By Cheyenne Macdonald For Dailymail.com
Published: 16:31 GMT, 6 March 2019 | Updated: 16:31 GMT, 6 March 2019
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On March 29, in the last minutes of twilight before the sun rises over the United States, two NASA astronauts will embark on a history-making excursion outside the International Space Station.
If all goes as scheduled, Expedition 59 astronauts Anne McClain and Christina Koch will lead a roughly seven-hour spacewalk to attend tasks on the orbiting lab’s exterior, starting at 6:30 a.m. (ET).
It’s a routine outing, and the first of three planned for this particular series, but this one is special for reasons beyond the mission itself – it’s the first ever all-female spacewalk.
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If all goes as scheduled, Expedition 59 astronauts Anne McClain (left) and Christina Koch (right) will lead a roughly seven-hour spacewalk to attend tasks on the orbiting lab’s exterior, starting at 6:30 a.m. (ET). McClain is already on the ISS as part of Expedition 58
Cosmonaut Valentina Tereshkova became the first woman in space in 1963 – just two years after the first man.
In 1983, Sally Ride became the first American woman to go to space during her historic flight on the space shuttle Challenger.
The following year, cosmonaut Svetlana Savitskaya walked in space for another historic first,
