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"Blue Moon" Appears in Sky Saturday Night

Posted by Hemos on from the blue-moon-you-saw-me-standing-alone dept.

ArbiterOne writes "Tonight a rare spectacle can be seen: the second full moon in a month, which is sometimes called the "blue moon", according to CNN. Don't be disappointed if it isn't actually blue, though; the blueness is caused by increased density of smoke or ash in the air, such as after a volcanic eruption."

1 of 154 comments (clear)

  1. Blue moon may not mean what you think by cityslicker · · Score: 0, Redundant

    According to an article here: http://skyandtelescope.com/news/article_1310_1.asp , the name 'blue moon' has been around for 400 years, but the meaning "2nd moon in a month" was only invented 25 years ago.