There is plenty of money to be had for NASA, Congress simply needs to do its job better to get it. Stop monkeying with the tax code and make corporations actually pay income tax and there will be plenty of revenue. Stop giving already profitable industries tax credits. Big Oil is going to get 20 billion in tax credits, deductions, and actual subsidized dollars handed to them. Take 15% of that and hand it back to NASA and they can fund, for example, any of the several proposed follow-on missions for Cassini and send an airship to Titan to do further and more detailed exploration of one of the more earth-like bodies in our solar system, and make use of the single window of opportunity we will have prior to 2050 to get there. Or create a corporate version of the alternative minimum tax so that no Fortune 5000 company gets to skate tax-free and then use those funds to begin a program of not just Lunar exploration, but the establishment of a permanent base on the moon. But most importantly, if we don't better fund the Near-Earth Object search, none of the other things will matter at all.