Combined with Pandora's twenty-percent lower gravity, a freely falling object's maximum speed is significantly less than on earth.
The increased air resistance within this denser atmosphere has a number of effects: The hydrogen sulfide present is also quite poisonous concentrations over 1000 ppm (0.1 %) can cause immediate collapse with subsequent loss of breathing, even after inhalation of a single breath. The high concentration of carbon dioxide in the Pandoran atmosphere makes it extremely poisonous to humans, rendering them unconscious in about 20 seconds and causing death in about 4 minutes when they venture out unprotected by specialized breathing masks. Pandora's atmosphere is a mixture of nitrogen, oxygen, carbon dioxide (>18%), xenon (>5.5%), methane, and hydrogen sulfide (>1%) and is about 20% denser than the atmosphere on Earth primarily due to the high percentage of Xenon a heavy, colourless, odourless, and generally unreactive noble gas.
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This possibly explains the Na'vi's blue skin color, which most likely provides them better camouflage at night on Pandora. Pandora looks like a lush paradise by Earth standards during the day, but at night, virtually all life on the moon exhibits bioluminescent qualities in various shades of blue, purple and green. Pandora and the other moons cast large black shadows on Polyphemus.
Depending on the position of the various moons, Pandora can have two or even three moons in its sky at once. Pandora's wildlife also have bioluminescent qualities. Creatures roam the air and forest canopy below, similar to Earth's animals, but on a scale several times larger. Due to Pandora's lower gravity, most creatures on Pandora are hexapods (six-legged), although the Na'vi resemble humans and have only two legs. However, due to the smaller size, its gravity is 20% less than Earth's. Pandora, despite being almost as large as Earth, is only a moon of the gas giant Polyphemus, which has thirteen other moons. The trees and plant life of Pandora have formed electrochemical connections between their roots and effectively act as neurons, creating a moon-wide "brain" that has achieved sentience, which is known to the Na'vi as Eywa. They have the familiar trunks, branches and leaves, though due to the difference in gravity, many of the shapes appear strange to humans and the proportions are greater because of the lower gravity. Other than the richness of varying colors, the trees resemble those of Earth. In the canopy below, other deadly yet exotic animals roam: vicious packs of viperwolves, thick skinned hammerhead titanotheres and the most fearsome creature of all, the thanator. The Na'vi also ride the mountain banshee to hunt from the air, but the hunter can become prey in the presence of the great leonopteryx. One of the creatures on Pandora is the direhorse, a gray-skinned, hexapodal horse-like animal with bioluminescent qualities that the Na'vi ride when hunting. Even from orbit, the scope of florae present on the surface indicates a moon brimming with life. To the cultures of Earth, Pandora is a mysterious, primal and terrifying exoplanet. The news services love to run clips of the wild scenery on Pandora and its bizarre flora and fauna. Pandora is the fifth moon of the gas giant Polyphemus (both names reference figures in Greek mythology), which orbits Alpha Centauri A in the Alpha Centauri System, the closest star system to human's own Solar System,ĭiscovered by space telescopes at some point between 20, the Earth-like Pandora has been the single most interesting thing to happen to the human race in hundreds of years. Nitrogen, Oxygen, Carbon Dioxide (over 18%), Xenon (5.5%), Methane and Hydrogen Sulfide >1% It's kinda the Garden of Eden with teeth and claws.