// SPACE.COM — SPAZIO & SCIENZA
Astronauts on International Space Station take shelter in SpaceX Dragon as cosmonauts try to fix air leak
"Out of an abundance of caution, NASA has directed all four of the agency's SpaceX Crew-12 members and NASA astronaut Chris Williams to assume an elevated safety posture in the Dragon spacecraft while the repair is underway."
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NASA ordered five astronauts on the International Space Station to take shelter in an attached SpaceX Dragon spacecraft today while Russian cosmonauts tried to fix a concerning air leak on the orbiting lab.
"Out of an abundance of caution, NASA has directed all four of the agency's SpaceX Crew-12 members and NASA astronaut Chris Williams to assume an elevated safety posture in the Dragon spacecraft while the repair is underway," NASA spokesperson Bethany Stevens said via X this morning.
The persistent leak, Stevens explained, is in the PrK transfer tunnel, which leads to Russia's Zvezda service module, one of the oldest parts of the station. This leak, apparently caused by small cracks in the tunnel, has been an issue for years, and Russia's space agency, Roscosmos, manages it "through operational mitigation measures and periodic partial-repair efforts," Stevens wrote.
Those efforts were working until a few months ago, when the leak sprung up again. That development spurred today's action, which Stevens termed a "more extensive repair operation."
The four astronauts of SpaceX's Crew-12 mission are NASA's Jessica Meir and Jack Hathaway, Sophie Adenot of the European Space Agency and cosmonaut Andrey Fedyaev. They arrived at the International Space Station (ISS) in mid-February for a six-month stay.
They took shelter today in Crew-12's Dragon capsule "Freedom," along with NASA's Williams, who arrived at the station in late November aboard a Russian Soyuz spacecraft.
Williams flew with two crewmates on that Soyuz — cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev. They're presumably the ones who attempted the PrK leak fix today. (Stevens' X post did not mention who performed the repair or what exactly the operation entailed.)
"Roscosmos has paused Friday’s structural repair efforts inside the Zvezda service module transfer tunnel, known as PrK, as more measurements and data is assessed," Stevens wrote via X at 10:57 a.m. EDT (1457 GMT) today, just an hour after her original post about the shelter order.