The full moon of this weekend is not an old moon, it will be a blue moon, according to NASA.
But no, it is not I will be son.
It turns out there are two ways to have a blue moon.
The most famous definition of the blue moon is to have two full moons in a calendar month – the second of which is called a blue moon.
According to NASA, this happens on average every 2.5 years.
But another way to define the blue moon is like the third full moon for a season with four full moons. This definition dates back to 1528 and this is the one used for the full moon of this weekend.
The astronomical spring (in the Northern Hemisphere) flows from the spring equinox on March 20 to the summer solstice on June 21st.
During this period there will be four full moons:
1. March 20 (worm)
2. April 19 (Pink Moon)
May 18 May (flower moon and blue moon)
4. June 17 (strawberry moon)
Since the strawberry moon comes before the solstice, which makes four moons in the spring. This also makes the moon full moon on a Saturday moon.
According to EarthSky astronomers, the latest seasonal blue moon is on May 21, 2016.
The moon will reach 100% fullness on Saturday afternoon at 4:12 pm CDT, according to NASA, but it will be full Friday night at the weekend.
May's full Moon also has several other nicknames.
American Indians have used their own names for the full moon every month, according to the Farmer Almanac, who initially started publishing the names in the 1930s.
May's full moon is also called the moon flower, the moon of the sowing corn and the milk moon.
The next blue moon will fall on Halloween in 2020, according to the National Meteorological Service.
There I have were moons that looked blue, but they were rare. One of the more famous examples was in 1883 when the Indonesian Krakatau volcano erupted, which emitted tons of ash high into the atmosphere.
The particles that make up the ashes were small enough to scatter the red light and allow other colors to be enlightened, according to NASA – making the moon look blue.
The blue-colored moons were spotted for years after the eruption.
Blue moons were also spotted after volcanic eruptions – including the Mount St. Helens in Washington in 1980. Forest fires can cause the same effect.
The moon rose at 18:35. CDT Friday in Birmingham and will be at 5:46 pm Saturday. He will rise again at 7:40. Saturday night and Sunday at 6:27. The last moon of the weekend will rise at 8:42 pm Sunday. Click here to see the weather in your area.