Tyson is an advocate for expanding the operations of the National Aeronautics and Space Administration. Arguing that "the most powerful agency on the dreams of a nation is currently underfunded to do what it needs to be doing". He has suggested that the general public has a tendency to overestimate how much revenue is allocated to the space agency. At a March 2010 address, referencing the proportion of tax revenue spent on NASA, he stated, "By the way, how much does NASA cost? It's a half a penny on the dollar. Did you know that? The people are saying, 'Why are we spending money up there...' I ask them, 'How much do you think we're spending?' They say 'five cents, ten cents on a dollar.' It's a half a penny."