The first thing that I did not understand about this lousy movie is why would America (N,A.S.A) send only one man on a mission this important. The Chinese sent a least 3 and we still don't know what happened to them. The Chinese it seems were just being used as bad guy's to create some kind of plot tension. This movie was cheap and made very little sense to the science fiction community. The ending was abrupt and made no sense. Some reviewers keep saying it's about a sequel, I think they just ran out of story and didn't know how to end it. There will not be a sequel to this rubbish. Watch it only if you have absolutely nothing else to do or watch.