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Sodium-rich Particle as Evidence of Recent and Intense Micrometeoroid Bombardment on Asteroid Ryugu

  • Authors: E. Palomba, G. Pratesi, M. Angrisani, X. Shehaj, F. Dirri, A. Longobardo, D. Fulvio, S. Caporali, B. Cortigiani

E. Palomba et al 2026 The Astrophysical Journal Letters 1001 .

  • Provider: AAS Journals

Caption: Figure 2.

Electron microscope images and chemical maps of drop-melt splash impact structure observed on the A0226 surface. (a) Panoramic image in SE mode. (b) Higher-magnification view of the heavily cratered surface. (c)–(e) FEG-SEM-EDS element maps of the same region, overlapped with the drop-melt splash impact structure: (c) silicon (Si, k-line), (d) iron (Fe, k-line) and (e) sulfur (S, k-line).

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