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Regolith Simulants

All articles tagged with #regolith simulants

space-exploration3 hours ago•56 min saved

Mars soil may defend against Earth microbes while enabling future farming

Space-biologist researchers exposed tardigrades to Mars-regolith simulants (MGS-1 and OUCM-1). In MGS-1, tardigrades entered dormancy within two days, suggesting a toxic component that could be washed away—washing improved tardigrade resilience and made regolith more hospitable for growth, while OUCM-1 remained inhibitory but less so. The work implies Mars’ soil may defend against Earth microbes, aiding planetary protection, and that washed regolith could potentially be turned into crop‑soil for future missions. The findings were published in December 2025 in the International Journal of Astrobiology.

via Space|

#mars-regolith #microbial-contamination #planetary-protection

science2 days ago•5 min saved

Water Wash Could Help Tardigrades Survive Martian Dirt, Boosting Mars Farming Prospects

Two tardigrade species were placed in Mars regolith simulants (MGS-1 and OUCM-1) and in Earth sand as a control. In the regolith, tardigrades died off quickly, especially Hypsibius exemplaris, while Ramazzottius cf. varieornatus fared somewhat better but still declined. When the simulant was rinsed with water, tardigrades survived longer and remained active, suggesting a water-soluble, damaging component in MGS-1. The finding could inform future Mars agriculture and planetary protection, though researchers did not test radiation, temperature, or other environmental factors, and the exact cause remains to be identified. The study was published in the International Journal of Astrobiology.

via ScienceAlert|

#astrobiology #mars-regolith #planetary-protection