Joseph Kosinski's sci-fi adventure, starring Tom Cruise, is the most incoherent piece of storytelling since John Travolta's Battlefield Earth. It had critic David Edelstein crying, "What? What?" over the din of the explosions.
Barbara Bogaev interviews astronomer and writer Donald Goldsmith about the future of space travel. He was the consultant to the PBS documentary film "Voyage to the Milky Way" (TV/Books) and is the author of the companion book.