★★★★★ In the last five minutes before Star Wars flattened of all science fiction (in spite of it being science fantasy) we still got movies like this one from the brain of Doug Trumbull, the SFX master who realized Kubrick's aims on "2001." This is slowly paced, grandly scaled, and utterly humane, a story about desperate humans in outer space coping with the unfitness of Earth as a livable planet.