Applicability to primitive materials beyond CM compositions

Determine whether the radiative-heating effects observed in CM simulants and the CM2 meteorite Aguas Zarcas apply to other primitive asteroid materials or depend on specific compositions.

Background

The experiments use CM-type carbonaceous chondrite simulants and one CM2 meteorite, Aguas Zarcas. Because primitive asteroids encompass a broader range of carbonaceous and other compositions, the generality of the observed brightening, consolidation, and morphological modification remains unresolved. Establishing compositional dependence is necessary before extrapolating the laboratory results to the wider near-Sun asteroid population.

References

Thus, it remains unclear if the observed behaviors are applicable to other primitive materials (e.g., other carbonaceous chondrites) or depend on specific compositions, leaving this for future work.

— Experimental evidence for physical alteration of fine regolith on near-Sun asteroids  (2610.17652 - Geem et al., 13 Oct 2026) in Section 4, Discussion, limitations paragraph