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STS-93 Mission Specialist Michel Tognini of France, who represents the Centre National d'Etudes Spatiales (CNES), poses in the Space Shuttle Main Engine Facility, which holds the main engine of the orbiter Columbia. He and other crew members Commander Eileen Collins, Mission Specialist Catherine G. Coleman, Pilot Jeffrey S. Ashby, and Mission Specialist Steven A. Hawley are visiting Kennedy to look over the primary payload, the Chandra X-ray Observatory. STS-93 is scheduled to launch July 9 aboard Space Shuttle Columbia. Formerly called the Advanced X-ray Astrophysics Facility, Chandra comprises three major elements: the spacecraft, the science instrument module (SIM), and the world's most powerful X-ray telescope. Chandra will allow scientists from around the world to see previously invisible black holes and high-temperature gas clouds, giving the observatory the potential to rewrite the books on the structure and evolution of our universe