writing a book and need help to better explain this island that sinks, more on that in a moment as I give you the basic build of the planet... First, its a world on a very tilted angle. the...
I'm using Kapteyn-b for a story, which orbits its red dwarf star every 49 days. It's almost 5 times larger than Earth, though I've made a couple changes to the observed data to make it more plausib...
This is a fairly simple question with a likely rather complicated answer. Basically, I worldbuilding a planet that has become a complete wasteland of ash, rock and flowing rivers of magma. The civ...
To my understanding, part of the reason life is able to exist on Earth besides its ozone layer is due to its magnetic field, which protects the planet and its life against solar winds and keeps the...
I am creating a world in which a society exists that is heavily inspired that ancient Sparta, specifically with a focus on Spartiates and their military education, the agoge. A character in the sto...
I have a generic Earth like planet, same atmospheric composition, and the same oceanic composition. The crust of this planet is predominantly silicon based but plenty of iron, nickel and copper. ...
I'm thinking of an alien alien world that has a vast biosphere. Now the creatures of this planet have evolved to be hexapods though there are a few creatures that are tetrapods (only have four limb...
I've been doing a little research (including reading Howard Curtis' Orbital Mechanics for Engineering Students) because I want to build a solar system with a planet that has a true three-dimensiona...
I'm working on a planet and I want to know what is the maximum amount of sunlight my planet gets in lux (for Earth It's 120000 lux). My planet orbits an M4V class red dwarf that has a mass of 0.2...
