I'm all in favor of science, but let's face it: Mars will still be available for exploration fifty, a hundred years from now or more. We're not in a cold war arms race with Soviet Union or anybody else -- so do we really need to be writing blank checks to Lockheed Martin?
Our genius president thinks so, but he believes there's no scientific evidence of global warming. We'd have been better off if Scalia hadn't sabotaged Al Gore, who just might have analyzed "prior attack on World Trade Center + Al Quaeda operatives not interested in landing large aircraft = ???"
Of course Gore wasn't listening to PNAC fascists who were hoping for "a new Pearl Harbor" to justify their imperialistic military adventurism. Its just like Vietnam -- Nixon saw Patton and invaded Laos; Bush saw Total Recall and invaded Mars.
We don't need more missile technology and spy satellites. We need to get our "boots on the ground" and start deploying earthly photovoltaic and fuel-cell technology. SS Major Wernher von Braun wasn't "exploring space" at Mittelwerk, and NASA isn't "doing science" on Mars. We've got plenty of science right here.