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Cosmonauts Begin Spacewalk for Scientific Hardware Work [1]

['Mark A. Garcia']

Date: 2026-05-27  

Cosmonauts Begin Spacewalk for Scientific Hardware Work

Cosmonaut Sergey Ryzhikov removes a high-resolution camera (HRC) monoblock during a spacewalk on Oct. 16, 2025. The HRC monoblock is part of a scientific optical telescope system designed to test compact radio-optical detectors for Earth observation, ecological monitoring, and emergency response. NASA

Roscosmos cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev exited the International Space Station at 10:18 a.m. EDT, beginning a spacewalk to remove two completed science experiments from the Poisk and Nauka modules and to install a new solar radiation-measuring device on the Zvezda service module.

Live coverage continues on NASA+, Amazon Prime, and the agency’s YouTube channel. Learn how to watch NASA content through a variety of online platforms, including social media.

The spacewalk is planned to last about five hours. Kud-Sverchkov is wearing an Orlan spacesuit with red stripes, and Mikaev is wearing a suit with blue stripes.

Learn more about station activities by following the space station blog, @space_stationon X, as well as the ISS Facebook and ISS Instagram accounts.

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[1] Url: https://www.nasa.gov/blogs/spacestation/2026/05/27/cosmonauts-begin-spacewalk-for-scientific-hardware-work/

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