All Questions
5 questions
2
votes
1
answer
432
views
How could an Earthlike planet have two moons, one similar to the Earth's moon and the other primarily composed of carbon? [closed]
I am building an Earthlike planet that possesses two moons, one similar to the Earth's in terms of chemical composition and one primarily composed of carbon. How could these two moons form? Which moon ...
- 4,454
7
votes
1
answer
364
views
What would be the effects on a planet orbiting a shedding red giant?
In a sci-fi RPG I eventually intend to run for a couple of friends, I had the idea of them visiting ancient ruins on a planet orbiting a shedding red giant.
Now, ignoring the problem of intelligent ...
- 314
23
votes
13
answers
6k
views
What could cause the Earth to be so endangered that mankind needs to relocate to another system?
I am looking at realistic options that could damage the Earth so severely that it would be impossible for mankind to survive there and that would also not allow us to just colonize other planets or ...
- 331
2
votes
3
answers
345
views
If a planet receives only 7.5 hours of daylight in its 30 hours cycle, how will be the conditions on it? [closed]
If a planet receives only 7.5 hours of daylight in its 30 hours cycle, how will be the conditions on it?
The considerations are that the planet receives as much sunlight as Earth, and is in the ...
0
votes
6
answers
638
views
Venus--Is She Destined to be Hell?
Back home, Venus is a twin planet with serious issues. The average surface temperature is 900 degrees Fahrenheit, atmospheric pressure is 92 times greater than ours and carbon dioxide makes up 96% of ...
- 14.9k