Discovery Arrives at Launch Pad 39A

May 5, 2008

Space shuttle Discovery made the long, slow trek out to Launch Pad 39A at NASA's Kennedy Space Center. The 3.4-mile trek is one of the last major milestones leading up to the launch of Discovery on the STS-124 mission. Launch is targeted for May 31.

Access platforms at Launch Pad 39A are moved into position against Space Shuttle Discovery. Discovery arrived at its seaside launch pad and was hard down at 6:06 a.m. EDT on May 3.

Carried by the slow-moving crawler-transporter, the shuttle assembly and mobile launcher platform began rolling out of the Vehicle Assembly Building at 11:47 p.m. EDT Friday night and was secured at the pad at 6:06 a.m. on Saturday.

The canister carrying the STS-124 payloads arrived at the launch pad April 29. Primary payloads are the tour-bus-sized Japanese Experiment Module-Pressurized Module and the lab's robotic arm system. The components will soon be installed in the orbiter's payload bay.

The STS-124 crew members, commanded by astronaut Mark Kelly, are set to arrive at Kennedy on May 6 for the Terminal Countdown Demonstration Test. The three-day event concludes May 9 with a full dress rehearsal of the launch countdown.

From the left are astronauts Gregory E. Chamitoff, Michael E. Fossum, both STS-124 mission specialists; Kenneth T. Ham, pilot; Mark E. Kelly, commander; Karen L. Nyberg, Ronald J. Garan and Japan Aerospace Exploration Agency's (JAXA) Akihiko Hoshide, all mission specialists.

Navy Cmdr. Mark E. Kelly will command the STS-124 shuttle mission to deliver the Pressurized Module and robotic arm of the Japanese Experiment Module, known as "Kibo" (hope), to the International Space Station. Navy Cmdr. Kenneth T. Ham will serve as the pilot. Mission specialists will include NASA astronauts Karen L. Nyberg; Air Force Col. Ronald J. Garan Jr.; and Air Force Reserve Col. Michael E. Fossum. Japan Aerospace Exploration Agency (JAXA) astronaut Akihiko Hoshide also will serve as a mission specialist.

Navy Cmdr. Stephen G. Bowen was previously named to the STS-124 crew but has been reassigned to STS-126. The change allows room for the STS-124 mission to rotate a space station resident.

Astronaut Gregory E. Chamitoff is scheduled to fly to the station as a mission specialist on STS-124. He will take Astronaut Garrett E. Reisman's place as an Expedition 17 flight engineer and return to Earth on shuttle mission STS-126.

The STS-124 mission is the second of three flights that will launch components to complete the Kibo laboratory. The mission will include two spacewalks to install the new lab and its remote manipulator system. The lab's logistics module, which will have been installed in a temporary location during STS-123, will be attached to the new lab.