Introductory Astronomy Complete University Course - 61 Cygni Proper Motion

This loops shows the proper motion of the first binary star for which the distance was known. 61 Cygni is an important milestone in knowing the size of our universe. See all of Jason’s videos in the online class series here: http://www.jasonkendall.com Gimme Five by Twin Musicom is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/by/4.0/ Artist: http://www.twinmusicom.org/