So today we remember the 150th anniversary of the beginning of the Civil War, the 50th anniversary of first human to venture into outer space, and the 30th anniversary of date of the first launch of the space shuttle. (And probably a whole bunch of less well known anniversaries as well.) NASA created this little video which seems to work for the three major ones. (Embed not cooperating – sorry.)

http://www.nasa.gov/multimedia/videogallery/index.html?media_id=79119001