sábado, 1 de agosto de 2015


Blue Moon July 31, 2015


There are two definitions of a Blue Moon in astronomy; both are a type of full moon. If the moon actually looks blue, it's caused by a rare type of dust in the atmosphere.
Illustration image
The Mt. Karaktoa-eruption caused blue moons.
©bigstockphoto.com/Kamira
The term 'once in a blue Moon' means that that something is very rare. But just how rare, depends on your definition.
In astronomy, a Blue Moon is a full Moon, which doesn't quite fit in with the months in our calendar. However, there are two completely different ways of calculating which full Moon is a Blue Moon.

Blue Moon: The Full Explanation

Two definitions

  1. Blue Moon = The third full Moon in an astronomical season with 4 full Moons (versus the normal 3)
  2. Blue Moon = The second full Moon in a month with two full Moons.

Defining the Original Blue Moon

The correct, original definition is that a Blue Moon is the third full Moon in an astronomical season with four full Moons. A normal year has four astronomical seasons - spring, summer, fall (autumn), and winter - with three months and normally three full Moons each.
When one of the astronomical seasons has four full Moons, instead of the normal three, the third full Moon is called a Blue Moon


This is a cool version of the famous song BLUE MOON. Enjoy!!!









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Verinha Giunta
Hello People... Welcome to Verinha Teacher Blog!!! Aqui vocês vão encontrar dicas de estudo, matéria de prova e datas de entrega de trabalho. Videos e letras de músicas também... I hope you enjoy it !!!! Kisses Verinha
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