The second spacewalk in history was conducted by a team of all-women astronauts at the International Space Station on Wednesday morning.

NASA astronauts Jessica Meir and Christina Koch replaced batteries on solar arrays on the outside of the International Space Station during the first spacewalk of 2020.

The same astronauts made history after completing the very first all-female spacewalk in October. That came months after a planned spacewalk with an all-women crew had to be cancelled in March because of lack of suitable spacesuits.

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These will be the second and third spacewalks for Meir and the fifth and sixth for Koch. NASA said Wednesday’s spacewalk is the 225th conducted at the International Space Station.