14 questions linked to/from Can you add a mini moon to Earth?
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### World with 3 moons [duplicate]

I'm writing a story set in a world with 3 moons and I have a couple of questions about how that would work. I understand that the tidal patterns would be significantly different than Earths and I'm ...
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### Two-moon question [duplicate]

I want two moons in my novel's new world, but hope to have minimal changes in tides, etc. Would it be possible to have a very small moon that doesn't wreak havoc on nature? Also, is it possible for ...
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### 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 ...
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### How to create an annual celestial event for a world

Yesterday while Green, Andy and I were recording new episodes for the podcast we stumbled upon a bit of a problem that we need someone with physics/astronomy knowledge to help out with. We want to ...
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### Making doomsayers right - a moon(s), planet alignment that matters

Considering our topic challenge, and the fantastic eclipse last Sunday a question came to me. Could there be a stable (relatively speaking) planetary system where a(n) eclipse/alignment would ...
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### Season cycle that would occur on a habitable planet that orbits two suns?

If there's a habitable planet that orbits two suns like the above orbital route, what would possibly occur on that planet? Would it have two yearly seasonal cycle (compare to earth)? Would it be ...
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### Are two Earth-Like planets able to be in the same system while sharing five habitable moons between them?

What I want is to know if I could have seven Earth like (What I mean by this is having an Earth-like atmosphere and climate, in this scenario size doesn't matter and nor does gravity) planets in the ...
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### Can this planetary system remain stable?

Before we begin, this system is created by aliens, and all orbits are on the same plane. These orbits are similar to earth's in shape. So, none of this has to occur naturally it just has to be stable ...
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### Is this circumbinary planet set up in a stable manner?

This is the ideal set up for my solar system: EDIT It's been pointed out that this is not a stable set up, so I want to clarify that everything in this set up can be changed at will to fit my planet. ...
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### Is this planetary system stable?

The host star has a mass of 0.90 M$_\odot$ I'll refer to this star as Helios. I'll refer to the planets as Helios One, Helios Two, etc. Helios One is 0.55 M$_{\oplus}$ and orbits at 0.75 AU. It's ...
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### Designing a binary asteroid pair

I am interested in building a little world involving a very realistic asteroid pair, orbiting each other, and would really appreciate some help with numbers and science for this. I would like two ...
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### Planet with two moons and rings? Is it possible?

So, I'm creating a jungle world that orbits a K class star (aka orange dwarf star), and is the second planet in the system. Now, I have the planet having two moons: one that is similar to our moon (...