Posts tagged atmosphere
I have a super-earth world. The surface of the world is shallower due to extra gravity, so shorter mountain ranges and less ocean depths. The world orbits a binary star system at a distance of the ...
If a planet were to have a very thin atmosphere how thick or thin would it have to be to allow there to be a daytime and a nighttime given human or near human ocular sensitivity? In other words, ...
Suppose we had an Earth-like planet based on Saturn's moon Iapetus. Iapetus has an equatorial ridge, 13 km high, which runs around it. Scaling that up to an Earth-sized planet, it would have a ridg...
My story takes place on an Earth-like, inhabited world that is far larger than Earth, has roughly 110% of Earth's gravity, and has unusually high (and generally unexplained) EM emissions permeating...
I am working on a story. i want to know if is it possible for creatures like snake, eagle, vulture to stay on an altostratus cloud without falling down. if possible the limits on how much force and...
Using Artefaxian's excellent spreadsheet I have created a basic idea for my planet, but in the 'Stability Checker' part my low gravity planet is unable to hold H2O. I am wondering if it is possibl...
For sentient avians, knowing the location and behavior of currents in the air would be vitally important. Jet streams, thermals, downdrafts, and shear layers would all be important in their daily l...
Rockets consume a lot of fuel and carry not eough payload. To reduce the fuel needed, why not send it in the mesosphere? Imagine a big balloon, capable of carrying a small rocket to the mesosphere...
35% O2 (oxygen) 61% Ar (argon) 1.07% CO2 (carbon dioxide) 0.93% As arsenic 2% Other trace elements On an exoplanet with a mass of 0.284 Earths and a surface gravity of .66 gs (6.44 m/s^2), would...
Im busy wrtiting a Space Opera and was going to utilise the "hypothesis", or whatever you call it of an ancient civ mining gold here and utilising it to disperse into its atmosphere, in turn either...
Piggybacking on this question: Could soft matter infused with nano or pico sized magnets be used to clump together so that we could create environments with it? ...So we have a planet that has low...
An abandoned outpost from a long extinct race is discovered. It can easily be repaired and would make an ideal location for a colony, however it has been breached and any usable air has been long ...
If one had three humanly habitable planets with the same gravity but different atmospheric densities due to composition, namely Earth, one with a denser atmosphere (about 1.5x as dense) one wit...
Is it possible to have an atmosphere that is essentially fog, but still be breathable by humans? I'm basically looking to have an environment where visibility is very low (for suspense reasons) ev...
How dense would an atmosphere (that's presumably non-toxic) need to be in order for a human being (without wings, artificial or otherwise) to achieve unassisted flight (without killing said person ...
If the water on earth were displaced to surround the earth in the atmosphere to create a water canopy, how thick would that canopy be? I apologize I should have been more specific in my original qu...
The second terrestrial planet orbiting the Sun is shrouded in greenhouse gases, the entire surface of Venus is always scorching hot due to the high concentration of atmospheric carbon dioxide which...
I want to have an Earth-sized planet (with similar gravity) with an extremely low-density atmosphere (comparable to Mars) at most of its surface. Complex life, including an information-age civiliza...
Assume a world with no multiverse theory, just a single unbroken timeline. If you were to go back in time to the town your parents lived in on day of your conception, the air displacement due to yo...
I'm working on a planet containing an atmosphere composed mainly of sulfur dioxide, with, notably, only trace amounts (if any) of oxygen. Is such a planet one that could realistically pop up in ou...
Is there a toxin which could plausibly exist in the atmosphere of a planet, which could make people sick but not too sick? Is it possible that plants grown in the soil from this planet might be ab...
Here is a link to the water canopy theory. My question is: how this water could end up there, high above the surface? I was thinking about two possibilities: a comet spreading ice/water as it pa...
One of the things that affects the color of the sky is the wavelengths of light that the star emits, like the image in this question. Here is the image again: If you are standing on a circumbina...
To build another world, I would want a perfected atmosphere that would sustain the air cycle and yet optimize a decreased cellular degeneration. i.e.: increase quality and length of life. Would ...
In 1815 Mount Tambora erupted throwing so much dust into the atmosphere that the year became known as "the year without a summer". *There were a few other mitigating factors but Tambora is thought ...
Can you create an atmosphere on a celestial satellite by using giant walls? Perhaps assisted with some means of technology? In a story I am creating I want to create something different from the no...
Recently, looking for information for worldbuilding purposes of my story, I found a post about how in a more oxygen rich atmosphere, the oxidation processes would take place more quickly. Subseque...
I am looking for information on how the trees and the flora would be in a world with a denser atmosphere and stronger winds. I have read that due to the greater kinetic movement of the wind, that ...
Basically: I want a highly viscous atmosphere but I want people to be able to walk around. I was thinking earth's gravity * 0.6 or similar. I was thinking that an atmosphere of Sulfur Hexafluorid...
You've got to love the rainbow, it's an awesome sight. But I don't want humans to have the pleasure of seeing the rainbow. What change to the earth, atmosphere and so on, is needed so that humans ...
Say there would be plants that release a lot of N2O (nitrous oxide or laughing gas). On Earth, N2O is a trace-gas and it is pretty stable. In our atmosphere it has a half-life of > 100 years, an...
Assuming that you had: some sort of amazing power plant on the moon that can create an unlimited amount of power a similarly amazing solar panel on earth that can receive an unlimited amount of p...
We know that Venus has a poisonous carbon dioxide and hydrochloric acid atmosphere at a temperate of over 800 °F, but what about an ice planet? Mars is mostly freezing with a trace atmosphere, we ...
I have been told that the high proportion of O2 and CH4 in my atmosphere are unsustainable unless constantly refreshed by an active process. I would like to sustain the following atmospheric compo...
I am trying to create a planet that either has no oxygen in the air, or it has very little; i.e. not enough to sustain humans without the use of a breathing apparatus. Large portions of the planet ...
My planet Mass = 0.602 MEarth Radius = 0.870 REarth Density = 5.04 g/cm3 vesc = 9.3 km/s Temperature = 272 K My atmosphere 74.84% N2 22.04% O2 1.38% CH4 1.25% Ar 0.27% H2O 0.11% CO2 Mo...
My planet Jasmi is 0.602 MEarth and, according to the wonderful u/shagomir's Planet Calculator Pro spreadsheet, I need to retain enough gas for just over 5 atm of pressure at sea level for a suitab...
I need to heat my planet and I've decided that the two most plausible and controllable ways to do so are by increasing the amount of bombardment by meteoroids from a nearby asteroid belt, and by ti...
So I would like a coloured sky in my world, but I want it to be plausible. I'm not so good at science and the like but I've been doing a lot of research. If crystal-like asteroids filled with col...
Still working on that world with with a 93% ocean covering. My star Xat is 1.71 LSol, and my planet Jasmi orbits at 2.14 AU. I've been warned that the resulting apparent brightness of about 37% Sol...
The Parachute Cities fall endlessly, ploughing their way downwards through an infinite blue sky. The Big Blue is a universe of sorts. It certainly has no bottom, but it does have a concept of "˜do...
This is a pretty simple question, but initial research only seems to provide the opposite end of the spectrum. What I'm wondering is if there are any known side effects of living in an environment ...
It's now the late 23rd century and there are now hundreds of space stations, orbiting approximately at the height of the (now deceased) ISS, give or take a few kilometers. Lately, the International...
How can I make a colonizable planet/moon that receives intense UV/x-ray radiation on parts of its surface while receiving much less on the rest of it? The most obvious way of doing this is to have...
In a Rocheworld scenario where two planets are tidally locked and share an atmosphere, but where both the planets are so small that their gravity is very little (as low as one of the dwarf planets ...
Assume an Earth-like or super-Earth terrestrial planet in a state comparable to Precambrian or Archaen Earth. The atmosphere is mainly nitrogen and carbon dioxide, perhaps some methane, but very li...
Edit: Before I give up on this I wonder how could an advanced civilization create conditions on a small planetoid (Ceres sized?) to keep an Earth level breathable atmosphere? It seems like its impo...
(See diagram) Presupposing that a Rocheworld can even exist... I imagine that sunlight would work more or less the same in the atmosphere of any part of an Earth like planet that was tidally lock...
(Please see diagrams) This is a question regarding an area of a Rocheworld scenario that I haven't found anything on. It is suggested that the OUT side of a planet that is tidally locked with an...
A good friend of mine, who's a doctor, is very well traveled, and he told me he's seen skies of different worlds take all the colors of the rainbow (and the grayscale to boot). I suspect that he mi...