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RE: Red: Science Picture Challenge #3 - Beautiful sunset
Oh, it seems depends on the sizes of pollutants!
Small aerosols made sunset even redder because of more scattering as you said! But large particles turns the colour of the sky muddy.
https://www.scientificamerican.com/article/fact-or-fiction-smog-creates-beautiful-sunsets/
https://news.nationalgeographic.com/news/2013/10/131027-sunset-sky-change-color-red-clouds-science/
Ah! The size :)
Thanks to you, i also did enter the challenge.
Since, now we're challengers fighting for the prize, good luck to you ;)