On October 25, 2023, Russian cosmonauts Oleg Kononenko and Nikolai Chub performed the extra vehicle activities (EVA – spacewalk) to install a radar on the “Nauka” module. In addition, the cosmonauts had to conduct inspections and photograph leak sites at an additional radiant heat exchanger in the “Nauka” module. The EVA lasted 7 hours and 41 minutes. It was the 6^th EVA for Oleg Kononenko and the 1^st EVA for Nikolai Chub.