|Voila - a Full Red moon|
It's one more full moon than we normally get in the season. (Thus the name.) And if you've been outside these summer nights, it's generally huge.
|September 2009's blue moon -- from Wikipedia. (See the entry here.)|
Full moons happen approx. every 29.5 days...but a blue moon is much less common. After tonight, we won't see another one until 2015.
Huffington Post tells you all about it here.
And of course, there's...