Space Tourism Faces Governmental Safety Regulations By JOHN ANTCZAK     LOS ANGELES (AP) -- Thrill seekers are plunking down six figures to ride rockets that haven't even been built yet, and a new airline called Virgin Galactic promises to be up and soaring in the next three years. Still, the budding space tourism industry faces a myriad of safety concerns - in the sky and on the ground - that must be resolved before any paying passenger takes off...