Using state-of-the-art computer graphics, this fascinating speculative documentary dramatizes what might happen if and when we discover life on other worlds. The film follows three robotic probes sent to a planet with a binary sun and gravity comparable to Earth's where they find a thriving ecosystem supporting a vast array of organic life. Features commentary by Stephen Hawking, NASA Chief Scientist James Garvin, filmmaker George Lucas, and more. 94 min. Widescreen (Enhanced); Soundtrack: English Dolby Digital stereo.