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CAPE CANAVERAL, Fla. – On Launch Pad 39A at NASA's Kennedy Space Center in Florida, the payload ground-handling mechanism, known as the PGHM, is retracted after installing the payloads in space shuttle Atlantis' payload bay, at right, for the STS-125 mission. The payload includes the Flight Support System, or FSS, carrier with the Soft Capture Mechanism; the Multi-Use Lightweight Equipment, or MULE, carrier with the Science Instrument Command and Data Handling Unit, or SIC&DH; the Orbital Replacement Unit Carrier, or ORUC, with the Cosmic Origins Spectrograph, or COS, and an IMAX 3D camera. A…
