P.J. O’ROURKE: Candidates in Orbit: The late, great U.S. space program. “The surprise about the space policies of Barack Obama, Mitt Romney, Newt Gingrich, and (to the extent they have any) Rick Santorum and Ron Paul is how alike they are. Obama’s space policy doesn’t differ much from George W. Bush’s. There always was going to be a long gap between the end of the shuttle and the beginning of something new. Both presidents were stingy with cash and vague with objectives, though Bush’s vagueness was more stirring.”