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1. Astronauts Complete the 200th Spacewalk at the International Space Station (May 2019) Astronauts Christina Koch and Nick Hague completed the 200th spacewalk at the International Space Station (ISS) on May 2019. The spacewalk lasted seven hours and fifty-six minutes, during which Koch and Hague replaced a faulty battery charge/discharge unit and also installed a new set of solar array batteries. This spacewalk marks the first time two women have completed a spacewalk together. 2. NASA Astronauts Complete Historic Spacewalk at the International Space Station (October 2019) In October 2019, NASA astronauts Christina Koch and Jessica Meir became the first all-female team to complete a spacewalk outside the International Space Station. The historic spacewalk lasted seven hours and seventeen minutes and saw the two astronauts replace a failed power controller. This was the first time in history that two women have completed a spacewalk together. 3. NASA Astronaut Christina Koch Sets Record for Longest Single Spaceflight by a Woman (February 2020) In February 2020, NASA astronaut Christina Koch set a new record for the longest single spaceflight by a woman. She had spent 328 days in space
Expedition 73 crewmembers sequenced DNA and worked with virtual reality glasses this week, while also continuing to unpack cargo vehicles and congratulating NASA's 24th group of astronaut candidates.
The Expedition 73 crew continued their science research and maintenance work aboard the International Space Station this week, despite the start of a U.S. government shutdown back on Earth.