Taken from Wikipedia
Visibly blue moon
The most literal meaning of blue moon is when the moon (not necessarily a full moon) appears to a casual observer to be unusually bluish, which is a rare event. The effect can be caused by the Tyndall effect (in turn, caused by smoke or dust particles in the atmosphere), as has happened after forest fires in Sweden and Canada in 1950 and 1951,[7] and after the eruption of Krakatoa in 1883, which caused the moon to appear blue for nearly two years. Other less potent volcanos have also turned the moon blue. People saw blue moons in 1983 after the eruption of the El Chichon volcano in Mexico, and there are reports of blue moons caused by Mt. St. Helens in 1980 and Mount Pinatubo in 1991.
Is Mother Nature, via an Icelandic volcano trying to say something?
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