ISS commander Sergey Kud-Sverchkov was conducting scheduled maintenance on the station hull when his remarks were caught in transmission Russian cosmonaut Sergey Kud-Sverchkov, on his first spacewalk of 2026 on the International Space Station (ISS), sent a message to his mother. Current ISS commander Kud-Sverchkov and his fellow cosmonaut Sergey Mikayev were performing scheduled installation and removal of scientific experiment hardware on the outer hull of the space station on Wednesday. A stream of the spacewalk, broadcast by Russian space corporation Roscosmos, shows Kud-Sverchkov holding up a laminated piece of paper with the words “Mom, I’m wearing my hat” printed in Russian. Over the course of more than six hours, the cosmonauts installed new hardware to observe the Sun in the previously unexplored terahertz range of the electromagnetic spectrum, and retrieved a slide from an experiment attempting to grow ultra-pure semiconductors in space.…