Alright, so, I need to create a planet to set my sci-fi on. I don't need to nail down all the scientific data, but I need to have a basic understanding of my planet. I want it to be similar to Earth in a lot of way, with a few major differences. Similarities with Earth: - Similar size. Every so slightly smaller, to allow for slightly ever so slightly less gravity. - Similar distance from its host star, such that it would experience the same temperatures if it had the same tilt and rotation. - Orbits a red dwarf star pretty much exactly like ours. Differences with Earth: - Not tilted at all - Rotation is slower. A day on this planet lasts approximately 1.8 Earth days (about 43 hours). - Orbit around the sun is faster, and slightly closer, resulting in a year that is 317 Earth days (about 203 of its own days) - Has 3 moons, all of which do not rotate. All are similar to ours in size. 2 are on opposing tilted orbits at the same distance from the planet, such that their paths across the sky creates a cross with 60/120 angles instead of 90/90 angles. The third moon is further out. - Only has one small continent surrounded by a scattering of tiny islands that are mostly uninhabited. The continent is almost 2 separate land masses, but they're joined by a thin land bridge. The larger segment has about the same area as today's Algeria, while the smaller one would have the same area as Spain & France put together. That's it. This continent is positioned so that it crosses over the equator, but lies 70% in the northern hemisphere. The rest of the planet is ocean with polar icecaps. The continent is covered in temperate-to-tropical rainforest. What would the weather be like? I've read that if Earth slowed by half (48 hour day), we'd have major storms, because of the greater temperature difference between day and night sides. I don't want to create an extremely stormy place, but frequent, moderate winds are good. Perhaps this effect would be less near the equator, given that area heats the most and would thus loose the least heat at night? The dominant species are tree dwellers who evolved from something similar to a sugar glider, and they retained the gliding ability. They're also primarily nocturnal, though the beginning and end of their waking "day" will be the "evening" and "morning" in terms of sunlight, as they won't be sleeping 15+ hours at a time. I'm thinking 9-10 hours would be a normal sleeping time. They sleep during the hottest & brightest part of the day, and are able to see well in the moonlight, but their eyes are adapted to shield against the powerful sunlight for the "daylight" part of their normal waking days / in the event they need to be awake when they would normally be sleeping. Is it reasonable that a tree dwelling species would have stayed smaller (adults standing in the most erect posture they're capable of holding would be around 4'6 or so, with variance for individual genetics and sex differences), or should the fact that this planet has a little less gravity than Earth make them bigger? Is there anything I can nail down in regards to the planet's physical make up, or its electric field, etc. that would allow for light storms in the night sky similar to Earth's aurora borealis? I need something like this to happen over the landmass where the inhabitants would see it (close to the equator), as it is a vital part of their belief system.