The biography on the Pandora native species.
How, What, Who?
Pandora is the fifth moon of the gas giant Polyphemus, which orbits the closest star to the sun, Alpha Centauri A. Discovered by Dr. James Cameron using his company Lightstorm, his crew used space telescopes at some point between 2050 and 2077, and discovered Pandora. Finding Pandora has been one of the greatest scientific finding to happen to the human race in hundreds of years.
Dr. James Cameron was originally trying to get to Polyphemus, when his ship needed to refuel so they landed on Pandora. Dr. Cameron noticed a species that was very similar to the human species on Earth, and he canceled his mission to Polyphemus and dedicated his research to understanding and knowing the creatures on Pandora.
Pandora is a moon to the gas giant Polyphemus, which has thirteen other moons. However, even though Pandora is around the same size as Earth, its gravity is 20% less than Earth's. Due to Pandora's lower gravity, most creatures on Pandora are hexapods (six-legged), but the Na'vi (the human like species) have only two legs. Wild species travel in the air and roam forest canopy below, similar to Earth's animals, but on a scale several times larger. Pandora's wildlife also have bioluminescent traits. Since Polyphemus has several moons, during the night there could be many moons in view of the sky, even three moons in its sky at once.
Visually Pandora's lush paradise is similar to Earth's standards during the day, but at night, almost all life on the moon shows off it's bioluminescent qualities in various shades of blue, purple and green. Most plants light up the night with just a single touch, while others light on their own. This possibly explains the Na'vi's blue skin color, which most likely provides a better camouflage at night on Pandora.