this be an alien copycat that doesn not have scary monster and the plot be mix up . the astronaut inhabit by alien for some reason be only inhabited part of the time . why . i do not know and it doesn not matter . you know they be inhabit because they all of a sudden speak in a stupid computerized scary voice that isn not scary . the astronaut go place and but it doesn not matter . then and they rip off the terminator by have another alien that can kill them . by this time you be extremely bored and do not care . there be and however and lot of explosion . and there be the obligatory man run away from large explosion just ahead of the leaping flame scene . yawn .