A blue moon can refer to the second full moon in a month or the moon actually being blue.
We sometimes see a full moon twice in one month due to the moon's cycle of slightly less than one month.
A moon which is actually blue may result from pollutants or dust in the atmosphere, making the moon look blue.
The Next blue moon will be on August 31st 2012 at 13:56 (Gmt). That's why it's "once in a blue moon" See related link for a blue moon calculator.
* See link for different definitions of Blue Moon
*Note* You cannot "see" a "blue" moon as in the colour. It is just a term - see related link. No "blue moons will occur in 2011. December of 2009 - it's when there are two full moons in one month.
a blue moon is just a myth and if it was real you can see it because your looking at the same exact moon as everyone else
There isn't anything special about a "blue moon"; it is just the second full moon in a calendar year, which happens about every other year. The Moon doesn't actually turn "blue". The only thing that causes the Moon to literally appear blue is fine volcanic ash high in the stratosphere.
Blue Moons aren't like solar eclipses - they don't just happen to a certain part of the Earth. A blue moon is just the name for the event where a full moon happens twice in the same month; The second full moon in that month is called a "blue moon". You can see the moon from anywhere on the Earth in a 24 hour period, so yes, the next blue moon will happen "over" the US.
The term "blue moon" does not refer to the color, but to an occasional fourth full moon in a season (normally there are three), or alternately, to a second full moon in a month (usually there is one).
A blue moon.
Usually the first two and the last two letters are blue, making it "once in a blue moon"
Yes sometimes there are 2 full moons during one month. These do not happen very often and the second full moon is called a 'blue moon', hence the expression, "once in a blue moon".
Basically blue. You can make out land and clouds also.
She didn't, but Blue music Blue skies