Question: In the many shots of the sky above Pandora, we see a variety of seemingly nearby moons around the planet. I'm no astrophysicist, but it seems to me that many orbiting objects would result in a chaotically unstable situation which could not be expected to long endure. Any astrophysicists out there?
stevewaclo
26th Jul 2023
Avatar (2009)
Answer: Not an astrophysicist, but to be clear, Pandora is not a planet. It's one of 14 moons orbiting a gas giant (Polyphemus). Thus, it would be the planet and the sun's gravitational pull that would most affect Pandora, in terms of tides. Since the other moons aren't in orbit of Pandora, their pull would be significantly less and would have minimal effect, but would presumably cause more eclipses than what we have on Earth. Pandora also has an atmosphere, which helps provide stability and allowed for life to develop. There are moons in our solar system with atmospheres and bodies of water, which in theory could support life. But it's unlikely that the reason life hasn't developed on these moons is because of some chaotically unstable situation.
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Answer: My bad on the planet/moon thing. You make excellent points, but again, those other moons in Pandora's sky are huge and appear very close. Gravity effects would have to be substantial and disruptive on the entire moon system. Thanks for correcting me.
stevewaclo ★