How The Universe Works Videos : Works : Discovery Channel
http://dsc.discovery.com/videos/how-the-universe-works/
How The Universe Works: Black Holes : Videos : Discovery Channel
http://dsc.discovery.com/videos/how-the-universe-works-black-holes/
Playlist: How The Universe Works
http://www.youtube.com/user/sal1015#g/p
How The Universe Works - Big Bang 1/4 (HQ) - YouTube
http://www.youtube.com/watch?v=AkbnDoOy-aM
How The Universe Works - Black Holes 1/4 (HQ) - YouTube
http://www.youtube.com/watch?v=k3zXv0jS8L4