As it stands now it's hard to argue with Neil Armstrong, Gene Cernan, and Jim Lovell about the challenge-less Obama plan. I honestly don't understand why we can't keep the shuttle running, help commercial space, keep the ISS until at least 2020, return to the moon and go to Mars. It is expensive, so we should take money from other inflated budgets, mainly the defense budget, to fund these ambitious projects. We need more MANNED space exploration, probes can only do so much.