Free video course taught by an astronomer: The Sun and the Total Eclipse of August 2017 http://boingboing.net/2017/08/15/free-video-course-taught-by-as.html …pic.twitter.com/cOS9KtIMNS
4:30 AM - 16 Aug 2017
0 replies
4 retweets
7 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.