CAPE CANAVERAL, Fla. – Space shuttle Atlantis rolls out of Orbiter Processing Facility 1 at NASA's Kennedy Space Center in Florida to roll over to the Vehicle Assembly Building. First motion was at 11:30 a.m. EDT. In the VAB, Atlantis will be lifted into High Bay 3 and mated to the solid rocket booster-external fuel tank already installed on the mobile launcher platform. Atlantis is targeted to launch May 12 for the STS-125 Hubble servicing mission. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – On its transporter, space shuttle Atlantis rolls toward the open door of the Vehicle Assembly Building after leaving Orbiter Processing Facility 1 at NASA's Kennedy Space Center in Florida. First motion was at 11:30 a.m. EDT. In the VAB, Atlantis will be lifted into High Bay 3 and mated to the solid rocket booster-external fuel tank already installed on the mobile launcher platform. Atlantis is targeted to launch May 12 for the STS-125 Hubble servicing mission. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – On its transporter, space shuttle Atlantis rolls toward the Vehicle Assembly Building (in the background) after leaving Orbiter Processing Facility 1 at NASA's Kennedy Space Center in Florida. First motion was at 11:30 a.m. EDT. In the VAB, Atlantis will be lifted into High Bay 3 and mated to the solid rocket booster-external fuel tank already installed on the mobile launcher platform. Atlantis is targeted to launch May 12 for the STS-125 Hubble servicing mission. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – On its transporter, space shuttle Atlantis rolls toward the Vehicle Assembly Building after leaving Orbiter Processing Facility 1 at NASA's Kennedy Space Center in Florida. First motion was at 11:30 a.m. EDT. In the VAB, Atlantis will be lifted into High Bay 3 and mated to the solid rocket booster-external fuel tank already installed on the mobile launcher platform.Atlantis is targeted to launch May 12 for the STS-125 Hubble servicing mission. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Space shuttle Atlantis rolls into the transfer aisle of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. First motion was at 11:30 a.m. EDT. From the transfer aisle, Atlantis will be lifted into High Bay 3 and mated to the solid rocket booster-external fuel tank already installed on the mobile launcher platform. Atlantis is targeted to launch May 12 for the STS-125 Hubble servicing mission. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Space shuttle Atlantis begins rolling out of Orbiter Processing Facility 1 at NASA's Kennedy Space Center in Florida to roll over to the Vehicle Assembly Building. First motion was at 11:30 a.m. EDT. In the VAB, Atlantis will be lifted into High Bay 3 and mated to the solid rocket booster-external fuel tank already installed on the mobile launcher platform. Atlantis is targeted to launch May 12 for the STS-125 Hubble servicing mission. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – Space shuttle Atlantis is ready to move out of Orbiter Processing Facility 1 at NASA's Kennedy Space Center in Florida and roll over to the Vehicle Assembly Building. In the VAB, Atlantis will be lifted into High Bay 3 and mated to the solid rocket booster-external fuel tank already installed on the mobile launcher platform. Atlantis is targeted to launch May 12 for the STS-125 Hubble servicing mission. Photo credit: NASA/Jack Pfaller