Questions tagged [atmosphere]
For questions about the gases which surround a planet or some other celestial body.
879 questions
1
vote
1
answer
107
views
What would winds and storms be like in a no tilt mostly water planet
I'm making a mostly water planet with just a few islands and no axil tilt. Basically I'm wondering if my guesses are right, would my equator have lots of storms and hot rain due to the large amount of ...
5
votes
5
answers
1k
views
How could a low-gravity world keep its atmosphere?
I am currently creating an exoplanet for my hard sci-fi novel, and I have been encountering a bit of an issue.
The main pretty much non-negotiable aspects of this planet are:
It has a low gravity (0....
- 73
2
votes
2
answers
248
views
What would the average temperature for a earth like planet with only islands and no continents (water world) be? how would it affect the atmosphere
I was wondering if having a water world would make a planet more hot or cold? Also would it change the atmosphere and make that warmer or cooler?
The planet is smaller then earth (not by to much), has ...
2
votes
1
answer
153
views
Could a comet-like 'tail' of a close-orbiting Jupiter or brown dwarf 'feed' the ecosystem of a planet in the habitable zone of the system?
I am currently planning on writing a short series of mini-stories about 'extraordinary' or unusual stellar systems where life still manages to emerge. This gave me an idea for a system. I am however ...
- 221
3
votes
0
answers
99
views
How much could a star heat up a planet's mesosphere?
So, to set the stage:
I have a star 25% the luminosity of the Sun, a blue dwarf, which hosts a dwarf planet 470km across orbiting 0.06au away. Considering its distance, this planet is very hot, ...
- 81
2
votes
2
answers
1k
views
What would an atmosphere look like on a hot "steam planet"?
Specifically, I'm referring to a planet that's hot enough to be partially or completely covered in a magma ocean, but hosts an atmosphere dominated by water vapor. I'm not aware of any exact known ...
- 23
2
votes
3
answers
658
views
Would this atmospheric composition be both plausible and breathable?
I'm currently working on a spec evo project based on the planet HD 20794 d. Which I plan to make somewhere between a super-Earth and a mini-neptune. This planet would be home to oxygen breathing life ...
- 428
0
votes
0
answers
72
views
How far away does my planet have to be to retain earthlike temperatures with more methane
Recently I've decided to revamp my planet a bit. Now it has an atmospheric composition of: 25% hydrogen, 74.972% nitrogen, 0.028% methane. Without the methane the habitable zone changes to be only 10% ...
- 391
5
votes
4
answers
400
views
Could an exoplanet's atmosphere plausibly have enough heavy noble gases to cause nitrogen narcosis on lowlands?
Earth's atmosphere has approximately 1% of argon and trace quantities of neon and krypton. Having more of heavy inert gases like that would make the atmosphere more dense without making it outright ...
- 145
6
votes
2
answers
392
views
Will Earth-Mars have liquid water on its surface at all?
Related to this question: The best place on uninhabited Earth for a spaceport?
There is an alternate solar system with a copy of Earth (mass wise) in place of our system's Mars, with the same orbit. ...
- 11.3k
1
vote
0
answers
132
views
Would subtropical highs form on a discworld with a stationary local sun above its center?
Consider a megastructure consisting of a series of discs 12,600km across, which are tethered to a counterweight and rotate for centrifugal acceleration that mimics Earth gravity. At the rims of the ...
- 129
4
votes
5
answers
559
views
How could a planet with multiple atmospheres work?
Many years ago, a quantum fluctuation occurred, which created a supermassive deity three hundred million light-years in size. The force from this deity was so strong and disruptive to its surrounding ...
- 51
4
votes
2
answers
365
views
Creating realistic airborne Planktonic Photoautotrophs on an Earth-Gravity planet?
I was thinking about an earth-like setting with airborne "phytoplankton" and have been considering multiple possible modes for achieving this end. First are the main issues with airborne ...
- 79
-3
votes
1
answer
190
views
is it possible to make an atmosphere of neon and argon if the worldbuilding planet is as large as saturn?
i am facing a small problem on atmosphere. if my worldbuilding planet, Maroq, was as large as Saturn with shared ratio of minerals, elements, atmosphere, and land and water like earth, is it possible ...
- 13
10
votes
1
answer
225
views
How would the statosphere, mesosphere, and thermosphere of an Earthlike planet merge together?
Imagine an Earthlike planet orbiting a sunlike star. Now imagine a Wolf-Rayet star passing by pretty close to the sunlike star. However, WR stars emit almost all of their light in the vacuum ...
- 143