MSNBC has an important article on the seven biggest myths of the Challenger disaster, at least one of which I'm sure you think is true right now. The myths include that the nation watched the shuttle destroyed live, that the astronauts were killed instantly, and that the shuttle even exploded at all. Oddly enough, I think it was Geraldo Rivera who first blew the lid of the myth that the astronaut died quickly and painlessly. I remember watching a TV special in the late eighties where Geraldo quoted anonymous NASA officials as saying they could hear the astronauts screaming on the radios as the cabin went down, and how their bodies were secretly collected in garbage bags and transported in unmarked vans for burial. Truth is a rare thing these days.