Twenty minutes in, Christina starts her hand motions. Wrap it up, Buzz. It would be a lot easier if he just had a canned presentation, a little motivational speaking for the people, dream the impossible dream, reach for the stars -- normal hero stuff. But that is not Buzz. He is a man of science. He has important space concepts to share, beseeching mankind to understand. He's delivering the speech he would to serious space-minded politicians and science foundations thirty years ago, but now the audience has morphed into Trekkies and Star Wars hobbyists.

Previously, previously, previously, previously.