Atlantis is to blast off at 6 a.m. UTC . The 12-day mission will be the final mission for NASA 's shuttle program . Atlantis is scheduled to deliver spare parts and supplies to the international space station to help keep the orbital lab going , NASA said . Atlantis will deliver spare parts to space station .
Atlantis is to blast off at 6 a.m. UTC . The 12-day mission will be the final mission for NASA 's shuttle program . Atlantis will deliver spare parts to space station .