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To: Gauguin who wrote (18164)3/2/1999 11:53:00 AM
From: Ish  Read Replies (2) | Respond to of 71178
 
I don't know why it's called a blue moon, maybe the first time somebody noticed it the moon was blue. That happened here a few nights back although it wasn't full. There was an article on it in The Farmers Almanac a couple of years ago but I've slept since then and don't remember the details. I wonder why there isn't a green moon since it's made of green cheese.



To: Gauguin who wrote (18164)3/2/1999 12:45:00 PM
From: Jacques Chitte  Read Replies (1) | Respond to of 71178
 
In the 19th century there were three occasions (two biiig volcanic explosions and a biiig forest fire) which pumped the stratosphere full of particulates. A decade ago we had Pinatubo do the same in miniature. Particulates increase scattering in a way that red light is selectively scattered out. So the sky is pink but the disk of the moon takes on a bluish cast.
The rarity of this event must have inspired the name for the uncommon but not truly rare lineup of full moons with calendar months.