Two cosmonauts will go on a spacewalk about 10:20 a.m. EDT on Thursday to replace science and communications hardware on the International Space Station's Zvezda and Poisk modules. Commander Sergey Prokopyev and Flight Engineer Dmitri Petelin will spend about seven hours in the vacuum of space with NASA TV covering the spacewalk live at 9:45 a.m. on the agency’s app and website. This will be the cosmonauts’ fifth spacewalk together and the ninth spacewalk of 2023. Pic 1) Roscosmos cosmonaut Sergey Prokopyev works outside the International Space Station to install an experiment airlock on the Nauka science module during a spacewalk on May 3, 2023. Pic 2) Roscosmos cosmonaut Dmitri Petelin works outside the station to install an experiment airlock on Nauka during a spacewalk on May 3, 2023. #roscosmos #spacewalk #walk #spacesuit #suit #international #space #station #zvezda #poisk #science #communication #hardware