Carl Sagan Christmas Lectures 3: The History of Mars - 1977
I see that this lecture is uploaded on youtube only in parts, so here is this fantastic lecture about planet Mars in whole.
Watch video Carl Sagan Christmas Lectures 3: The History of Mars - 1977 online without registration, duration hours minute second in high quality. This video was added by user mrnobodysprincess 06 December 2016, don't forget to share it with your friends and acquaintances, it has been viewed on our site 73,320 once and liked it 982 people.