(02/09/1999) --- Before leaving KSC, STS-93 Commander Eileen M. Collins poses by a T-38 jet trainer aircraft at the Shuttle Landing Facility. She and the rest of the STS-93 crew spent two days visiting mission-related sites, including the Vertical Processing Facility where the Chandra X-ray Observatory is undergoing testing. STS-93 is scheduled to launch July 9 aboard Space Shuttle Columbia and has the primary mission of the deployment of the 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. Collins is the first woman to serve as commander of a Space Shuttle. Other STS-93 crew members are Pilot Jeffrey S. Ashby and Mission Specialists Catherine G. Coleman, Steven A. Hawley, and Michel Tognini of France, who represents the Centre National d'Etudes Spatiales (CNES)