Radiation and life support
Beyond Earth's magnetic field, cosmic rays and solar storms expose crews to radiation, and food, air and water must be recycled for years.
Open in the interactive tree →On the way to Mars the Curiosity rover's detector measured about 1.8 millisievert per day, so a round trip with 180-day legs already adds up to about 0.66 sievert. A full Mars mission of around three years could exceed 1,000 mSv, above NASA's 600 mSv career limit (set to keep added cancer-death risk under 3%). Heavy cosmic-ray ions are hard to shield without large mass, and effects on brain, heart and fertility are poorly known.
As of October 2026
No flight-proven lightweight shielding exists; proposals (hydrogen-rich materials, magnetic shields, drugs) remain theoretical. The ISS recycles most of its crew water but still needs regular resupply of food and spare parts. Artemis II (April 2026) was the first crewed flight beyond the protection of low Earth orbit since 1972, but lasted only about nine days.
What is missing
- Lightweight shielding against galactic cosmic rays
- Reliable data on the long-term health effects of deep-space radiation
- Fully closed air, water and food loops that work without resupply
- Countermeasures for bone and muscle loss over years
- Accurate forecasting of solar storms
Becomes possible once solved
- Crewed missions to Mars and beyond
- Long-term stays on the Moon
- Safer long-duration flights for crews
- Closed-loop life support useful for remote and harsh places on Earth
Open steps
- Light shielding against cosmic rays Medium AI leverageFind materials and layouts that cut galactic cosmic-ray dose per kilogram, including hydrogen-rich materials and magnetic or plasma shields.
- Solar storm forecasting High AI leverageForecast flares and particle storms hours to days ahead precisely enough for crews to shelter and missions to schedule.
- Long-term radiation health risk Medium AI leverageEstimate cancer, heart and brain risks from years of heavy-ion exposure, for which there are no human data.
- Closed air, water and food loops Medium AI leverageRun air, water and plant-growth loops for years with almost no resupply, and detect faults before they cascade.
- Bone and muscle loss countermeasures Low AI leverageFind exercise, drug or gravity-based countermeasures that keep bone and muscle on multi-year trips.
Where AI could help
Low AI leverage. Shielding mass, long-term health data and closed-loop hardware must be built and flown; AI helps forecasting, materials screening and monitoring.
- Forecast solar flares and storms hours ahead so crews can shelter and flights can be timed
- Screen and optimise shielding materials and layouts with surrogate models of particle transport
- Detect faults and drift in air, water and plant-growth loops from telemetry before they spread
- Mine astronaut and animal data for radiation-risk models and countermeasures
Shown so far
- In August 2025, NASA and IBM released Surya, an open foundation model trained on nine years of Solar Dynamics Observatory data, with preliminary solar-flare forecasting gains of 16% over benchmarks. source
- In September 2024, researchers applied unsupervised anomaly detection to telemetry from the EDEN ISS Antarctic greenhouse, a testbed for bio-regenerative life support. source
- In June 2026, EmTDLab said, according to the company, that its Symade AI platform screened alloy compositions to find a radiation-shielding material, with no test results yet and a balloon flight planned. source
Prerequisites
Unlocks
- Permanent Moon Base2030s?
- Permanent Mars base2040s?