Wow, never expected to see a Sagan reference in a video game. He was alot more than an astronomer who believed in aliens. He was an avid skeptic, the first modern scientist to write books and produce films aimed at the layman (which caused him much trouble with his peers), and an outspoken atheist.

http://www.youtube.com/watch?v=JkZNnD99Ap4

Check him out. The genius he was is missed by this geek