Posts tagged gas
Hybrid dirigible airplane with an extremely large surface area on the top and bottom. Talking at least 100 km2. It would likely be several modular pieces put together, given its size. It would n...
I was thinking of writing a story and had the idea of having a society exist on the core of a gas planet. The core would be similar to earth with a breathable atmosphere similar to ours above it bu...
A Dyson sphere is a spherical megastructure built around a star with the goal of capturing all of the energy output of the encased star and making that energy available to the controllers of the me...
I've already asked a similar question but i'd like more details. This moon would be orbiting around a saturn like planet without rings. The host planet would be located in the habitable zone, allo...
There is a predator that lives in the forest. It is roughly the size of a large bear, and moves quite slowly - a person could outrun it at a light jog. Nor is it agile - although its arms and jaw...
I'm not even sure if gas comets can exist naturally -- feel free to comment on that in the answers. But assume that somehow a large block of frozen hydrogen/helium/oxygen/nitrogen is tumbling throu...
I'm currently working on a number of artificial space megastructures. Recently, I've been trying to work out a couple of things to do with alderson disks: What a person on the surface would see (...
Is there a limit (and if so, what is it) to the size (mass) of terrestrial planet that could be "captured" as a moon by a migrating gas giant? I'm writing a novel where a colony ship crashes on su...
I understand that the wind is caused by a differential in atmospheric pressure, but say that a city built in an extremely flat landscape is constantly threatened/harassed by the wind and wind-relat...
I'm looking to build a "twilight" world, where days are like twilight even when the sky is clear and nights are...very dark. Cloud cover might be able to turn day to an early night. I do envision a...
I thought of two questions regarding ringworld structures in solar systems with results I can't assume, so I will try to describe each (assume stability): If a (toroidal) ringworld were massive e...
This is the second part of a question here that I've broken up because they are two very distinct problems. Assuming a perfectly stable ringworld: Assume a more traditional flat ringworld that is ...
When I was a kid, I read an essay by Asimov describing an inside-out asteroid: (summary from Wikipedia) The Bubbleworld or Inside/Outside concept was originated by Dandridge M. Cole in 1964....
My question is as the title put it. I would like to know how large and thick of a wall we could currently construct. Given we have no limitations in money or materials. Bonus if it's actually sturd...
Would it be possible for a gas giant to have differently colored hemispheres? E.g. the northern hemisphere appearing blue when looked at, while the southern hemisphere would appear brown? (or any ...
I was wondering about a setting where a moon orbiting a gas giant can sustain human life on its surface, i.e. with nearly identical conditions compared to Earth (e.g. size, gravity, mean temperatur...
Suppose that Khufu, pharaoh of Egypt and builder of the Great Pyramid of Giza, was introduced to the idea of an amusement park. More specifically, suppose that he was visited by a time traveler a...
Thanks to the recent discovery of handwavium "¡ filaments that can in principle be extruded to any length, we will be able to build space elevators sooner than most people would expect. The inte...
Based on my recent series of questions: here and here. The giant known as Jupiter has moved to the inner Solar System and Earth and Mars have become it's moons (despite all the odds). The moon of ...
One of my more brilliant characters is taking a terraforming class and at one point, early in the story, she has to leave the action to take an exam. The question presented in that scene is listed...
In the story I'm writing, a gas dwarf (named Eden) is discovered in a triple star system. Its atmosphere is mainly oxygen and water based, and its gravity is slightly higher than Earth's. Unlike o...
What I'm doing is trying to find a way to create an atmospheric cold trap that will maintain a temperature of approximately −200 degrees Celsius (−328 Fahrenheit). According to Wikipedia In as...
Worldbuilder in dire need! I'm trying to figure out the eclipse length of a habitable Earth-like moon that is rotating around a gas giant. The story that I work on is centered on the Earth-like mo...
Jupiter is a terrible place to be, but for a number of artistic reasons, I'd like to have my story take place there and only there. "Mining", or resource extraction by any other name, is the usual ...
Okay, so my character is relatively short (5'6 feet). Her bones are hollow,but similiar to a birds-very dense to make up for strength. Her wingspan is 16 feet. I want her to stay as humanoid as pos...
I'm building a Dyson sphere - a real one, like Freeman Dyson originally proposed, made of swarms of solar collectors in independent orbits that fully surround the star, something like this: Each...
I have an idea for a scify/lost technology world, that I would like to check the plausibility of. What I want A terran world of large size. The crust of the world is thin, and hostile gas-organis...
Assuming you already had sufficient money and resources to build a tower stretching from the top of Europa's ice layer down to the bottom of the seabed, could you build it on top of one of its geys...
I have a habitable moon orbiting a gas giant, and there is another moon orbiting the planet on a closer orbit. The cultures on the near-side of the further, habitable moon use the transit of the cl...
I have a world idea (and definitely not the only one with such an idea in which the main location is a moon of a gas giant, that has life like on Earth. What are the effects of the presence of the...
Think basically a Jupiter brain (a megascale computer made from a gas giant) but with a Dyson shell surrounding it to act as a threefold nutrient/waste exchange (assuming it repairs itself and adds...
Ok, this is take two. Hopefully this is specific enough. I have a link to the original question here. And for those of you eager to see my sources for this, I'll link two videos here from the You...
I have a habitable moon orbiting a gas giant. The moon is not tidally locked with the gas giant. The orbital plane of the moon around the gas giant is the same as the orbital plane of the gas giant...
If force fields haven't been invented and ships must be able to deploy and return too fast for doors, how might a capital ship be able to protect its hangar from space debris and opposing fighters
First question What event would cause hydrogen to slowly replace oxygen in the athmosphere? it can be something natural or artifial. it doesn't have to cause too much mass extinctions. Some sa...
Assuming we had a gas giant instead of Mars in our planetary system. Everything else stays the same. Which long-term and short-term consequences for life on Earth would I have to take into account?
Another question made me remember this. Consider a sizable base (building, station) in the atmosphere of a gas giant planet. It should hold a staff of a couple hundred, with supplies and scientifi...
The gas giant has a mass of about 2.13 Jupiter masses in the habitable zone of a Sun like star 0.981 Sol masses, all the moons will need at least >0.12 percent of Earth's mass and a Mars like de...
When we talk about orbits we often imagine a ship or station orbiting a planet outside its atmosphere. Is it possible a ship could go into orbit inside its atmosphere (perhaps to hide from other c...
Imagine a SupraWorld being built around a gas giant like Jupiter. To have a 1g gravity on the surface the resulting SupraWorld would have to be less than twice the radius of the giant (my calculati...
I'm making a world where you live in the air, as the surface is not survivable (like Venus). I'm going to leave out the story of the planet, as it's not important. Anyway, could there be a planet ...
I'm trying to devise a planet where the atmosphere can sustainably combust in certain conditions. However, this planet must be able to support human life when the atmosphere is not undergoing a com...
Probably going to get lots of downvotes for that name... Anyway, assume that you have a zeppelin, made entirely out of lead. What gas would be required to hold this in the air? Would this contrapti...
I'd like to create a temple haunted by beings who are ostensibly ancestral spirits - basically, ghosts. How could ghosts be explained without an afterlife? gives me some intriguing ideas, but I'd l...
In this alternate universe, we still have the gas giants of Jupiter, Saturn, Uranus and Neptune. However, each planet has its mass increased $3.5$ times. How would this change affect the gravity o...
Ignoring how this sort of atmosphere would come about, what are some things that happen regularly on Earth that would be altered by this sort of atmosphere? Example: Would firearms still ignite nor...
We have all heard about the idea of space elevators, a cable so long that it literally reaches into outer space, to be used for launching payloads cheaply into Earth and interplanetary orbits. Howe...
Let's say that in my planetary system there is a gas giant around the size and distance from the Sun as Jupiter. I need the planet to be similar enough to earth to be able to be inhabited natural b...
Let's say that a gas giant (around the same size and distance from the sun as Jupiter) has a moon that supports life. The moon is around the size of Mercury (if this is too large please let me know...
I'm currently heavily revising a story which is largely set on a habitable but not exactly hospitable moon of a gas giant orbiting on the outer edge (or just beyond) of the habitable zone around a ...
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