Overview

• The Soyuz MS-27 mission launched from Baikonur Cosmodrome on April 8, 2025, at 1:47 a.m. EDT, with docking at the ISS expected approximately three hours later.
• NASA astronaut Jonny Kim, a former Navy SEAL and Harvard-trained physician, joins Russian cosmonauts Sergey Ryzhikov and Alexey Zubritsky for the mission.
• This mission introduces an extended eight-month crew rotation, an increase from the usual six months, to gather data on the effects of prolonged space habitation.
• The Soyuz spacecraft successfully deployed its solar panels and navigation antennas, with all systems operating nominally during the launch sequence.
• The new crew will replace the current ISS members set to return to Earth on April 19, concluding their 219-day mission.