Yeah that was your original claim but you still haven't proven it.
NASA has used nuclear energy for space probes for decades. They were always part of NASA budget.
NASA newest mars rovers (to be launched in 2011) has an RTG (nuclear decay reactor) to power it. It was developed with NASA funds (as have the dozen other problems launched in the past with nuclear power sources).
You make a claim that reactors for Mars mision will be off-budget and thus hide true cost but a dozen post later you haven't provided anything to backup that false and dubious claim.
![](http://upload.wikimedia.org/wikipedia/commons/5/58/Mars_Science_Laboratory_mockup_comparison_.jpg)