Blue Moon tonight

[Renew Deal]

Get ready. If you live anywhere in Europe or the Americas, the "blue moon" is coming to a sky near you Saturday. The phenomenon is mainly due to astronomical arithmetic (and a few mix-ups, but we'll get to those later).
"It's how the math works out," said Philip Hiscock, a folklorist at Memorial University of Newfoundland in Canada. Hiscock is recognized as an authority on the history and folklore surrounding the phrase "blue moon." The phrase has come to refer to those rare occasions when a second full moon appears within a single calendar month.

Why two full moons in a single month? It's because the natural cycle of moon phases doesn't perfectly match up with our human-made calendar.
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http://news.nationalgeographic.com/news/2004/07/0728_040728_bluemoon.html

[Wilber_Stool]

1. You saw me standing alone.

from Tom King of Watauga, Texas: "I had never paid any real attention to the term 'Blue Moon' until a recent October evening. I had my telescope set up in the backyard in Watauga, Texas, and I was about to take it inside due to deteriorating viewing conditions. Before I did, the moon began rising in the east with a strange blue tint I had not seen before. I used my SACIVb CCD camera attached to a 5" Newtonian telescope to capture this image (October 13, 2003, 12:32 AM local time). The temperature was falling and the air was damp and heavy with moisture."

[tigereye]

2. beautiful!

I thought I was losing my mind. Weren't people talking about a red full moon just a few nights ago? Very cool.