Почему закаты становятся фиолетовыми?

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Вокруг Северного полушария наблюдатели за небом замечают необычный цвет в закатном небе: фиолетовый.
Оттенок колеблется от мягкого фиолетового до ярко-пурпурного, и часто сопровождается тонкими серебристыми полосами вдоль западного горизонта. - Что тут происходит?
Это явление, вероятно, является результатом двух вулканов, которые недавно выбросили сернистые газы в стратосферу.
Получить полную историю и советы по наблюдению на Spaceweather.com

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