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Home Commander Peggy Whitson works on the OsteoOmics bone cell study that uses the Microgravity Science Glovebox inside the U.S. Destiny laboratory in May 2017. OsteoOmics investigates the molecular mechanisms that dictate bone loss in microgravity by examining osteoblasts, which form bone, and osteoclasts, which dissolve bone. (NASA) Commander Peggy Whitson works on the OsteoOmics bone cell study that uses the Microgravity Science Glovebox inside the U.S. Destiny laboratory in May 2017. OsteoOmics investigates the molecular mechanisms that dictate bone loss in microgravity by examining osteoblasts, which form bone, and osteoclasts, which dissolve bone. (NASA)

Commander Peggy Whitson works on the OsteoOmics bone cell study that uses the Microgravity Science Glovebox inside the U.S. Destiny laboratory in May 2017. OsteoOmics investigates the molecular mechanisms that dictate bone loss in microgravity by examining osteoblasts, which form bone, and osteoclasts, which dissolve bone. (NASA)

Commander Peggy Whitson works on the OsteoOmics bone cell study that uses the Microgravity Science Glovebox inside the U.S. Destiny laboratory in May 2017. OsteoOmics investigates the molecular mechanisms that dictate bone loss in microgravity by examining osteoblasts, which form bone, and osteoclasts, which dissolve bone. (NASA)

Commander Peggy Whitson works on the OsteoOmics bone cell study that uses the Microgravity Science Glovebox inside the U.S. Destiny laboratory in May 2017. OsteoOmics investigates the molecular mechanisms that dictate bone loss in microgravity by examining osteoblasts, which form bone, and osteoclasts, which dissolve bone. (NASA)

The Northrop Grumman Antares rocket, with a Cygnus resupply spacecraft onboard, launches from NASA’s Wallops Flight Facility, Saturday, November 2, 2019, in Virginia. (NASA)
NASA astronaut Tim Kopra commanded the International Space Station’s Canadarm2 robotic arm to release the Cygnus spacecraft on June 14, 2016. After Cygnus was a safe distance away, ground controllers at Glenn Research Center in Cleveland, Ohio initiated the sequence for Saffire-1, the first in a series of fire experiments. Saffire-IV will launch on NG-13. (NASA)