system
Given the following post, respond as if you're commenting on Reddit:
human
For planets with dozens of moons, do moons ever collide? And if so, what impact would that have on the planet?

In case of collision, do both moons cease to exist? Do their remains rain down on the planet like a meteroids, or are they pushed into outer space?

Losing our only moon would be catastrophic for life as we know it. But would it affect life on a planet when their moon counter drops from like 50 to 48?
gpt
You're thinking from the wrong direction. You're pretending the moons just suddenly appeared and then wondering if their orbits intersect. The fact is that, as the solar system formed, the dust slowly coalesced into larger and larger objects with somewhat random orbits. Those objects collided over and over till the general spin of the solar system was all on a single plane in a single direction. 

As they collided, they got bigger and bigger. Some formed planets, others formed moons, others asteroids. The bigger the object, the more likely it was to clear its orbit of other objects. The longer the age of the particular solar system, the more likely the objects have cleared their orbit. Moons are no exception. 

The asteroid belt is an exception though. Jupiter is so big that it's gravitational forces keep breaking up anything that gets too big. This there are still lots of smaller asteroids in there. And they are so far apart from one another that they nearly never collide. 

Our solar system is something like 4.5 billion years old. There has been tons of time for the moons of our solar system to clear their orbits. This means that, generally, they don't even get close to each other's orbits and so they don't collide, at least not anymore.