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Phoenix lander
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Martian dust hazard assessments
5 clusters · 20 sources · last updated
Latest: Mars dust contains toxic perchlorates posing risks to astronauts
In July 2026, NASA announced a new permissible exposure limit for Martian dust—0.1 mg per cubic metre averaged over 30 days—which is three times stricter than its lunar-dust standard. This limit was established by a work