This was not a great movie. I mean for example, Even NASA (Never A Straight Answer) wouldn't make a six month one way voyage to Mars to spend less than two hours on the planet surface. The premise is hard to buy, but hey, it is science FICTION. The effects are not bad, and the acting is fair. There is a lot of gratuitous sex. Michael Marsden may be the bright spot in this average sci-fi flick. I wouldn't pay to see this in the theatre, but on video.... There are probably worse ways to spend an hour and forty-two minutes.