Question

what is blue moon ? what is the speed of blue moon ?

Answer 1

An airplane flies in front of the Blue Moon of Jan. 31, 2015. A Blue Moon does not actually appear blue; the term refers to the second full moon in a calendar month. The Blue Moon on March 31 will be the second Blue Moon of 2018 and the last one until Oct. 31, 2020. Original Image

Credit: Joel Kowsky/NASA

A full Blue Moon rises into the evening sky tonight (March 31). This will be the second and final Blue Moon of 2018, so don't miss it!

Despite the name, the "Blue Moon" won't actually be blue. In fact, it will look the same as any other full moon. According to the current definition, the term refers to the second full moon in a given calendar month. The traditional definition of a Blue Moon was reserved for the third full moon in a season that has four full moons, which happens in years that have 13 full moons instead of the usual 12.

Answer 2

HEYAAA,,,,

A blue moon is an additional full moon that appears in a subdivision of a year: either the third of four full moons in a season, or a second full moon in a month of the common calendar.

The effect can be caused by smoke or dust particles in the atmosphere, as has happened after forest fires in Sweden and Canada in 1950 and 1951, and after the eruption of Krakatoa in 1883, which caused the moon to appear blue for nearly two years. Other less potent volcanoes have also turned the moon blue.

SPEED OF BLUE MOON: The frequency of a blue moon can be calculated as follows. It is the period of time it would take for an extra synodic orbit of the moon to occur in a year. Given that a year is approximately 365.2425 days and a synodic orbit is 29.5309 days, then there are about 12.368 synodic months in a year.

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