Disappointing adaptation of the Sci-Fi novel. While the special effects are pretty decent, especially the zero G training has some interesting scenes you haven't seen like that before. And while there are great names among the adult actors, most of the kids just do not work. It's also the script's fault that they come across as brats, especially the main character. Everything just works out miraculously for him, chosen one and all that jazz. Sure, there is a pretty dark twist later one and the ideas that come from that make for an interesting ending, turning a lot of the military bravado from earlier on its head, but by then it's too late: you don't care about anything happening on the screen for a while already.