speaking of Carl Sagan (this is a tendril I guess) I just heard that he was one of the people responsible for researching the effects of a nuclear missile fired at the moon--which apparently our good government was considering doing back in the day when they thought the Russkies would get their first...we did not have capability to land a man there in a sapceship but apparently our proudest achievement of the moment, the A-bomb, was something we wanted to blast into space just to show those Commies a thing or two about the good ole U S of A...