ANYONE with a bit of tech savvy and access to a BIG telescope, PMT and laser can hit the retro-reflectors left behind by the various moon landings, and measure the transit time to determine range. A Discovery Channel show, a few years ago, showed how some people a Univerity Hawaii physics department did it with a few days work to gather the needed pieces. So did the Mythbusters. http://www.youtube.com/watch?v=3DVmVxSFnjYCA How do the conspiracy theorists explain THAT fact away? --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .