According to the Office of Management and Budget and the Air Force Almanac, when measured in real terms (adjusted for inflation), the figure is $790.0 billion, or an average of $15.818 billion dollars per year over its fifty year history (NASA's 2011 budget is on a continuing resolution of the 2010 budget at $18.724 billion)

NASA at least has done some good at a fraction of the cost in Afghanistan.

Priorities.