The delicate choreography of returning astronauts from the International Space Station
In short: Leaving the International Space Station is not a simple exit. It requires precise timing, favorable weather, and a formal transfer of command. From the Soyuz descent of Scott Kelly to the upcoming SpaceX Dragon return of the Crew-12 mission, every departure is a high-stakes operation.
Space station departures are complex operations that depend on a multitude of variables. For the Crew-12 mission, NASA and SpaceX have targeted an undocking time of no earlier than 1:05 a.m. EDT on Wednesday, October 7. This specific timing is contingent upon spacecraft readiness, recovery team preparedness, and environmental factors such as weather and sea states off the California coast. If all conditions remain favorable, the crew—consisting of NASA astronauts Jessica Meir and Jack Hathaway, ESA astronaut Sophie Adenot, and Roscosmos cosmonaut Andrey Fedyaev—is expected to splash down around 11:25 a.m. on Thursday, October 8. Mission managers will monitor the recovery area throughout the process. They will select the final splashdown location and time closer to the actual undocking. The next weather assessment is scheduled for approximately 48 hours before the departure.
Before the physical departure, a critical administrative transition occurs. On Sunday, October 4, the departing crew members must officially transfer their mission responsibilities to their successors. This includes a formal change-of-command and farewell ceremony. During this event, Jessica Meir is scheduled to hand over command of the station to Roscosmos cosmonaut Pyotr Dubrov at 10:20 a.m. EDT.
These transitions reflect the long-standing rhythm of life aboard the ISS. For example, in March 2016, Expedition 46 Commander Scott Kelly of NASA, alongside Roscosmos cosmonauts Sergey Volkov and Mikhail Kornienko, undocked their Soyuz spacecraft on March 1 to begin their journey home. Whether using the Soyuz or the SpaceX Dragon, the process ensures the station remains continuously inhabited and managed through seamless handovers.
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Sources
- Summary by Intellect · source: One-Year Crew Departs Space Station
- Also: NASA, SpaceX Set No Earlier Than Oct. 7 for Crew-12 Departure - NASA
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