Roscosmos cosmonaut Sergey Ryzhikov poses for a playful portrait in Zvezda service module

iss073e0257845 (July 8, 2025) --- Roscosmos cosmonaut and Expedition 73 Flight Engineer Sergey Ryzhikov poses for a playful portrait in the Zvezda service module seemingly holding its treadmill above his head aboard the International Space Station. Ryzhikov was working on treadmill maintenance inspecting, removing, and replacing components on the exercise device. Credit: Roscosmos