The science spinoffs from NASA are marginal to non existent. I think you are grossly mistaken. This site lists several examples: http://www.sti.nasa.gov/tto/
Biology, medical sciences, communications, computer chips, remote sensing, metalurgy, material sciences, physics and chemistry are just the tip of the ice berg.
I went to the website to search one of "their" spinoffs of which I'm very familiar with (I invented it years prior to NASA and have the patent and research to back it up). The NASA search engine kept locking up, it never worked. NASA claimed it was "their" baby and would revolutionize the field until they went to file a patent and found it was invented elsewhere. Besides the infringement (they actually used it several times on space missions), they seemed to have lost any and all interest in this "revolutionary" technology. I'm not saying all of NASA are a bunch of kooks, but I will say a good deal of time is spent by them justifying their existence by less than upright means.
I will go back and try to find something useful and justified by the cost that they have done. I am hopeful something turns up.