During the MagISStra mission the ISS will host nine people in total on their long-duration missions. When Paolo Nespoli arrives at the Station with his crew, Expedition 26 is aboard, and when they leave the orbital outpost in May, the crew left aboard will become members of Expedition 28.

The Expeditions are thus divided into two parts, each including two three-person Soyuz crews. The crews are launched with one Soyuz spacecraft and may land in a different one, if it has been longer at the Station and needs to be returned to Earth.

Expedition 25: September – November 2010

Expedition 25 began with the Soyuz TMA-18 undocking in September 2010. Three new crewmembers were launched on Soyuz TMA-01M on 7 October.

Soyuz TMA-19
Crew: Fyodor Yurchikhin, Shannon Walker, Douglas Wheelock (commander)
Launch: 15 June 2010
Docking: 17 June 2010
Landing: 26 November 2010

Soyuz TMA-01M
Crew: Alexander Kaleri, Scott Kelly, Oleg Skripochka
Launch: 7 October 2010
Docking: 9 October 2010
Landing: 16 March 2011

Expedition 26: November 2010 – March 2011

Expedition 26 begins with the Soyuz TMA-19 undocking in November 2010. Three new crewmembers will arrive shortly thereafter on Soyuz TMA-20.

Soyuz TMA-01M
Crew: Alexander Kaleri, Scott Kelly (commander), Oleg Skripochka
Landing: 16 March 2011

Soyuz TMA-20
Crew: Dmitri Kondratyev, Catherine Coleman, Paolo Nespoli
Launch: 15 December 2010
Docking: 17 December 2010
Landing: May 2011

Expedition 26-27: December 2010 – May 2011

Soyuz TMA-20
Crew: Dmitri Kondratyev (commander), Catherine Coleman, Paolo Nespoli
Landing: May 2011

Expedition 27: March – September 2011

Soyuz TMA-21
Crew: Andrei Borisenko, Ronald Garan, Alexander Samokutyayev Launch: 5 April 2010

Expedition 28: May – September 2011

Crew: Sergei Volkov, Mike Fossum, Satoshi Furukawa