Roscosmos Cosmonauts Set For Critical Spacewalk At International Space Station

Two Roscosmos cosmonauts are getting ready for an important extravehicular activity on the International Space Station. Set for Wednesday, May 27, the walk‑outside will support both research objectives and the station’s ongoing upkeep.

Live Stream Details and Schedule

NASA will air the EVA live at 9:45 a.m. EDT on NASA+, Amazon Prime and the agency’s YouTube channel. The spacewalk itself is slated to commence around 10:15 a.m. EDT and is expected to run for about five hours. Viewers can also follow the event through NASA’s various online platforms and social‑media feeds, allowing a worldwide audience to watch the operation in real time.

Two cosmonauts will exit the space station for a spacewalk at 10:15am ET on Wednesday, May 27, live on @NASA+. The duo will install a solar radiation experiment and remove other scientific hardware. https://t.co/wgUTCv4LMf

— International Space Station (@Space_Station) May 22, 2026

Mission Goals and Planned Tasks

The primary objective is to mount a solar radiation experiment on the Zvezda service module, giving scientists a new tool to track solar activity and its effects on hardware and crew members, data that will be useful for missions beyond low‑Earth orbit. The crew will also detach additional scientific payloads from the Poisk and Nauka modules, helping keep the station’s research infrastructure in peak condition. Should the timeline permit, they will capture images of the Progress 94 cargo vehicle’s Kurs rendezvous antennas, which failed to deploy after the March launch.

Crew Members and EVA Gear

Expedition 74 commander Sergey Kud‑Sverchkov and flight engineer Sergei Mikaev will conduct the walk‑outside, marking Kud‑Sverchkov’s second EVA and Mikaev’s debut. In the usual color‑coding system, Kud‑Sverchkov’s suit features red stripes, while Mikaev’s is marked with blue stripes, simplifying visual identification during the operation. This will be the 279th EVA performed on the ISS, reflecting the extensive legacy of assembly, repair and upgrades that sustain humanity’s orbital outpost.

Expedition 74 worked new cancer and blood‑clotting research on Wednesday while unpacking @SpaceX Dragon cargo and prepping for an upcoming spacewalk. More… https://t.co/tB0z4NCX7bpic.twitter.com/KfwY4Me5sj

— International Space Station (@Space_Station) May 20, 2026

Scientific and Operational Significance

Extravehicular activities like this one are essential for advancing research and maintaining the safety of the station. Installing radiation‑monitoring equipment and managing legacy hardware keeps the platform functional and provides critical data for planning deeper‑space missions. Every task performed in microgravity demands meticulous preparation and training, as crew members work in a vacuum while tethered to the station. These missions illustrate the delicate interplay between exploration and preservation that defines human spaceflight.