Here it is, folks: the end. In our final episode of Crash Course Astronomy, Phil gives the course a send off with a look at some of his favorite topics and the big questions that Astronomy allows us to ask.
Aired:
01/20/16
| Expires: | Runtime: 11m 09s
You are leaving GBH.org
You are leaving gbh.org and going to a web page that is not owned by GBH. If you are streaming, your experience will be interrupted.