Posts tagged gas
This is a follow up question to Sky of Earth and Seas of Sky I have a medieval fantasy setting where people live in a vast expanse of giant caves contained in a sort of giant Stanford torus. This...
This was an idea for a flashback as I pick up my story around 100 trillions years from now at the point where star formation is ceasing and the red dwarf and stellar remnant era begins. Now living ...
I am writing a novel where a habitable moon orbits a purple gas giant. In looking here and elsewhere I'm finding it incredibly hard to get a sense of the elements-breakdown of elements that would b...
I'm building an earthlike world that has a moon orbiting a gas giant. Is it possible for the moon to always be between the planet and the sun? Also, is it possible for a moon to rotate around its o...
Background A McKendree cylinder is a spinning space habitat in the style of an O'Neill cylinder (below), but orders of magnitude larger. McKendree habitats are hundreds of kilometres in diameter a...
I want to build a seastead in international waters that starts small. It has to be in the Atlantic, preferably in the northern hemisphere close to either the american or european continent. Due t...
The advanced civilization in my story is trying to reach as many galaxies as possible in the next few billions years before the expansion of space has sent those galaxies permanently out of reach w...
Suppose we walled off a 1000 km square. These walls would be made of unobtanium (so they don't break), and have no cracks or holes that go all the way through. They are also around 15 kilometres hi...
Right now I'm currently trying to calculate the average surface pressure at sea level of an atmosphere, but I'm having a struggle finding the relevant formulae with which to determine this number. ...
In this universe, Earth had a couple orbital rings during the construction of the colony ships that were sent to Alpha Centauri. Humanity has achieved fusion power and efficient space flight (1g ac...
Sulfur hexafluoride is pretty awesome. It is a gas six times denser than regular air, and thus you can actually make tinfoil "boats" float on it. It also makes your voice deep when you breathe it i...
Background I am trying to find a design for a cylindrical habitat that would allow the enclosed cylinder to radiate heat out to space as does the Earth without using mirrors and windows. Problem ...
I'm working to design the atmosphere of a fictional planet inspired by Venus (let's call it Cael). Cael's atmosphere at an altitude of 50 km is essentially identical to Earth's atmosphere at sea l...
Imagine a gas giant as massive as Jupiter has a enormous planetary ring which will expand and contract throughout its orbit around a main sequence star. Then there is a moon as massive as Mars an...
Background A McKendree cylinder is a rotating cylindrical space habitat comparable to the more well known O'Neill model. It was proposed by NASA engineer Thomas McKendree in 2000 as an update of O...
There is a concern that's been brought up only recently--steel and concrete buildings are environmentally wasteful. In further clarification, they waste away too much greenhouse gases. And consid...
It appears that there are gas giants in habitable zones of stars, and likely some of them should have moons that are big enough to have an Earth-like world, so that part should be plausible enough....
If it were possible to build a giant geodesic dome tens of miles in diameter, what effect would it have on nearby weather? If built in an arid climate like the Sahara or Australia, would it be li...
This question is related to Deadly, Heavier than Air Gas, and Is a world with two different types of air possible? but has several different criteria. I've also looked at https://chemistry.stackexc...
In the story I'm writing, three humans with stone-age technology and no knowledge of space accidentally awaken thousands of cryogenically preserved humans. These humans immediately get to work on...
Things like Dyson spheres need a whole lot of raw material, which is rather difficult to come by, since the elements needed for good structural steel are scattered fairly thinly into the universe u...
Let's consider an O'Neill cylinder with a radius of 3.2km and length of 20km. In the classic O'Neill design, we have three large axis-aligned windows in the shell, alternating between purlins of ha...
Looking most specifically regarding the moons around Saturn, Jupiter, and Uranus. I've been unable to get a concrete answer on this through various sources. I've actually read several articles brie...
In my novel, the many moons of Jupiter and Saturn have been colonized, but I'm running into some logistical problems - namely, waste disposal. My first instinct was to dump it on-moon; while this ...
The Hegemony is in need of superconductors for their fleets of stratospheric craft (stratocraft for short) as well as many, many, many other applications. I recently read metallic hydrogen is a the...
"The planet moves." Inspired by this link in a comment from Gryphon here, I also see the concept in this question. We've colonized the moons of Jupiter adjusted their orbits to our satisfaction (...
Gas giants can generate heat via the Kelvin-Helmholtz mechanism. It's oft-repeated that Jupiter actually generates more heat internally via this method than it receives from the Sun. Scale this mec...
Pretty simple (in theory that is) question for one of my worlds. I heard carbon fluorides are intense greenhouse gases but otherwise harmless and didn't lead to large issues (atleast none that I co...
The illustrations of O'Neill cylinders I have come across with so far allow unrestricted view through the whole tube. Some are more playful with topography but still, there is a visible end. Are t...
For this question, I was inspired by the following image of the "Jupiter Abyss": What I want to know is, can a Jupiter-like gas giant have thousands of giant black storms, kind of like what I've...
Just assume we are long into the future, all other parameters have been met and we have the technology, will and money to terraform our moon and keep it so. Atmosphere, as commonly agreed on, would...
In my world, humans live on a moon of a gas giant that has extreme weather conditions. They also: have crystals that can store energy. possess the ability to make floating islands (on which they...
A moon-sized asteroid approaches Earth in the near future, where space tourism has become normal. The Earth has a few satellite structures above Mars conducting research, as well as successful terr...
if it takes the moon 6 months to pass through the gas giants shadow? Assume it is distant enough to not be tidally locked. The gas giant is 112.5 AU from the star. The star is 55 solar masses. ...
This is a progression from my first question, here (if this is too similar to my original question, please let me know of a better way to address this, as I am not getting the answers I need on tha...
We lived through loads of questions regarding aquatic races, so buckle up, I am going to gather some ideas around insectoids. The homeworld and race This race lives on a planet which has lower g...
I have the feeling the answer to this will come down to ''impossible'' but let's ask anyway to be sure. We know gas Giants have no solid surface and if you tried to land on one you would fall int...
Carbon monoxide (CO) is a colorless, odorless, and tasteless flammable gas that is slightly less dense than air. So begins Wikipedia's article on carbon monoxide (CO). To the best of my inte...
I've begun the laborious (but fun!) process of putting another world together. Known constraints include: Habitable, (super-)Earth-sized, tidally-locked moon to a gas giant; the giant, where vis...
Being new, this is my first question. I've read some other posts that gave me valuable insight, but I still have some questions. First, some specifics: Star: red dwarf. 80 x jupiter mass. 3 bill...
This is an edited hopefully more focused version of a question I asked a while ago. I made the mistake of asking too many questions the first time so I'll try and be a bit more focused here. I d...
In my Conworld, the inhabitants have discovered a type of star they cannot identify. I would like it to be a star made not from just hydrogen and helium, like our sun and countless others. But my q...
In this world, there is a land isolated by a lava line, and the only way to get in there, is across a bridge levitated by hot air balloons. I had the idea of making a wooden bridge being supported...
I have been trying to figure out a way of explaining how an advanced society some time in the past built an artificial planet with a black hole at its core and the effects that would have on the pe...
Assume the entirety of Earth (all the land) is covered in a city. What would the climate be like in different parts of it? I.e., what would it be like on the coast, or inland? I imagine it would b...
In a given fantasy world, I need a deadly (yet not magical) gas that will naturally pool in low depressions and valleys. The level of magic is not high, so I'd like it to be an actual chemical tha...
A spacecraft enters an unnamed system and spotted a gas giant with a pulsating planetary ring, it glows bright intermittently. What natural phenomenon could be responsible for such brilliant displa...
How do steampunk civilizations get lifting gas? Inspired by the above question I was tempted to suggest collecting the gases rising from public toilets. I know that human gaseous emissions contai...
I know of the conceptualized "Sinkers", "Floaters" and "Hunters" that Carl Sagan and Edwin Salpeter of Cornell conceived of - as possible life forms that might inhabit a gas giant. At the time they...
A common, matter-efficient science-fiction habitat is a hollow cylinder or ring in space that is spun to simulate the pull of gravity on its interior surface. These habitats have been imagined as s...
