NASA was set to make history today with the world’s very first all-female spacewalk arranged for Friday, March 29.

Astronauts Anne McClain and Christina Hammock Koch was because of carry out a spacewalk to change some old batteries on the International Spaceport Station (ISS).

Spacewalks, officially called extravehicular activities or EVAs, are regular yet dangerous operations. Throughout a spacewalk, a set of astronauts placed on large spacesuits, action outside the ISS, and interact in the unforgiving vacuum of area.

Learn More: Every spacesuit NASA astronauts have actually used– and the brand-new designs that might reinvent how they check out the planetary system

McClain and Koch was because of be supported by 2 females in Objective Control, too– lead flight director Mary Lawrence and spacewalk flight controller Jackie Kagey.

There have actually been more than 210 spacewalks over the spaceport station’s 18- year history, and 2 female team members have actually lived aboard the ISS a number of times previously. However this was because of be the very first all-female, women-led spacewalk operation ever performed. Plus, this one occurred to be arranged throughout Females’s History Month

The NASA International Spaceport Station.

Nevertheless, all that has actually come reversed since of a closet concern.

NASA stated in a declaration on Monday that objective supervisors had actually chosen to change McClain with male astronaut Nick Hague, “due in part to spacesuit schedule on the station.”

The company stated that a “medium-size difficult upper torso – basically the t-shirt of the spacesuit” fitted McClain finest, nevertheless, because there was just one offered to use this Friday, Koch would use it.

“McClain now is tentatively arranged to perform her next spacewalk – the 3rd in this series – on Monday, April 8 with Canadian Area Company astronaut David Saint-Jacques,” NASA stated.

At this time, NASA has actually not yet prepared another all-female spacewalk.

Spacesuit fittings are challenging since microgravity leads to astronauts getting taller in area– McClain tweeted this month that she was 2 inches taller in area than when she introduced.

The company likewise did not purposefully prepare the spacewalk to be all-female in the very first location.

“It was not managed to be in this manner,” Stephanie Schierholz, a NASA agent, stated in a declaration to Organisation Expert, keeping in mind that this specific spacewalk was initially slated to happen in the fall of2018


All-women coincidences like this will likely increase moving forward, provided the future structure of NASA’s brand-new batches of astronauts and its human spaceflight department.

“All 3 NASA astronauts who will be on the spaceport station are from the 2013 astronaut class that was 50% females. And the most current class of flight directors was 50% females,” Schierholz stated.

Click on this link to learn more about why the ISS required a battery swap in the very first location.