Earth is dying, and it's up to intrepid astronaut Matthew McConaughey to find mankind a new planet to colonize. The clock is ticking, man, hurry up! Christopher Nolan (The Dark Knight, Inception) directs this grand, galaxy-spanning space adventure--which manages to be both artistically dreamy and science-geeky smart. Ther are plenty of moments when it swings too far in both directions--but it's still a sight to behold on the big screen. 169 minutes PG-13.