Rank the sun's layers in order of density from the sun's center outward, from highest to lowest. Photosphere, Chromosphere, Corona, Radiation Zone, Convection Zone
The core is the sun's most dense and hottest region (150 g/cm3/15.7 million K), accounting for approximately 20-25% of the sun's overall radius. The photosphere, chromosphere, and corona make up the majority of the Sun's atmosphere. The photosphere is thought to be the densest, whereas the corona is thought to be the least dense. The highest temperature of the corona part is responsible for the corona's low density.
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