[2] However, it was later decided that Peggy Whitson would stay on board longer, transferring from Expedition 51 to maintain a full crew of six astronauts over the summer, after the arrival of three new members on Soyuz MS-05.

[8][9] Jack Fischer undocked the Cygus OA-7 dubbed "SS John Glenn" from the station on June 4 to make room for the Dragon resupply.

[17] Fischer and Whitson set up a seedling growth botany study[8] to investigate the effects of light and microgravity on Arabidopsis thaliana.

[18] Fisher was also the subject of a Vascular Echo study[19] that examined changes in blood vessels and the heart while in space and their recovery back on Earth.

[36] Fyodor Yurchikhin maintained the life support system on the Russian side of the station by preplacing pumps and hoses and re-pressurizing the cabin.

[37] Jack Fischer replaced a failed water separator inside the Tranquility module that was part of the Common Cabin Air Assembly that controls the stations humidity and temperature.

[39] On July 28, the Soyuz MS-05 launched from Baikonur Cosmodrome in Kazakhstan with Randy Bresnik of NASA, Sergey Ryazanskiy of Roscosmos and Italian Paolo Nespoli of ESA.

[48] Peggy Whitson, Jack Fischer and Fyodor Yurchikhin touched down on September 3 at 1:21 UTC southeast of Dzhezkazgan in Kazakhstan,[49] in their Soyuz MS-04 capsule.