The 2009 science fiction movie AVATAR hinted at the future possibilities of the final frontier of Human Civilization, the film portrayed what a human colony might look like and what kind of logistics would be involved to travel and live in the cosmic neighbourhood, the upcoming movie would explore the rest of the moons in the planetary system, as seen in the trailer, we can expect an ocean moon, with very/little continents.
Based on the 5000+ discovered exoplanets and star systems, the planetary system shown in AVATAR is very realistic, a similar fictional planetary system was shown in the series of COSMOS Possible World’s which was inspired by the TRAPPIST - 1 star system
"TRAPPIST-1 Planet Lineup" by the US Department of State is licensed under CC BY-NC 2.0.
It might surprise you that astronomers have found an earth-sized planet in the Alpha Centauri Star System. (actually, the movie is set in the year 2154 in the Alpha Centauri Star System)
The blue-skinned Indigenous humanoids live on the Planet/ moon Pandora orbit around a Jupiter like Gas Giant, the amazing life forms shown in the movie (horse-like creatures with six legs and pterosaur like dragons) appear biomechanically feasible as the planet/moon has a weaker gravity due to its smaller size, it’s atmosphere has some gases toxic to humans, that’s why they gotta wear gas masks.
"Avatar Hallelujah Mountain" by virtualwayfarer is licensed under CC BY-NC 2.0.
The moon-planet Pandora has continents covered in tropical rainforests. Pandora also has significant amounts of a precious fictional element called unobtanium, which has shaped the most interesting landscapes shown in the movie, the floating Hallelujah Mountains are inspired from a real place in China, where tall sandstone Qiankunzhu pillars are present.