ocr: - J 9 or The NERVA project PERSPECTIVES AND PROJECTS PERSPECTIVESAND PROJECTS DEIOS PROJECTE - MARS ONE PROJECT Mars on hold In1 1970, Arthur C. Clarke tempered his optimism with a bit of tongue-in-cheek humor when he remarked, "The cost of space travel will continue to drop. Ten years ago it was horrifying. Today it is merely exorbitant. In a few years it will be extravagant, and toward the end of the century it will merely be very high. At the beginning of the 21st century, the trip from the Earth to the Moon will be little more than an ordinary commercial transaction." - However, itseems th ...