NASA astronaut Zena Cardman speaks on a ham radio with the NixderStelar youth organization

iss073e0511718 (Aug. 20, 2025) --- NASA astronaut and Expedition 73 Flight Engineer Zena Cardman speaks on a ham radio with the NixderStelar youth organization from Lima, Peru. The youngsters asked about using artificial intelligence on the International Space Station, how research in space benefits humans on Earth, and how living in weightlessness affects their bodies. Astronauts frequently speak to students, professionals, and government officials using the ham radio aboard the orbital outpost's Destiny laboratory module.