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CAPE CANAVERAL, Fla. – In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, workers check the mast deployment on the SEDA-AP or Space Environment Data Acquisition equipment--Attached Payload. SEDA-AP will measure space environment in ISS orbit and environmental effects on materials and electronic devices to investigate the interaction with and from the environment at the Kibo exposed facility. The payload will be installed on the Japanese Experiment Module's Experiment Logistics Module-Exposed Section, or ELM-ES. The ELM-ES is one of the final components of the Japan Aerospace Exploration Agency's Kibo laboratory for the International Space Station. It can provide payload storage space and can carry up to three payloads at launch. In addition, the ELM-ES provides a logistics function where it can be returned to the ground aboard the space shuttle. The ELM-ES will be carried aboard space shuttle Endeavour on the STS-127 mission targeted for launch May 15. Photo credit: NASA/Cory Huston