NASA reported on Sept. 14, 2026, that Expedition 75 crew members aboard the International Space Station focused on lead-free soldering, science hardware and human research that Monday. NASA flight engineer Anil Menon worked on the MIYOKA lead-free soldering experiment inside the Harmony module, setting up safety gear to contain fumes, installing internal hardware and testing power connections. He then soldered components on a circuit board to demonstrate electronics manufacturing and repair in microgravity, NASA said. The space-soldered samples are to be returned to Earth and compared with identical ground-soldered samples.

Menon also joined Roscosmos flight engineers Pyotr Dubrov and Anna Kikina for computerized hearing tests in the Quest airlock, checking for hearing changes in the station environment. Sophie Adenot of ESA set up the Kubik research incubator and centrifuge in the Columbus laboratory module, refilled Human Research Facility supply kits and exercised on the European Enhanced Exploration Exercise Device, according to the agency.

NASA astronauts Jessica Meir and Jack Hathaway concentrated on lab hardware and life support maintenance. Dubrov and Kikina took turns using virtual reality goggles for the Virtual experiment, which tests how balance and direction adapt to microgravity, while Andrey Fedyaev tested a lower body negative pressure suit and activated automated Earth-imaging gear.