Exciting news about Saturn's moons and distant galaxies, future missions to Earth's moon and promising findings about hurricanes on Earth were just a few of the developments in 2007.

Planetary scientist Carolyn Porco says, ''I'm going to take you on a journey.'' And does she ever. Showing breathtaking images from the Cassini voyage to Saturn, she focuses on Saturn's intriguing largest moon, Titan,with deserts, mudflats and puzzling lakes, and on frozen Enceladus, which seems to shoot jets of ice.