NASA and Google Cloud have developed a proof-of-concept artificial-intelligence system designed to help astronauts diagnose and treat medical issues when real-time contact with Earth is limited. The "Crew Medical Officer Digital Assistant" (CMO-DA) couples natural-language processing with spaceflight medical literature to generate treatment recommendations and monitor crew health during extended missions to the Moon, Mars and beyond. Early trials assessed the tool against the Objective Structured Clinical Examination framework, a widely used measure of clinical competence. Initial results delivered reliable diagnostic suggestions across a broad set of simulated scenarios, according to the organisations. The partners are now refining the model with practicing physicians before integrating it into future Artemis mission planning. Although built for space, NASA and Google Cloud say the technology could be adapted to support remote or underserved communities on Earth, offering real-time clinical guidance where specialist care is scarce.