Tonight you can admire in the sky a blue moon, a phenomenon that occurs approximately every three years and that will not happen again until January 2018.
The US Naval Observatory reported on its website that the natural spectacle is called Blue Moon to be the second full within a calendar month, moon July in this case.
On site experts detailed that each lunar cycle lasts approximately 28 days, so when a full moon occurs at the beginning of the month is likely to be a second at the end.
That’s what will happen this month, which had its first full moon the Day 2 and will have a second, “Blue”, tonight
Also called explained that is called Blue Moon.; however, it will not be of that color, but in shades of gray, white or silver, which are usually seen in the satellite.
According to experts, the Moon has been dyed blue rarely , the effect of dust, ash and smoke into the atmosphere as a result of major volcanic eruptions or forest fires.
The last blue moon occurred on August 31, 2012 and for the next after that of Friday, will have to wait until January 2018.
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