Light reflecting from Ceres provides insight into its surface features. The section of spectrum between 2.7 and 3.3 resembles (though is not exactly like) pure water, while the dip at 3.3 revealed the presence of carbonates on the dwarf planet's surface. Credit: Hiroi, T. and M. E Zolensky, C. M. Pieters, M. E. Lipschutz, (1996). Thermal metamorphism of the C, G, B, and F asteroids seen from the 0.7 micron, 3 micron and UV absorption strengths in comparison with carbonaceous chondrites. M&PS 31, 321-327.
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