Hey everyone. A little introduction before I ask my questions. I enjoy playing Dungeons and Dragons a lot. For those that don't know, it's a tabletop fantasy game for supreme nerds like myself to enjoy and act out adventures filled with epic magic and battles and more of the such. Lately I've been building up my own campaign for my friends to play in. Now since it's a fantasy world there's a lot of things that obviously don't follow the laws of physics, on the other hand it just doesn't feel right to world build certain things without some semblance of realism to them. These are the things that I'd like to find out about which my questions will touch on. I've tried to Google some of these questions but tend to come up short in my searches. 1. To start with, the most frustrating of which to me, is the subject of planetary rings around life-supporting terrestrial planets. Googling this subject merely turns up artist renditions of how said rings would appear in the sky when viewed from the planet's surface. Although these depictions are quite interesting to view, what I'm really looking for is what kind of effects these rings would have on the environment and ecosystem of a planet that supports life. The reason I ask this is because I'm aware our own Moon acts as a sort of shield for our planet against meteors and steroids, drawing them to it instead of us. So what would happen to the surface of the planet and what would life on the planet experience on a regular basis from a system of planetary rings in orbit? 2. Next up is the subject of multiple moons or around a life-supporting planet. Tidal forces seem like an obvious effect to me, and I'd like as detailed a breakdown on this as possible without throwing numbers in. One of the things I've considered for my D&D world was two moons that are on the exact same orbital path and have the same orbital period around the planet, but are located on opposite sides of the planet. I really like the idea but at the same time it seems like a very unlikely scenario, but then again, if there an infinite number of possibilities in the universe then maybe this could be one of them. Anyway I'm interested in any other effects that multiple satellites would have on a planet that I'm likely unaware of. 3. Continuing on the subject of moons, I also have a scenario where a planet's moon has the exact same orbital period around its planet as the planet does around its star. In other words, if one were to view the solar system from the top and draw a triangle connecting the planet, its moon, and the star, the triangle would retain the exact same dimensions at all points on the planets orbit. Just thinking about it, it does seem like a feasible scenario, but I'd certainly welcome any information and thoughts on the subject. 4. Still on the subject of moons, another scenario in my mind is that of a satellite with terrestrial properties (if there are even any other types of satellites) capable of supporting life. This also seems like a very good possibility as I understand a few satellites in our own solar system have come under serious consideration for this scenario. So on this one I'm rather more interested in the environmental differences that would arise from orbiting a gas giant, like how life would adapt to the world passing through the gas giant's shadow regularly. 5. Along similar veins as the first question, I remembered an episode from the TV series Stargate SG-1 where a planet skirted along the edges of an asteroid belt every hundred years or so, illuminating the sky with shooting stars during each such event. What I wanted was to use a similar scenario as a way for the planet's cultures to mark the long-term passage of time. Since it would be rather important for these "fire rains" as I called them (kinda cheesy, I know) to be consistent, I figured the asteroid belt should be the same distance from the star as the planet, but on a different inclination (like Pluto) so that they intersect only twice in the planet's year. It sounds like a good idea in my head but seems a bit far-fetched at the same time, I'd assume the planet's gravity would eventually just drain the asteroid belt of its constituents. 6. Finally, I'm interested in basically a combination of the first two questions. Essentially, a terrestrial life-supporting planet with planetary rings and two or more moons. Obviously this is dependent on the answers to the first two questions. This is probably the scenario I desire most for my D&D world despite being such an extreme scenario. Am I being too greedy here, or is this a possibility? After all, though not terrestrial and devoid of life so far as we know, all four of our gas giants possess both rings and satellites, so, why not terrestrial planets? Infinite possibilities and all, right? So that's it for all of my questions. After seeing other threads, mine seems a bit paltry in comparison, but I am nonetheless very interested in what people might think about my scenarios. Thanks in advance! P.S.: I wasn't really sure what prefix to put this under so I just chose B by default lol.