Cosmos: A Personal Voyage is a thirteen-part television series written by Carl Sagan, Ann Druyan, and Steven Soter, with Sagan as global presenter. It was executive-produced by Adrian Malone, produced by David Kennard, Geoffrey Haines-Stiles and Gregory Andorfer, and directed by the producers and David Oyster, Richard Wells, Tom Weidlinger, and others. It covered a wide range of scientific subjects including the origin of life and a perspective of our place in the universe.
The series was first broadcast by the Public Broadcasting Service in 1980, and was the most widely watched series in the history of American public television until 1990's The Civil War. It is still the most widely watched PBS series in the world.
Some are in the new HD youtube format and each are in approximate 10 minute sequences
making up 6 or 7 parts to each subject or chapter to his series.
These could be downloaded and complied to compliment your video library.
This is one link to the HD youtube which will help you to follow the links:
http://www.youtube.com/watch?v=mJ9oZwZaBdkCarl Sagen site:
http://www.carlsagan.com/