Google Lunar X Prize. The total purse of the Google Lunar X PRIZE is $30 million (USD). It ges to a team who successfully lands a privately funded craft on the lunar surface which survives long enough to roam the lunar surface for 500 meters and send a defined data package (“Mooncast”) back to Earth. See 8-minute video — It's cool!
Weightless Challenge. NASA is hosting two national science competitions that challenge student teams to develop and prepare a microgravity experiment. Proposals are due Nov. 1. "Dropping In a Microgravity Environment," or DIME, is the competition for high school student teams. "What If No Gravity?" or WING, is the competition for student teams in sixth through ninth grades.