During the six-and-a-half-hour excursion, the astronauts will work on a number of tasks. Chari and Maurer will install hoses on a radiator beam valve module, which routes ammonia through the station’s heat-rejecting radiators. These ensure that space station systems remain at the proper temperature.
Additionally, Chari and Maurer will replace an external camera, install a power and data cable on the Columbus module’s Bartolomeo science platform, and conduct some other upgrades.
Inside the station, NASA astronauts Kayla Barron and Tom Marshburn will operate the Canadarm2 robotics arm to assist the spacewalkers.
It’s the 248th spacewalk in support of assembling, maintaining and upgrading the space station. This will be Chari’s second spacewalk after conducting his first alongside Barron last Tuesday, and the first for Maurer. Maurer will become the 12th ESA astronaut to conduct a spacewalk.
During the spacewalk, Chari will be extravehicular crew member 1 wearing the suit with red stripes, and Maurer will be identifiable as extravehicular crew member 2 in the suit with no stripes.
Maurer’s first space outing will be a busy one as he traverses much of the space station’s exterior, according to the ESA.
“I will go out with my dear colleague Raja. He will do some repairs for the cooling system of the Station, and I will walk around or, I should say, crawl around another part of the Station and do different small activities,” Maurer said in a statement. “I really do have to do a complete tour of the Space Station. It is a motley mix and I’m totally looking forward to it.”
When Maurer installs the power and data cable for Bartolomeo, the first European commercial facility positioned outside of the space station, it will be the final step in connecting the module so that it’s fully operational.
Cooperation with Russian space agency
The crew count will drop back down to seven on March 30 when NASA astronaut Mark Vande Hei returns to Earth with Russian cosmonauts Anton Shkaplerov and Pyotr Dubrov. They will undock from the space station in the Soyuz MS-19 crew ship and land in Kazakhstan about three and a half hours later.
Last week, NASA reaffirmed that it’s still working closely with Russian space agency Rocosmos on the space station, despite mounting geopolitical tensions.
When Vande Hei lands, he will have spent 355 consecutive days in space, breaking the previous spaceflight record set by retired NASA astronaut Scott Kelly.
CNN’s Jackie Wattles contributed to this report.