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Inside the Vehicle Assembly Building, two STS-93 crew members, (center) Mission Specialist Michel Tognini of France and Pilot Jeffrey S. Ashby, get a close look at something seldom seen, the tip of an external tank. With them are Roland Nedelkovich (far left), with the Vertical Integration Test Team, and John Hlavacka (far right). STS-93 is scheduled to launch July 9 aboard Space Shuttle Columbia and has the primary mission of the deployment of the Chandra X-ray Observatory. 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. Other STS-93 crew members are Commander Eileen M. Collins and Mission Specialists Catherine G. Coleman and Steven A. Hawley