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The Sun may appear blue after volcanic eruptions or major forest fires. This is typically due to Rayleigh scattering by aerosol particles.
See also
- Green flash – a phenomenon at sunset, when the last edge of the sun may flash green or even blue
References
- Wullenweber, Nellie; Lange, Anna; Rozanov, Alexei; von Savigny, Christian (2021-04-30), "On the phenomenon of the blue sun", Climate of the Past, 17 (2): 969–983, doi:10.5194/cp-17-969-2021, ISSN 1814-9324
{{citation}}: CS1 maint: unflagged free DOI (link)
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