Peggy Whitson, the world's oldest and most experienced spacewoman, just spacewalked into history.
The 57-year-old American astronaut completed a record-breaking eighth stint outside the International Space Station, 400 kilometers above Earth.
During her March 30 spacewalk, she and station commander Shane Kimbrough completed preparations for a new docking port at the station. The port will serve as a “parking spot” for future missions, with crews transported by companies Boeing and SpaceX.
Altogether, she's spent more than 500 days off the planet, more than any other woman.
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