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Space Shuttle Discovery’s STS-70 mission landed at the Kennedy Space Center on July 22, 1995. Launched on July 13, 1995, STS-70 was the last of seven shuttle missions to carry a Tracking and Data Relay Satellite (TDRS). TDRS was a tool used by NASA and other government agencies to communicate with other satellites, balloons, aircraft, and the ISS. STS-70 deployed TDRS-G about six hours after its launch. During the remainder of the mission, the five crew members completed several experiments, including testing the effect of microgravity on physiological processes in plants, insects, and invertebrates. STS-70 was the first shuttle mission controlled from the new mission control center room at Johnson Space Center and the first flight of the Block 1 orbiter main engine.