My astronomy professor and former vice chair of the board at SETI talks about astronomy in layman's

[SM0K3 B4N4N4]

My professor talks about things like the recently discovered earth sized planet and dark matter in ways people who aren't into astronomy would understand.
[video=youtube;9drmU_YVfm4]http://www.youtube.com/watch?v=9drmU_YVfm4[/video]

[SM0K3 B4N4N4]

I seriously hope those useful ratings aren't a double meaning.

[XXXmags]

Good talk.