NASA warns of a stubborn air leak in the ISS's Russian Zvezda module, detected since 2019 and now ticking up to 3.7 pounds per day this year. Despite NASA labeling it the top safety risk, Roscosmos shrugs, blaming micro-vibrations. Recent fixes have halved the leak, but tensions remain as the aging space station edges toward its 2030 sunset. Meanwhile, NASA eyes the Moon and Mars, juggling repairs and interstellar diplomacy in zero gravity.