Dr. Carolyn Porco

Forty years after their launch, the intrepid Voyager probes are the subject of a new documentary from PBS. 

The Cassini-Huygens Mission to Saturn is a multinational cooperation between three space agencies and 17 nations, with a total cost of over $3 billion. Launched in 1997, its goal was to orbit Saturn and its moons, and probe the atmosphere of Titan and land on its surface. The spacecraft has ...