Spacewalking Russian cosmonauts install experiments on the International Home Station

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The Sundarban The Sundarban two spacesuited cosmonauts work outside a space station during a spacewalk

Russian cosmonauts Sergey Ryzhikov (in the spacesuit with crimson stripes) and Alexey Zubritsky (in blue stripes) work outside the Nauka module in the route of a spacewalk at the International Home Station on Tuesday, Oct. 28, 2025.
(Image credit: NASA)

Two Russian cosmonauts performed their second spacewalk together, installing experiments and performing upkeep on the exterior of the International Home Station.

Expedition 73 commander Sergey Ryzhikov and flight engineer Alexey Zubritsky, every of the federal home corporation Roscosmos, absorb been abet in the vacuum of home on Tuesday (Oct. 28) to continue and lengthen on the work they began in the route of an extravehicular job (EVA) on Oct. 16. For the duration of this most declare day out, they spent 6 hours and 54 minutes mounting, relocating and cleaning hardware on the Nauka multipurpose laboratory module (MLM).

The Sundarban A spacesuited cosmonaut is seen from the perspective of another spacewalker's helmet-mounted camera outside a space station

Expedition 73 commander Sergey Ryzhikov is considered in the route of the Oct. 28, 2025 spacewalk outside the International Home Station from the standpoint of Sergey Ryzhikov’s helmet-mounted digicam. (Image credit: NASA)

There they tackled their first considerable job of the day, attaching a two-section apparatus to toughen a pulse plasma (Impuls) experiment and review into the cease that spacecraft absorb on Earth’s ionosphere (IPI-500, by the NPO IT company in Moscow). The Impuls uncover will take a look at the likely for jet engines to work in home.

Between running connectors and shifting on to the next installation, Ryzhikov also cleaned a window on the Nauka module. Shutters that give protection to the pane when or no longer it is rarely in exercise absorb been opened to permit the cleaning. When done, the shutters absorb been closed once more.

Ryzhikov and Zubritsky then returned to an experiment they installed in the route of the earlier spacewalk two weeks in the past. Ekran-M, or the Molecular Beam Epitaxy experiment, is designed to slay very skinny materials to be used in semiconductors. After discovering a free gasket in the tool’s chamber, Ryzhikov and Zubritsky absorb been advised by mission control to in moderation extract it the exercise of tweezers.

The spacewalkers then inserted a replacement cassette into the Ekran-M and, no topic attending to exercise wire ties to defend it in location, mission control reported getting correct information. The older cassette will almost certainly be returned to Earth for prognosis.

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Ryzhikov and Zubritsky wrapped up their time outside by relocating an exterior control panel for the European Robotic Arm (ERA), a manipulator that is worn to catch admission to and provider various areas of the Russian segment of the home station.

The Sundarban a look at a segment of a space station set against a backdrop of Earth and the blackness of space

Russian cosmonaut Alexey Zubritsky (at left) works outside the Nauka module in the route of a spacewalk at the International Home Station on Tuesday, Oct. 28, 2025. (Image credit: NASA)

Russian EVAs typically set for their excellent job the jettison of no-longer-wished equipment that has been gathered in the route of the cosmonauts’ work. With the pending arrival, on the other hand, of Japan’s sleek robotic cargo car, the HTV-X, on Wednesday morning (Oct. 29), it was once determined to relief a long way flung from any menace from the particles.

The spacewalk ended at 5:12 p.m. EDT (2112 GMT) with Ryzhikov and Zubritsky safely abet inner the Poisk airlock.

Tuesday’s EVA was once the third for Expedition 73 and the 277th in toughen of the International Home Station‘s assembly and upkeep since 1998. It was once Zubritsky’s second spacewalk, bringing his entire time outside to 13 hours and 3 minutes, and the third for Ryzhikov, who now has logged a entire of 19 hours and 51 minutes in the vacuum of home.

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Robert Pearlman is a home historian, journalist and the founder and editor of collectSPACE.com, a day-to-day news publication and community dedicated to home history with a explicit level of interest on how and where home exploration intersects with pop tradition. Pearlman will almost certainly be a contributing creator for Home.com and co-creator of “Space Stations: The Art, Science, and Reality of Working in Space” published by Smithsonian Books in 2018.

In 2009, he was inducted into the U.S. Space Camp Hall of Fame in Huntsville, Alabama. In 2021, he was honored by the American Astronautical Society with the Ordway Award for Sustained Excellence in Spaceflight History. In 2023, the National Space Club Florida Committee recognized Pearlman with the Kolcum News and Communications Award for excellence in telling the space story along the Space Coast and throughout the world.

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