The STS-75 crew with Commander: Andrew M. Allen, Pilot: Scott J. Horowitz, Mission Specialist 1: Jeffrey A. Hoffman, Mission Specialist 2: Maurizio Cheli - ESA Italy, Mission Specialist 3: Claude Nicollier - ESA Switzerland, Mission Specialist 4 and Payload Commander: Franklin R. Chang-Diaz and Payload Specialist: Umberto Guidoni - Italy