Sagan was very good at helping people to understand the cosmos. He gave the 1977/1978 Christmas Lectures for Young People at the Royal Institution. He wrote (with Ann Druyan, who became his third wife) and made the very popular thirteen-part PBS television series ""; he also wrote books to help science become more popular ("The Dragons of Eden", which won a Pulitzer Prize, "Broca's Brain", etc.) and a novel, "Contact", that was a best-seller and was made into a film starring Jodie Foster in 1997. The film won the 1998 Hugo Award.