Why is the Crew-11 being evacuated from the ISS?

Crew-11 is being evacuated from the ISS for the first time in history due to a medical emergency experienced by one of the astronauts.

Is the astronaut in immediate danger during the ISS evacuation?

No, the astronaut is stable and not in immediate danger, but the evacuation is proceeding out of an abundance of caution.

When did Crew-11 arrive at the ISS?

Crew-11 arrived at the International Space Station on August 1, 2025.

Home / Science / ISS Crew Evacuated for First Time Due to Medical Emergency

ISS Crew Evacuated for First Time Due to Medical Emergency

10 Jan

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Summary

International Space Station crew evacuated for first time in history.
Astronaut experienced a medical emergency in microgravity.
Crew-11's mission cut short, return date to be finalized soon.

ISS Crew Evacuated for First Time Due to Medical Emergency

For the first time in history, NASA is undertaking an evacuation of the International Space Station (ISS) crew due to a medical emergency. Administrator Jared Isaacman announced that Crew-11 will not complete their scheduled mission, with arrangements for their safe return being finalized within the next 48 hours. This unprecedented decision was made to prioritize the astronauts' well-being after one crew member experienced a medical issue. The astronaut is reportedly stable and receiving care from fellow crewmates, with the condition unrelated to station operations or upcoming spacewalks.

The ISS maintains a built-in evacuation protocol, with crew return vehicles kept on standby for such contingencies. NASA has never before utilized this protocol for medical reasons. The spacewalk initially planned for Thursday was canceled as a precautionary measure. Crew-11, which arrived at the ISS on August 1, 2025, was slated for departure in late February, after the anticipated arrival of Crew-12 around February 15. This early evacuation will not affect the Artemis II mission, scheduled for February 2026.