It had a good idea, but I can't say that I'd really recommend it to anyone except a diehard sci-fi fan that can handle slow movies where almost nothing happens. It wasn't terrible, but it wasn't exciting either, so be warned.
The language part goatface mentioned was definitely confusing at first, then just sort of annoying. Knowing what they said, while not totally necessary, definitely helps, and will sort of nag at you when you don't.