1. A question of money
The House Committee on Science and Technology held Congressional hearings this year to examine the summary report of the Review of US Human Space Flight Plans Committee. While it heard the challenges of future human space exploration and the alternatives to NASA's plans one of the most important discussions centered on the conclusion that "Human exploration beyond low-Earth orbit is not viable under the FY 2010 budget guideline." If further manned exploration of the moon and beyond is significantly delayed or nixed altogether, what does that mean for the myriad technologies NASA already has in development? Here we take a look at some of the best NASA technology currently in development that might never get to space.