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Mission or Study ID:   Expedition 66
International Space Station (ISS)
International Space Station
Launch/Start Date:
Landing/End Date:
In progress
Expedition 66 Mission Patch

Expedition 66 began with the undocking of the Soyuz MS-18 from the International Space Station (ISS) on October 17, 2021, returning Oleg Novitskiy (RSA) and two spaceflight participants Earth.

Remaining on the station under the command of Thomas Pasquet (ESA) are Shane Kimbrough (NASA), Megan McArthur (NASA), Akihiko Hoshide (JAXA), Mark Vande Hei (NASA), Pyotr Dubrov (RSA), and Anton Shkaplerov (RSA).

The third operational mission utilizing the SpaceX Crew Dragon, Crew-3, is expected to launch on October 30. With the arrival of the Crew-3 crew including NASA astronauts Raja Chari, Tom Marshburn, and Kayla Barron, and ESA astronaut Matthias Maurer, the Expedition 66 crew will be complete.

Pesquet is expected to turn command of the station over to Shkaplerov in early to mid-November, shortly before Crew-2 (Pasquet, Kimbrough, McArthur, and Hoshide) undocks to return home.

While operating and maintaining the space station's systems, the Expedition 66 crew will continue to operate the many science experiments in progress as well as initiate new investigations and undertake technology demonstrations.

Visiting spacecraft will include multiple resupply vehicles and the first private mission to the ISS. The AX-1 mission by Axiom Space is planned to have a crew of four private astronauts who will spend eight days living and working on the station. AX-1 is expected to launch in February, 2022.

Expedition 66 will end in late March, 2022.

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Experiments on this Mission