I'm glad someone agrees. I thought it was a load of pretentious *******s. Good performances, well made and stunningly shot, but overlong and too complicated. I'm all for complex stories a la Incepetion, but to a point.
It was the sentimentally of many of the characters that spoiled it for me. "Boo hoo, my daddy left me to go on Space Mission to save humanity and I'm gonna be really mad at him for the next 30 years!"