The film was an incredible blend of what makes us human, good and bad. I saw it twice and both times I was shocked how it had passed by so quickly.
The film demonstrates realism through research. The mech suits are not that far away...look it up! The lower gravity making for taller trees and creatures etc. VERY WELL MADE.
The real soul of this film is just that, the human spirit. So wonderfully the movie depicted the duality of human kind, our greed and our capacity for growth. Our fighting spirit against all odds, and our childlike delight in new and fantastic things.