Clark Lindsey notes that, despite the fact that the prizes haven't been won yet, Centennial Challenge is working. Which means, of course, that the Senate is now trying to kill it.

As Clark says, we'll have to mobilize to save (or worst case, if we can't win in conference) restore this funding next year. There are people spending a lot of time and sweat, and money, in the hopes of winning these prizes. It would be a tragedy if the prizes were snatched away now. Unfortunately, it would also be typical, and an example of why it's hard to make government-funded prizes work, given the fickleness of the governors.

And of course, it's one of the few really cost effective things that NASA is doing, in terms of advancing us in space.