if you go through this tunnel — through this wormhole — you'll go from one moment in time to a different moment in time. Go one way, you'll travel to the past, the other way, travel to the future.

NOVA: What do you think it would be like to travel through a wormhole? Hear Sagan via RealAudio Sagan: Nobody really knows, but what Thorne has taught me is that say, for example, you were going ...

It’s set in a dystopian future where Earth is suffering from catastrophic blight and famine, and it follows a group of astronauts who travel through a wormhole near Saturn in search of a new ...