[lbo-talk] NASA pays for itself?

[John Thornton]

I have a student who made the claim that NASA actually brings in 
revenues that exceed the Govt. expenditures for NASA.
He couldn't remember where he had read this.
I suspect some persons blog or some cranks website.
Does anyone here know if this is true?
Or where I can find out?
I've searched NASA's site and don't find anything there.
Surely the GAO tracks NASA's revenue generating activities?

John Thornton