STS-50 (U.S. Microgravity Laboratory 1) was a United States Space Shuttle mission, the 12th mission of the Columbia orbiter.Columbia landed at Kennedy Space Center for the first time ever due to bad weather at Edwards caused by the remnants of Hurricane Darby. Crew Backup crew Mission parameters Mass: Orbiter landing with payload: 103,814 kg Payload: 12,101 kg Perigee: 302 km Apogee: 309 km Inclination: 28.5° Period: 90.6 min Mission highlights The U.S. Microgravity Laboratory 1 wa… (More on Sts-50)