i always loved the "commercial space industry".......you take in a billion dollars...then the thing goes boom and you say "oops, next time we'll do it better"....one of the best i've seen is gtem.pk (globetel?) they have a "stratolite".......great idea if they ever get the blimp in the air....the one i'd love to actually have a piece of is "VIRGIN GALACTIC"......I CONTACTED THEM OFFERING TO THROW MONEY AT THEM FOR A PIECE OF THAT ACTION.....to date, no response...