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| Moon–Mars Radiation Measurement | |
|---|---|
| Name | Moon–Mars Radiation Measurement |
| Mission type | Radiation measurement |
Moon–Mars Radiation Measurement Moon–Mars Radiation Measurement is a coordinated scientific effort to quantify ionizing radiation on the Moon, Mars, and in translunar/transmartian space to support exploration, science, and crewed missions. The initiative integrates instruments, missions, models, and operational planning across agencies such as NASA, European Space Agency, and Roscosmos while interfacing with programs like Artemis program, Mars Exploration Program, and International Space Station operations. Data support research communities at institutions including Jet Propulsion Laboratory, Los Alamos National Laboratory, and European Organisation for Nuclear Research.
Measurement objectives derive from requirements in documents from NASA, European Space Agency, Japan Aerospace Exploration Agency, and advisory bodies such as the National Academies of Sciences, Engineering, and Medicine and International Commission on Radiological Protection. Goals include characterizing galactic cosmic rays monitored since Voyager program and Pioneer program, quantifying solar particle events referenced in analyses of the Carrington event and Halloween solar storms, and validating transport models used by teams at Los Alamos National Laboratory, NASA Johnson Space Center, and Lawrence Livermore National Laboratory. International collaborations often involve agencies like Canadian Space Agency and research centers such as Max Planck Society and CNES.
Sensors include tissue-equivalent proportional counters developed in laboratories such as Brookhaven National Laboratory and solid-state detectors inherited from missions like Mars Science Laboratory and Lunar Reconnaissance Orbiter. Common instruments comprise silicon diode arrays used by Curiosity (rover)'s Radiation Assessment Detector, scintillators similar to those on Hubble Space Telescope instruments, and neutron spectrometers derived from designs on Lunar Prospector. Methodologies combine dosimetry protocols from International Atomic Energy Agency standards, calibration facilities at National Institute of Standards and Technology, and particle transport tested at accelerators such as CERN and TRIUMF. Ground truth comparisons utilize sample-return platforms like Apollo program and prototype habitats tested by NASA Johnson Space Center analogs.
Key missions include instruments on Lunar Reconnaissance Orbiter, detectors on Mars Science Laboratory, experiments aboard International Space Station, and payloads on Artemis program missions. Historical campaigns trace from measurements by Apollo program astronauts through long-term records from Pioneer program, Voyager program, and robotic explorers like Viking program and Pathfinder (spacecraft). Recent and planned efforts involve payloads on Orion (spacecraft), Perseverance (rover), landers in the ExoMars series, and contributions from private entities such as SpaceX launching instrumentation on commercial cyclers. Collaborative campaigns include coordinated observations with heliophysics platforms like Solar and Heliospheric Observatory and Parker Solar Probe.
Radiation fields comprise steady galactic cosmic rays characterized by modulation linked to the 11-year solar cycle, episodic solar energetic particle events associated with Coronal Mass Ejections and Solar flares, and secondary neutrons produced by interactions with regolith of the Moon and Mars. The lunar environment lacks an intrinsic magnetosphere like Earth and thus resembles conditions measured by Lunar Reconnaissance Orbiter and inferred from Apollo program data, whereas Martian conditions are modified by a tenuous atmosphere and remnant crustal fields mapped by Mars Global Surveyor. Surface and orbital fluxes reported by teams at Jet Propulsion Laboratory and Los Alamos National Laboratory inform comparisons with interplanetary baselines established by Voyager program.
Dose quantities reported to mission planners at NASA Johnson Space Center and risk assessors at International Commission on Radiological Protection influence crew exposure limits, symptomatology studies by European Space Agency biomedicine teams, and design criteria for habitats tested by European Astronaut Centre and Roscosmos training centers. Studies reference radiobiology research from National Institutes of Health and radioprotective pharmacology investigated at Massachusetts Institute of Technology and Harvard Medical School. Operational procedures derive from contingency plans used on International Space Station and protocols developed for Artemis program sortie and long-duration missions analogous to scenarios analyzed by the National Aeronautics and Space Administration Human Research Program.
Analysis pipelines use particle transport codes such as GEANT4, Monte Carlo methods implemented at Los Alamos National Laboratory, and empirical models like the Badhwar–O'Neill model maintained by teams at NASA Goddard Space Flight Center. Radiation mapping integrates datasets from Lunar Reconnaissance Orbiter, Mars Science Laboratory, and heliospheric monitors including Advanced Composition Explorer and ACE (spacecraft), enabling validation against benchmark measurements from facilities like Brookhaven National Laboratory. Uncertainty quantification and risk modeling leverage statistical methods developed at Statistical Research, Inc. and applied by analysts at Jet Propulsion Laboratory and NASA Ames Research Center.
Shielding approaches studied by engineers at NASA Johnson Space Center, European Space Agency, and Roscosmos include passive materials tested in analogs from Apollo program regolith simulant experiments, active shielding concepts influenced by research at Massachusetts Institute of Technology and CERN, and architectural solutions planned for Orion (spacecraft) and surface habitats proposed by NASA and commercial partners like SpaceX. Biological countermeasures reference pharmacological research at National Institutes of Health and genetic studies at Cold Spring Harbor Laboratory. Operational mitigations incorporate solar forecasting from NOAA and model-driven scheduling tools developed at Jet Propulsion Laboratory to minimize CRE exposure during transit and surface activities.