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CAPE CANAVERAL, Fla. –– On Launch Pad 39A at NASA's Kennedy Space Center in Florida, the payload canister is lifted toward the payload changeout room, or PCR, on the rotating service structure. The canister's cargo of Hubble Space Telescope equipment will be deposited in the PCR and later transferred to the payload bay on space shuttle Atlantis, at right. Atlantis' 11-day STS-125 mission to service Hubble is targeted for launch May 12. The flight will include five spacewalks in which astronauts will refurbish and upgrade the telescope with state-of-the-art science instruments. As a result, …
