America's first female spacewalker from 35 years ago, Kathy Sullivan, was delighted. She said it's good to finally have enough women in the astronaut corps and trained for spacewalking for this to happen.
They also made some get-ahead tasks including the installation of a stanchion on the Columbus module for support of a new external payload platform scheduled for launch to the station in 2020.
U.S. President Donald Trump congratulated the two women in a video call midday on Friday, thanking them for their bravery and service.
Above you'll see a live feed from NASA. During the five-and-a-half-hour spacewalk, the astronauts remained attached to handrails on the exterior of the ISS using harnesses and pairs of metal carabiners. "This is just the first time that there have been two women outside at the same time, and it's really interesting for us".
"For us, it" s just coming out here and doing our job today", Meir said.More news: NetherRealm Shows Mortal Kombat 11 Joker DLC at the Game Awards
At the same time, many expressed hope this will become routine in the future.
The u-turn provoked criticism from many, including Hillary Clinton, who urged NASA to "Make another suit".
NASA acknowledged that the Koch-Meir mission was attracting a lot more interest than is usually the case with spacewalks.
The batteries provide power to the station during the 90-minute night the station and its crew experience 16 times per Earth day.
"Trump was joined for the call by Vice President Mike Pence, NASA Administrator Jim Bridenstine and Ivanka Trump, the president" s daughter and adviser.
"We have followed in their footsteps to get us where we are today", Meir said. "They are an inspiration to people all over the world including me". "We are focused on mission success".
Koch, for one, is not done making history at the ISS. Controllers confirmed during the spacewalk that a spare BCDU installed in place of the faulty unit was working properly.More news: The electric Porsche Taycan Turbo has an EPA range of 201 miles
"Jessica and Christina, we are so proud of you", said Morgan, one of four astronauts inside.
Spacewalking is widely considered the most unsafe assignment in orbit. Italian astronaut Luca Parmitano, who operated the station's robot arm from inside during Friday's spacewalk, nearly drowned in 2013 when his helmet flooded with water from his suit's cooling system. She said gender milestones such as the spacewalk are significant.
It was the fourth spacewalk for Koch, an electrical engineer seven months into an 11-month space mission.
Two American astronauts made history on Friday when they performed a spacewalk outside of the International Space Station-it was the first all-woman extravehicular activity (EVA).
Pairing up for a spacewalk was especially meaningful for Koch and Meir; they're close friends.
The first-ever spacewalk was carried out by Soviet cosmonaut Alexey Leonov in 1965.
Koch and another United States astronaut, Anne McClain, were initially scheduled to make the first all-female spacewalk back in March.More news: Lampard faces 'reality' after another Chelsea defeat
"As much as it's worth celebrating the first spacewalk with an all-female team, I think many of us are looking forward to it just being normal", she said.