Questions tagged [habitability]
For questions asking about the conditions which are required for the development of life as we know it.
287
questions
4
votes
3
answers
193
views
Is it possible for plant life to evolve (and adapt) on a low CO2 planet?
C4 photosynthesis, which can operate in Carbon Dioxide levels as low as 10ppm
A question related to these two questions:
Habitable inner planet with large oceans, fast rotation and earth-like ...
6
votes
2
answers
316
views
Habitable inner planet with large oceans, fast rotation and earth-like atmosphere
According to several articles (such as this post), a habitable inner planet (more than 1.1x Earth’s insolation) could realistically form with liquid water (and avoid turning Venusian) through the ...
4
votes
6
answers
2k
views
Is a desert planet with a small habitable area possible?
My world takes place on a desert planet, but there is a small habitable forest with water and life. My main inspiration for this is Halem'no from star trek, but without a weather tower sustaining the ...
- 49
6
votes
4
answers
971
views
Can a star that initially started with less energy output than the sun (when it was young) evolve to be as luminous as the sun in the same time period
According to this work and worldbuilding pasta’s predictions on the water condensation inner limit for stellar habitable zones, a star like the sun cannot have a planet with liquid water on its ...
4
votes
1
answer
144
views
If ancient Venus really were once habitable, what was its atmospheric composition and average surface temperature? [closed]
Some sources claim that billions of years ago, Venus may have had much cooler temperatures, enough for liquid water on it’s surface and these clouds on the day-side of Venus would raise Venus’ albedo ...
4
votes
3
answers
134
views
How much Methane could reasonably exist on a world with 6% (60,000 ppm) Oxygen in the atmosphere?
Let’s say I have a world that has an atmosphere similar to both Titan (lots of Nitrogen and organic compounds) and Earth during the Boring Billion. Oxygen is present on this world, but only about the ...
3
votes
4
answers
176
views
Precipitation on an outer exomoon heated by tidal heating
Following this question, how would rain behave on an outer system habitable moon (>5AU from a sun-like star) heated by tidal-heating? According to this page, an outer planet or moon with low ...
3
votes
1
answer
107
views
Stability in my habitable planet orbiting a binary system (Solved)
I'm making a worldbuilding project mainly focussed arround an habitable planet that orbits a binary system and I have a question about my system.
My planetary system is an S-type (A main star in the ...
6
votes
3
answers
2k
views
Could Jupiter-like planet be able to radiate energy to sustain life on satellite?
I remember being taught about Jupiter being believed to be a failed Sun. I also am aware that Jupiter releases energy like the Sun. I am sure some of this is in relation to the sun as well. But due to ...
- 61
3
votes
2
answers
114
views
Causes of extreme seasons on an Earth-like planet such that humans need to migrate
I am thinking of an Earth-like planet that has extreme seasons (temperature) such that the humans (or other lifeforms) living there need to systematically migrate (probably twice per year) from one ...
- 131
1
vote
0
answers
38
views
What should the core mass fraction of a habitable planet that orbits very close to a dwarf star be to ensure electromagnetic protection from flares? [closed]
After reading this question, I became quite worried about my own habitable world with similar characteristics. Even worse, my star is presumably much younger -- only 8.787 Gyr (out of 50.207 Gyr). ...
- 341
6
votes
3
answers
311
views
Can a planet with rings support life?
Is it at all possible for complex life to evolve and exist on a planet with rings?
I assume the rings would have to be rock, since if the planet is to support life, it will have to be in the habitable ...
- 161
7
votes
2
answers
336
views
Could a cold-cored planet be protected by a hot-cored moon?
This is an earth-sized planet, unable to produce an adequately protective magnetic field. Could a moon with a hot, iron/nickel core produce a magnetosphere large enough to encompass the planet and ...
- 508
1
vote
1
answer
121
views
Atypical Habitable Planets - Planets Outside of Typical 'Habitable Zone' With Characteristics Still Conducive to Life
Warning: I am wordy and I overexplain things. I'm also Autistic, so I may come off as odd or unusual (and that also feeds into why I overexplain LOL). I'll do my best to be clear and concise, but you ...
- 13
2
votes
2
answers
157
views
What is the albedo of a habitable planet?
What is the albedo range for an Earth-like planet? I need to know because it's important for determining the inner and outer edges of the habitable zone. I'm thinking in terms of cloud/water-ratio (I'...
- 127