Cosmos DVD... Carl Sagan's Legacy, out of all the frontier Science and Physics that he shared and explored, was Most Definitely the Cosmos Television Science Documentary. In Cosmos, Carl Sagan Explained the Universe in a way that children as well as adults could understand and accept. He Didn't condescend to the audience with his choice of language or terminology, he simply used Graphical Visualizations of complex theory, that made it more accessable to the general population, Made it More understandable than trying to decipher it in your own mind while listening to technical jargon. Cosmos caught the attention of the Viewer, and drove an inspiration to learn more about the Universe we live in, and Carl Sagan made it fun, made it exciting, and made it real for many of the audience who may have struggled with these concepts in any other form. You Can Order the Complete Cosmos DVD Set Which includes updates from the original show, Dr Carl Sagan had personally made the additions to the original remastered Cosmos, before he passed into the great unknown, and was excited to make revisions of previous theory, now that firm data has concluded a different answer than was originally thought to be. That's the Beauty of Science, sometimes the most likely scenario, isn't the Only possible scenario, and scientist will continue to discover new answers...