NASA's New Citizen-Inventor Space Challenges Revealed, With Bigger Prize Fund

NASA today revealed its newest batch of Centennial Challenges. As well as pointing to future directions for space science, they're a gentle booster for President Obama's plans to get more people involved in the space biz--including you. 

The Centennial challenges are competitions a bit like the X-Prize that NASA uses to encourage novel thinking about space missions from non-government bodies, and these are the first new ones since 2005. The hope is that the space industry gets a nice...