A specialized transporter brought the payload canister to Launch Pad 39A in preparation for the STS-131 mission. The canister, which is the same dimensions as the shuttle's cargo bay, held the Leonardo supply module during the move from processing to the shuttle. Leonardo will be packed inside space shuttle Discovery for launch. In this image, the payload canister holding the Leonardo supply module is hoisted to the clean room at Launch pad 39A. Image Credit: NASA/Amanda Diller
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