All Questions
11 questions
2
votes
1
answer
432
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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
4
votes
2
answers
379
views
How can I have an Earth-like moon?
My story takes place on the moon of a large gas giant planet. I have been trying to decide on a way for the moon to be as Earth-like as possible, but I have now decided to ask the community for help, ...
- 6,322
1
vote
0
answers
121
views
Number of planets in a habitable zone with large moons [closed]
I recently had an idea, and it involved moons. Excluding gas giants, roughly what percentage of planets in the habitable zones of their stars would have large moons like Earth does, as opposed to Mars ...
- 1,898
12
votes
3
answers
845
views
Horseshoe Orbits
I'm envisioning a series of moons in orbit of a super-earth (ideal) or gas giant.
If technically workable, the super-earth would have earthlike gravity, the mass and size aren't important. If it's too ...
- 1,863
3
votes
2
answers
1k
views
How many moons can form around this alternate Earth?
Say in an alternate timeline, Earth developed with more moons. Many, many many more moons. In fact, it developed with the absolute maximum amount of moons a planet of its size and mass can physically ...
- 1,118
1
vote
0
answers
342
views
How would two moons work on a planet? [duplicate]
I'm planning on making a "new world", in a new planet. This planet would have similar living conditions to the Earth, but two moons (both in the same orbit, so that both can be seen at night), but I ...
- 111
2
votes
1
answer
610
views
How could a TINY Second Moon minimally affect Earth? [duplicate]
So I found this site through this other question asking generally about what Earth would be like with two moons. However, these responses, like pretty much everything else I've been able to find ...
- 29
6
votes
1
answer
508
views
Could an impact crater make a world habitable?
For most of us, meteors are by far the ultimate planet killers. All it takes is one direct hit to suddenly wipe all life from the face of a world. But, rather than taking life away from a planet, what ...
- 1,430
14
votes
7
answers
3k
views
Moon occasionally appears much larger in the sky
Is there a way for a moon to usually appear relatively similar to our own moon, but occasionally appear much larger from the planet's surface without causing natural disasters due to extreme ...
- 5,485
4
votes
2
answers
660
views
What would be the effects of an Earth-like planet with a longer year and longer lunar orbit?
What would be the effects of an Earth-like planet with a longer year and longer lunar orbit? I have a planet with 432 days in a year and a lunar cycle of 36 days, with 12 months at 36 days each. The ...
- 758
12
votes
4
answers
2k
views
A world with a moon orbiting much closer than ours
The world I am envisioning is a rocky planet with oceans, plate tectonics, atmosphere, and several other similarities to our globe. The mass and size is roughly equal, but its moon is orbiting much ...
- 734