Space Shuttle Columbia that remained fitted to the avionics suite, and an internal airlock that, originally fitted into the other orbiters, was later removed in favor of an external airlock to facilitate Shuttle/Mir and Shuttle/International Space Station dockings. Due to its weight, "Columbia" could not have used the planned Centaur-G booster (cancelled after the loss of "Challenger"). The retention of the internal airlock allowed NASA to use "Columbia" for the STS-109 Hubble Space Telescope servicing mission, along with the Spacehab double module used on STS-107. Due to "Columbia's" heavier weight, it was less ideal for NASA to use it for missions to the
Space Shuttle Endeavour several ceremonies in Washington, D.C., including a White House ceremony where then-President George H. W. Bush presented awards to each school. "Endeavour" was delivered by Rockwell International Space Transportation Systems Division in May 1991 and first launched a year later, in May 1992, on STS-49. Rockwell International claimed that it had made no profit on Space Shuttle "Endeavour", despite construction costing US$2.2 billion. On its first mission, it captured and redeployed the stranded "INTELSAT VI" communications satellite. The first African-American woman astronaut, Mae Jemison, was launched into space on the mission STS-47 on September 12, 1992. "Endeavour" flew the first