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Setting a record for the longest single spaceflight in history by a woman, NASA astronaut Christina Koch, Soyuz Commander Alexander Skvortsov of Roscosmos and Luca Parmitano of ESA (European Space Agency) landed on Earth at 4:12 a.m. EST in Kazakhstan, southeast of the remote town of Dzhezkazgan. The trio departed the International Space Station in their Soyuz MS-13 spacecraft at 12:50 a.m.

For Parmitano and Skvortsov, this landing completed a 201-day stay in space, 3,216 orbits of Earth and a journey of 85.2 million miles.

Koch’s first journey into space became a 328-day mission in which she orbited Earth 5,248 times, a journey of 139 million miles, roughly the equivalent of 291 trips to the Moon and back. She conducted and supported more than 210 investigations during Expeditions 59, 60, and 61, including as a research subject volunteer to provide scientists the opportunity to observe effects of long-duration spaceflight on a woman as the agency plans to return to the Moon under the Artemis program and prepare for human exploration of Mars.

One particular research project in which Koch participated is the Vertebral Strength investigation, which better defines the extent of spaceflight-induced bone and muscle degradation of the spine, and the associated risk for broken vertebrae. This timely endeavor is expected to provide insight into the development of future countermeasures, such as preventative medicine or exercise. These results also could provide recommendations for limiting the amount of force astronauts are subjected to during launch.

Koch lived in space with four fellow NASA astronauts and classmates: Anne McClain, Nick Hague, Andrew Morgan, and Jessica Meir as well as four Russian cosmonauts, Canadian astronaut David Saint-Jacques, ESA astronaut Parmitano, and visiting astronaut Hazzaa Ali Almansoori from the United Arab Emirates (UAE).

Watch Koch’s most memorable moments from her record-breaking mission at: https://go.nasa.gov/36E40MZ

Learn more about space station activities by following @space_station and @ISS_Research on Twitter as well as the ISS Facebook and ISS Instagram accounts.