Star Stuff Carl Sagan and the Mysteries of the Cosmos

For every child who has ever looked up at the stars and asked, 'What are they?' comes the story of a curious boy who never stopped wondering: Carl Sagan. When Carl Sagan was a young boy, he went to the 1939 World's Fair, and his life was changed forever. From that day on he never stopped marveling at the universe and seeking to understand it better.