Centennial Challenges in FY 2010 Budget Proposal

Here's information about the Future Centennial Challenges budget proposal from the Administration:

FY 2008 Actual FY 2009 Enacted FY 2010
0.0 0.0 4.0
...
Topics for future challenges that are under consideration include revolutionary energy storage systems, solar and other renewable energy technologies, laser communications, demonstrating near-Earth object survey and deflection strategies, innovative approaches to improving the safety and efficiency of aviation systems, closed-loop life support and other resource recycling techniques, and low-cost access to space.