Mexico, July 31 (Notimex) .- A glance and from any part of Mexico, you can appreciate the Friday night “Blue Moon”, a phenomenon that occurs every three years.
The Institute of Geophysics of the National Autonomous University of Mexico (UNAM) said that contrary to its name, the moon is not blue, the term indicates that you can see the star filled two phases in the same month.
Because the lunar cycle is 29.53 days, after the first full moon falls at the beginning of the month is likely to be perceived as follows at the end and in gray, white or silver.
The first recorded use of the term “blue moon” dates from 1524, which referred to the third stage in a full season within which fell four full moons instead of the three that regularly occur in one season .
However, in 1946 when the term gets a new interpretation through an article in the US magazine Sky & amp; Telescope, which is called “Blue Moon,” the second full moon that falls within a calendar month.
It is reported that after forest fires or volcanic eruptions, the moon takes a slightly blue hue as ash particles that they are released generate the moonlight, passing through the Earth’s atmosphere, look for that color.
This phenomenon was seen after the eruption of the Krakatoa volcano in Indonesia in 1883 and Santa Elena, located in the United States in 1980 and Chichon in Mexico in 1983, among others, however, has nothing to do with the definition of blue moon.
The last “Blue Moon” occurred on August 31, 2012 and after tonight will be charged, will have to wait until January 2018 to return to see the next
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