Posts tagged atmosphere
I'm creating a world three-quarters the gravity of Earth, and the composition of the atmosphere are as followed: 74% Neon (or Argon) 18% Nitrogen 5% Oxygen 1.6% Carbon Dioxide 0.9% Water Vapor...
Could neon or argon glow naturally in any way? What would be needed in the atmosphere? P.S. Please don't change my question?
Could a planet with an atmosphere composed mostly of neon, with oxygen and carbon dioxide making most of the rest, support life as we know it (specifically on a low gravity planet)? If so, what imp...
I'm writing a story where some children (age 5 to 16) are abducted by aliens and now live on an alien planet. The atmosphere is similar enough to Earth's that the children don't need any special su...
The planet is a Super-Earth with 1.839 Earth masses and an average surface temperature of 180.7 degrees farrenheight, the atmospheric pressure is 50 times more dense than Earth's and there's large ...
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...
I have seen some questions asking whether some atmospheric compositions are survivable for humans. Most of them focus on long term survival, as in people being able to breathe indefinitely without ...
It is well known that in respiration, we produce carbon dioxide, while plants, via photosynthesis, absorb CO2. My question is, if 50% of all people die today, will the total amount of CO2 decrease ...
My idea is to have a place that is "inescapable" by any conventional propulsion system, except it has Earth-like conditions: a breathable atmosphere, 1.0g gravity, etc. What would have to be the c...
How could a planet which humans could land and survive on with no space suits or other help have a green atmosphere? The only requirement is that humans landing here would have to be able to breath...
Assume that the atmospheric concentration is still the same 78.09% nitrogen, 20.95% oxygen etc, except now just as dense as the Venusian atmosphere. Would humans be able to survive in this atmosphe...
This is an edit of a previous question. It has been edited so I can be more specific in my asking, as I'm still confused after looking at the answers to a similar question to my original. I have a...
The game Rodina features four planets, all with different colored skies. For some reason, the sun is a different color from each planet's surface (use this guide for reference). The four planets, ...
The idea I have is an Athmosphere with heavy gasses so the creatures that inhabit this planet have an easier time flying. The temperature is colder than Earth -119° as minimum , 12° average and ...
At what levels of carbon dioxide do humans have breathing problems (e.g. hyperventilation) or adverse medical effects? And what level would people need to wear breathing apparatus to survive? This ...
So, I've got a planet with this atmosphere. The composition is: 60% NO 20% NO2 10% N2O 5% N2 5% O2 traces of CO, CO2. The surface pressure is 0.7 atm, temperatures range from -30 to +30 degree...
So I am proposing a ring-world of approximately 1600 km diameter. The ring spins for earth like gravity. The ring itself would be several kilometers thick with Earth like variations in elevation ...
I am working on a book that features a form of "colonization" by destroying all life on a planet by basically doing on a large scale of what a "fuel-air-bomb" does. My question is what would be the...
I've got a planet with a very special atmosphere. The properties are as follows: Surface pressure = 0.7 atm Composition: 60% NO 20% NO2 10% N2O 5% N2 5% O2 traces of CO, CO2 My question is: ...
We all know that Titan has an atmosphere that consists mainly of N2. What I want to have is a planet with an atmosphere that consists mainly of various nitrogen oxides (NO, NO2, N2O). My question...
The setting is a moon-sized body with solid surface, thick (but mostly transparent) atmosphere and magnetosphere. But most heat from the space is supplied with relativistic charged particles impact...
How can the atmosphere rapidly change composition? Around ~2.3 Billion Years ago, the Atmosphere changed radically: Cyanobacteria started pumping out Oxygen and the atmosphere gradually became Oxy...
How dark would it be living in an impact winter? Where would an asteroid have to hit earth to cause an impact winter? gives a great breakdown of the effects of an impact winter, but I'd like to k...
For those unfamiliar, An impact winter is a hypothesized period of prolonged cold weather due to the impact of a large asteroid or comet on the Earth's surface. (Wikipedia) In my world I want...
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 ...
No, not that one. This one. I want to see the USS Enterprise fly, but I'm curious how it would be accomplished in any realistic fashion. Now, the world I'm building that needs a flying Enterpri...
What is the minimum size of a planet that could harbor human life? You get to decide what the atmosphere is, but I'm reasonably sure that O2, CO2, and H2O are necessary components of the atmosphere...
From a science-fiction development perspective I am looking for some plausible answer for the following: What conditions (the more permanent, the better) would make for a bronze sky? All the bett...
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...
So here's the premise: We have an Earth-like planet, with a civilisation at roughly the same state as ours today. Scientists have been monitoring the atmosphere for centuries, what with forecastin...
Making a world where you live in the air, as the surface is not survivable (Venus-like) but there are mountains which serve as islands. I'm gonna leave out the story of the planet as it's not impor...
So I'm trying to develop a world that's very inhospitable to my characters (humans.) And I'm looking for a some sort of fine dust that is naturally occurring but deadly if inhaled after about a day...
There an atmospheres in which I can live, like Earth's. There are atmospheres in which I can float, like if it were a really heavy gas. Is there some atmospheric composition where I could both be a...
Somewhat inspired by this question : Could a civilization as advanced as humans exist on a planet/dwarf planet like Pluto? Assume two dwarf planets in tide lock orbit around one-another. Assume ...
Following up the ideas given in this question, we introduce a new gas to the mix of air. Meta: Assume an Earth-like planet. The proposed change is a pre-development change (meaning it's there sinc...
Answer this question: "What would happen to a high-pressure creature in a low-pressure atmosphere? The hypothetical creature has evolved on a planet with an atmosphere that's much more pressuris...
The hypothetical creature has evolved on a planet with an atmosphere that's much more pressurised than that of Earth. It's humanoid in appearance, in that it has two arms and two legs as well as a ...
I have a planet that I want to have a greenish atmosphere. I've heard in a few places that chlorine gas has the potential to make the atmosphere greenish, but also to kill humans. So, the question ...
My NASA-like scientists in a system far, far away, but otherwise similar to us today, understand that their nearest sister planet, Sunev, is habitable for mankind. With one exception: it is almost...
Because Boron is directly to the left of Carbon and Nitrogen is directly to the right of Carbon on the Periodic Table Boron-Nitride has the same types of bonds and so as carbon and so in combinatio...
Over four and a half billion years ago, Theia, a rogue planet the size of Mars, slammed into the infant Earth. This impact is believed to have resulted in the birth of many things, from the moon t...
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...
Does the position of the sun in a hollow earth scenario affect the way light scattering would "color" the sky? My understanding is the reddish-orange color during sunrise/sunset is caused by the ...
Here's the setup: You have a space station orbiting Earth. On this space station is an anti-gravity device powerful enough to lift a small ship on Earth up through the atmosphere and into the space...
Science fiction often depicts humans visiting alien planets which have unbreathable atmospheres. No problem; they are shown wearing atmosphere suits including a helmet with a transparent visor/face...
For my Science-Fantasy WIP I am considering using a single artificial planet (roughly the size of a Dyson Sphere) and its moons (of which only three are large enough to exert any real influence) as...
Can a planet possess more than one ozone layer? Can multiple ozone layers cause more harm? If one ozone layer had a hole, would the other(s) act like a backup shield to harmful rays from a star? As...
Imagine that the oxygen disappears from earth's atmosphere for some 10 seconds completely. what would be the casualties it would cause, what would be the climatic changes and other changes it would...
Let us assume that we have a moon with a reasonable iron core enough that it can retain atmosphere, (as per this question), now let us further assume that the people who settle on the moon are shor...
