X PRIZE Cup - The X PRIZE Cup is be replaced by the Lunar Lander Challenge for 2008. Archive of 2007 X PRIZE Cup and the Holloman Air and Space Expo.
Northrop Grumman Lunar Lander Challenge - An X PRIZE Foundation competition, the Northrop Grumman Lunar Lander Challenge is designed to accelerate commercial technological developments supporting the birth of a new generation of lunar landers capable of ferrying payloads or humans back and forth.
Rocket Racing League - Learn about the aerospace sport and entertainment organisation that combines the competition of racing with the excitement of rocketry. Rocket Racing League competes at the annual X PRIZE Cup and other air shows.
Wikipedia: Wirefly X PRIZE Cup - Article about the Wirefly X PRIZE Cup, an annual X Prize Foundation space expo designed to encourage innovation in the private sector.