STS-93 Mission Commander Eileen M. Collins listens to Mission Specialist Steven A. Hawley during the Crew Equipment Interface Test.

In the Orbiter Processing Facility Bay 3, aboard the orbiter Columbia, STS-93 Mission Commander Eileen M. Collins listens to Mission Specialist Steven A. Hawley during the Crew Equipment Interface Test (CEIT). Collins is the first woman to serve as a mission commander on a shuttle flight. The CEIT provides an opportunity for crew members to check equipment and facilities that will be aboard the orbiter during their mission. The rest of the crew members are Pilot Jeffrey S. Ashby, Mission Specialist Catherine G. Coleman, and Mission Specialist Michel Tognini of France. The STS-93 mission will deploy the Advanced X-ray Astrophysics Facility (AXAF), which comprises three major elements: the spacecraft, the telescope, and the science instrument module (SIM). AXAF will allow scientists from around the world to obtain unprecedented X-ray images of a variety of high-energy objects to help understand the structure and evolution of the universe. Targeted date for the launch of STS-93 is March 18, 1999