NASA and Red Hat are developing and testing the Crew Medical Officer Digital Assistant (CMO-DA), an AI-powered medical aid designed to help astronauts diagnose symptoms and make health decisions autonomously during space missions with limited or delayed communication to Earth. The system operates entirely offline, addressing scenarios where real-time contact with ground-based doctors is impossible, such as lunar or Martian expeditions.
Currently, the CMO-DA is undergoing trials at Johnson Space Center. While space station crews can normally consult Earth doctors almost instantly, communication delays to the Moon and especially Mars-ranging from four to 24 minutes one-way for Mars-make onboard medical decision-support essential rather than optional.
The assistant runs on Red Hat’s RamaLama platform, which deploys AI models in containerized environments. NASA emphasizes local data processing to allow the system to analyze symptom descriptions and medical images without relying on cloud infrastructure. This is critical for crewmembers, as intermittent or slow connections render remote diagnostics unreliable during high-stakes medical situations.
Testing takes place on Earth using hardware that simulates the Spaceborne Computer’s orbit-adapted environment aboard the ISS. This Hewlett Packard Enterprise (HPE) equipment mimics the computational constraints and power limits astronauts face, ensuring the AI behaves as expected under realistic conditions rather than ideal lab settings.
NASA stresses the importance of open-source software for space medical technology, highlighting the need for transparency, reproducibility, and predictable updates. The next phase involves integrating CMO-DA with Red Hat’s RHEL AI platform, which supports containerized AI applications running in isolated environments. Once ground testing wraps up, NASA will decide on deploying the assistant officially aboard the ISS.
Beyond spaceflight, NASA sees applications for the assistant on Earth in remote areas, polar stations, ships, and military outposts where internet connectivity is sparse. The demand for offline diagnostic tools will be tested in upcoming lunar missions like Artemis III, slated for no earlier than 2027. As missions venture farther, from the Moon to Mars, crews will need significantly greater medical independence-making systems like CMO-DA vital infrastructure for long-duration space travel.