CAPE CANAVERAL, Fla. – After rollback of the rotating service structure, or RSS, on Launch Pad 39A at NASA's Kennedy Space Center in Florida, space shuttle Endeavour waits for launch. First motion of the RSS was at 10:15 a.m. EDT. The rollback is in preparation for Endeavour's liftoff on the STS-127 mission with a crew of seven. This is the second launch attempt for Endeavour after the June 13 launch was scrubbed due to a hydrogen leak at the Ground Umbilical Carrier Plate during tanking June 12. The launch will be Endeavour's 23rd flight. The shuttle will carry the Japanese Experiment Module's Exposed Facility, or JEM-EF, and the Experiment Logistics Module-Exposed Section, or ELM-ES, on STS-127. The mission is the final of three flights dedicated to the assembly of the Japan Aerospace Exploration Agency's Kibo laboratory complex on the space station. Endeavour's launch is scheduled for June 17 at 5:40 a.m. EDT. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – On Launch Pad 39A at NASA's Kennedy Space Center in Florida, technicians in the control booth (lower left) begin to roll away the rotating service structure, or RSS, from space shuttle Endeavour. First motion was at 10:15 a.m. EDT. The rollback is in preparation for Endeavour's liftoff on the STS-127 mission with a crew of seven. This is the second launch attempt for Endeavour after the June 13 launch was scrubbed due to a hydrogen leak at the Ground Umbilical Carrier Plate during tanking June 12. The launch will be Endeavour's 23rd flight. The shuttle will carry the Japanese Experiment Module's Exposed Facility, or JEM-EF, and the Experiment Logistics Module-Exposed Section, or ELM-ES, on STS-127. The mission is the final of three flights dedicated to the assembly of the Japan Aerospace Exploration Agency's Kibo laboratory complex on the space station. Endeavour's launch is scheduled for June 17 at 5:40 a.m. EDT. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Viewed across the Indian River Lagoon, space shuttle Endeavour waits for launch after rollback of the rotating service structure, or RSS, at left. First motion of the RSS was at 10:15 a.m. EDT. At far right is the tank that holds 300,000 gallons of water used for sound suppression during liftoff. First motion of the RSS was at 10:15 a.m. EDT. The rollback is in preparation for Endeavour's liftoff on the STS-127 mission with a crew of seven. This is the second launch attempt for Endeavour after the June 13 launch was scrubbed due to a hydrogen leak at the Ground Umbilical Carrier Plate during tanking June 12. The launch will be Endeavour's 23rd flight. The shuttle will carry the Japanese Experiment Module's Exposed Facility, or JEM-EF, and the Experiment Logistics Module-Exposed Section, or ELM-ES, on STS-127. The mission is the final of three flights dedicated to the assembly of the Japan Aerospace Exploration Agency's Kibo laboratory complex on the space station. Endeavour's launch is scheduled for June 17 at 5:40 a.m. EDT. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – After rollback of the rotating service structure, or RSS, on Launch Pad 39A at NASA's Kennedy Space Center in Florida, space shuttle Endeavour is revealed. The shuttle sits on the mobile launcher platform, which straddles the flame trench below. First motion of the RSS was at 10:15 a.m. EDT. The rollback is in preparation for Endeavour's liftoff on the STS-127 mission with a crew of seven. Above the external tank is the "beanie cap," the oxygen vent hood that is designed to vent gaseous oxygen vapors away from the shuttle. This is the second launch attempt for Endeavour after the June 13 launch was scrubbed due to a hydrogen leak at the Ground Umbilical Carrier Plate during tanking June 12. The launch will be Endeavour's 23rd flight. The shuttle will carry the Japanese Experiment Module's Exposed Facility, or JEM-EF, and the Experiment Logistics Module-Exposed Section, or ELM-ES, on STS-127. The mission is the final of three flights dedicated to the assembly of the Japan Aerospace Exploration Agency's Kibo laboratory complex on the space station. Endeavour's launch is scheduled for June 17 at 5:40 a.m. EDT. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Framed by branches across the Indian River Lagoon, space shuttle Endeavour waits for launch after rollback of the rotating service structure, or RSS, at left. First motion of the RSS was at 10:15 a.m. EDT. First motion of the RSS was at 10:15 a.m. EDT. The rollback is in preparation for Endeavour's liftoff on the STS-127 mission with a crew of seven. This is the second launch attempt for Endeavour after the June 13 launch was scrubbed due to a hydrogen leak at the Ground Umbilical Carrier Plate during tanking June 12. The launch will be Endeavour's 23rd flight. The shuttle will carry the Japanese Experiment Module's Exposed Facility, or JEM-EF, and the Experiment Logistics Module-Exposed Section, or ELM-ES, on STS-127. The mission is the final of three flights dedicated to the assembly of the Japan Aerospace Exploration Agency's Kibo laboratory complex on the space station. Endeavour's launch is scheduled for June 17 at 5:40 a.m. EDT. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – After rollback of the rotating service structure, or RSS, on Launch Pad 39A at NASA's Kennedy Space Center in Florida, space shuttle Endeavour is closer to launch. Above the external tank is the "beanie cap," the oxygen vent hood that is designed to vent gaseous oxygen vapors away from the shuttle. At center against Endeavour's cockpit is seen the White Room at the end of the orbiter access arm. The White Room provides the astronauts entry into the shuttle. Endeavour sits on the mobile launcher platform, which straddles the flame trench below. On either side of the engine nozzles are the tail masts, which provide several umbilical connections to the orbiter, including a liquid-oxygen line through one and a liquid-hydrogen line through another. First motion of the RSS was at 10:15 a.m. EDT. The rollback is in preparation for Endeavour's liftoff on the STS-127 mission with a crew of seven. This is the second launch attempt for Endeavour after the June 13 launch was scrubbed due to a hydrogen leak at the Ground Umbilical Carrier Plate during tanking June 12. The launch will be Endeavour's 23rd flight. The shuttle will carry the Japanese Experiment Module's Exposed Facility, or JEM-EF, and the Experiment Logistics Module-Exposed Section, or ELM-ES, on STS-127. The mission is the final of three flights dedicated to the assembly of the Japan Aerospace Exploration Agency's Kibo laboratory complex on the space station. Endeavour's launch is scheduled for June 17 at 5:40 a.m. EDT. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – After rollback of the rotating service structure, or RSS, on Launch Pad 39A at NASA's Kennedy Space Center in Florida, space shuttle Endeavour is closer to launch. Against Endeavour's cockpit is seen the White Room at the end of the orbiter access arm. The White Room provides the astronauts entry into the shuttle. Endeavour sits on the mobile launcher platform, which straddles the flame trench below. On either side of the engine nozzles are the tail masts, which provide several umbilical connections to the orbiter, including a liquid-oxygen line through one and a liquid-hydrogen line through another. First motion of the RSS was at 10:15 a.m. EDT. The rollback is in preparation for Endeavour's liftoff on the STS-127 mission with a crew of seven. This is the second launch attempt for Endeavour after the June 13 launch was scrubbed due to a hydrogen leak at the Ground Umbilical Carrier Plate during tanking June 12. The launch will be Endeavour's 23rd flight. The shuttle will carry the Japanese Experiment Module's Exposed Facility, or JEM-EF, and the Experiment Logistics Module-Exposed Section, or ELM-ES, on STS-127. The mission is the final of three flights dedicated to the assembly of the Japan Aerospace Exploration Agency's Kibo laboratory complex on the space station. Endeavour's launch is scheduled for June 17 at 5:40 a.m. EDT. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – On Launch Pad 39A at NASA's Kennedy Space Center in Florida, technicians in the control booth (lower left) get ready to roll away the rotating service structure, or RSS, above them from space shuttle Endeavour. First motion was at 10:15 a.m. EDT. The rollback is in preparation for Endeavour's liftoff on the STS-127 mission with a crew of seven. This is the second launch attempt for Endeavour after the June 13 launch was scrubbed due to a hydrogen leak at the Ground Umbilical Carrier Plate during tanking June 12. The launch will be Endeavour's 23rd flight. The shuttle will carry the Japanese Experiment Module's Exposed Facility, or JEM-EF, and the Experiment Logistics Module-Exposed Section, or ELM-ES, on STS-127. The mission is the final of three flights dedicated to the assembly of the Japan Aerospace Exploration Agency's Kibo laboratory complex on the space station. Endeavour's launch is scheduled for June 17 at 5:40 a.m. EDT. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – On Launch Pad 39A at NASA's Kennedy Space Center in Florida, the rotating service structure, or RSS, at left is rolled away from space shuttle Endeavour. First motion was at 10:15 a.m. EDT. The rollback is in preparation for Endeavour's liftoff on the STS-127 mission with a crew of seven. This is the second launch attempt for Endeavour after the June 13 launch was scrubbed due to a hydrogen leak at the Ground Umbilical Carrier Plate during tanking June 12. The launch will be Endeavour's 23rd flight. The shuttle will carry the Japanese Experiment Module's Exposed Facility, or JEM-EF, and the Experiment Logistics Module-Exposed Section, or ELM-ES, on STS-127. The mission is the final of three flights dedicated to the assembly of the Japan Aerospace Exploration Agency's Kibo laboratory complex on the space station. Endeavour's launch is scheduled for June 17 at 5:40 a.m. EDT. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – After rollback of the rotating service structure, or RSS, on Launch Pad 39A at NASA's Kennedy Space Center in Florida, space shuttle Endeavour is revealed. The shuttle sits on the mobile launcher platform, which straddles the flame trench below. First motion of the RSS was at 10:15 a.m. EDT. The rollback is in preparation for Endeavour's liftoff on the STS-127 mission with a crew of seven. Above the external tank is the "beanie cap," the oxygen vent hood that is designed to vent gaseous oxygen vapors away from the shuttle. This is the second launch attempt for Endeavour after the June 13 launch was scrubbed due to a hydrogen leak at the Ground Umbilical Carrier Plate during tanking June 12. The launch will be Endeavour's 23rd flight. The shuttle will carry the Japanese Experiment Module's Exposed Facility, or JEM-EF, and the Experiment Logistics Module-Exposed Section, or ELM-ES, on STS-127. The mission is the final of three flights dedicated to the assembly of the Japan Aerospace Exploration Agency's Kibo laboratory complex on the space station. Endeavour's launch is scheduled for June 17 at 5:40 a.m. EDT. Photo credit: NASA/Kim Shiflett