This lunar phenomenon only happens once every two or three years – which is why the phrase "once in a blue moon" means something that happens infrequently – but when it does, it dazzles.
Blue supermoon dwarfs iconic Australian landmark
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This lunar phenomenon only happens once every two or three years – which is why the phrase "once in a blue moon" means something that happens infrequently – but when it does, it dazzles.