Astronomy does not fit easily into human brain

Astronomy is one science that requires numbers which are so large that the human brain has not
evolved to handle them.  This is one reason why robots will be required as earth-based intelligence
expands into "outer space".  Notice the implications of a language where the term "outer space" refers to
the majority of everything excepting only one small planet.

http://www.youtube.com/watch?v=B1AXbpYndGc&feature=related