Nasa's budget is half a cent of your tax dollar. The advancements in technology and how they have impacted the economy are tremendous. Why attack NASA when so much is wasted on the defense budget. More is at stake. We need to advance our technology and colonize other planets so that we can make sure that we don't go extinct as a species. I'm all for cutting government pork and using the $$ wisely, just don't take it out of something that gives back SO much return.
http://er.jsc.nasa.gov/seh/economics.html
http://thehill.com/special-reports/technology-july-2009/50201-numerous-benefits-of-space-exploration