STS-54

space shuttle mission

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July 20, 2026

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STS-54 was a mission of the U.S. space shuttle Endeavour that took place from January 13–19, 1993. The crew of STS-54 included John Casper, Donald McMonagle, Mario Runco, Gregory Harbaugh, and Susan Helms. The primary objective of this mission was to deploy the sixth Tracking and Data Relay Satellite (TDRS 6) into orbit. The space shuttle program, developed by NASA, aimed to create a reusable transportation system for carrying people and cargo into low Earth orbit. These missions were crucial for deploying satellites, conducting research, and later, for assembling the International Space Station.12

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Susan Helms
…spaceflights, the first on the STS-54 mission (January 13–19, 1993) of the space shuttle Endeavour, which launched a Tracking and Data Relay Satellite. Her second spaceflight, STS-64 (September 9–20, 1994) on Discovery, carried an experiment that used lasers to measure aerosols in Earth’s
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…spaceflights, the first on the STS-54 mission (January 13–19, 1993) of the space shuttle Endeavour, which launched a Tracking and Data Relay Satellite. Her second spaceflight, STS-64 (September 9–20, 1994) on Discovery, carried an experiment that used lasers to measure aerosols in Earth’s
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