The Wirefly X Prize Cup was a three-ring circus of space-related entertainment for the thousands of spectators who filed in to experience rocket launches and flight simulations, meet astronauts and tech dignitaries, and watch teams of engineers vie for $2 million in NASA-sponsored prize money. But although the action was brisk, all three of the NASA prizesthe $200,000 Climber Challenge, the $200,000 Tether Challenge and the $2-million Northrop Grumman Lunar Lander Challengewent unwon over the course of the weekend.