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Factbox-Who is aboard the International Space Station during the air leak?

Published by Global Banking & Finance Review

Posted on June 5, 2026

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· Last updated: June 5, 2026

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Who Are the Astronauts Aboard the International Space Station During Air Leak?

Current Crew Members and Their Roles During the Incident

WASHINGTON, June 5 (Reuters) - NASA ordered five astronauts aboard the International Space Station to take shelter and prepare for possible evacuation for on Friday as a Russian crew tried to fix a leak of air on its portion of the orbital laboratory.

NASA reversed that order roughly two hours later and told the astronauts they could return to the station. Four astronauts on NASA’s SpaceX Crew-12 mission took shelter in the Dragon spacecraft, along with Chris Williams, a NASA astronaut on the space station's Expedition 74 team. They are:

SpaceX Crew-12 Mission Astronauts

JESSICA MEIR, SPACECRAFT COMMANDER

American. Meir is commander of NASA’s Dragon spacecraft for the SpaceX Crew-12 mission. The Caribou, Maine, native was selected as a NASA astronaut in 2013. This is her second flight to space.

JACK HATHAWAY, SPACECRAFT PILOT

American. NASA astronaut Hathaway is the pilot for Dragon. A U.S. Navy commander from South Windsor, Connecticut, this is his first space flight.

SOPHIE ADENOT, MISSION SPECIALIST

French. A European Space Agency astronaut, Adenot was selected as an astronaut in 2022 after having earned an engineering degree in Toulouse, France, and served as a helicopter pilot and design engineer.

ANDREY FEDYAEV, MISSION SPECIALIST

Russian. A Roscosmos cosmonaut, this is his second long-duration stay. He spent 186 days in orbit as an Expedition 69 flight engineer in 2023.

Expedition 74 Crew Members

The members of the Expedition 74 crew, which began December 8 and was due to end this summer are:

CHRIS WILLIAMS, FLIGHT ENGINEER

American. A NASA astronaut and flight engineer for Expedition 74.

SERGEY KUD-SVERCHKOV, COMMANDER

Russian. The Roscosmos cosmonaut is commander of the Expedition 74 crew. 

SERGEI MIKAEV, FLIGHT ENGINEER

Russian. The cosmonaut is a flight engineer for Expedition 74. 

Reporting and Editorial Team

(Reporting by Doina Chiacu; editing by Scott Malone and Nick Zieminski)

Key Takeaways

  • NASA issued a precautionary shelter‑in‑place order for four Crew‑12 members (Meir, Hathaway, Adenot, Fedyaev) plus NASA astronaut Chris Williams during repair of a fresh leak in the Russian segment on June 5, 2026. (apnews.com)
  • The affected module is part of the Russian service segment, which has experienced recurring leaks traced to micro‑cracks—particularly in the PrK module—prompting heightened monitoring. (arstechnica.com)
  • SpaceX Crew‑12 (Meir, Hathaway, Adenot, Fedyaev) arrived at the ISS in February 2026 and joined Expedition 74, which includes Chris Williams, Sergey Kud‑Sverchkov, and Sergei Mikaev. (nasa.gov)

References

Frequently Asked Questions

Who are the astronauts aboard the International Space Station during the air leak?
The astronauts are Jessica Meir, Jack Hathaway, Sophie Adenot, Andrey Fedyaev, Chris Williams, Sergey Kud-Sverchkov, and Sergei Mikaev.
What caused the evacuation alert on the ISS?
NASA ordered evacuation due to a reported air leak in the Russian segment of the ISS, but later reversed the order after two hours.
What roles do the astronauts have on the ISS?
Crew roles include spacecraft commander, pilot, mission specialists, and flight engineers from NASA, Roscosmos, and ESA.
Which spacecraft was used for shelter during the air leak?
Four astronauts took shelter in the SpaceX Dragon spacecraft during the air leak incident.
How long has the Expedition 74 ISS mission been underway?
Expedition 74 began on December 8 and was scheduled to end in summer.

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