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The term "blue moon" is used when something very rare happens, the most common usage of this term is "Once in a blue moon".

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11y ago

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What does a blue moon look like?

There are 2 uses of the term 'Blue Moon' - Because the lunar cycle is 28 days and the year has 365 days it works out that there are 13 new moons in a year. The year is divided into 4 seasons - Spring, Summer, Autumn and Winter, each of which would have 3 new moons (which are referred to as the Early Spring Moon, Mid-Spring Moon, Late Spring Moon and so on for the other 3 seasons) and wherever the extra 13th new moon falls it is given the name Blue Moon and this term is used to describe the 3rd new moon out of the 4 in the season. It would look exactly the same as the other 12. The other use of the term Blue Moon is when certain atmospheric conditions, usually smoke at high altitude, gives the Moon the appearance of a slightly blue tint.


When was the last blue moon in December?

The last one was December 31st 1990. The next one is December 31st, 2009.


How many full moons do you need in a month to make a blue moon?

A blue moon is the term used when there are two full moons within the same calendar month. This occurs about every 2.7 years on average.


What is a term that refers to the moon?

The term "lunar" is used for things relating to the moon.


How often is once in a blue moon?

When a single month has two full moons, the second full moon is called a Blue Moon. It happens every 2-3 years. Originally, the Maine Farmer's Almanac defined a "blue moon" as the 13th moon in a tropical year(from winter solstice to winter solstice). Normally, each season would consist of 3 moons. In a season of 4 moons, the third would be considered blue. Blue ink was used to record this event in the almanac. As a reference to the event, though, the idiom "once in a blue moon" means rarely. There is no set amount of time.


Term used for the moon to describe the shape growing larger?

Waxing. This term is used to describe the phase of the moon when it appears to be growing larger in the sky as it transitions from a new moon to a full moon.


What term is used to describe the decrease in the visible portion of the moon?

The term used to describe the decrease in the visible portion of the moon is "waning." This occurs as the moon transitions from a full moon to a new moon phase.


How did the blue moon angelfish get its name?

It would seem to come from an olde English word "belewe" meaning betrayer.This was used by the early clergy to describe a moon which was too early for the lent moon. This moon was called the betrayer moon or belewe moon.


What is the term used to describe a large natural satellite of any planet?

The term used to describe a large natural satellite of any planet is a "moon."


What does the term lunar mean?

The term lunar refers to anything related to the moon. It is often used to describe phases of the moon, lunar eclipses, or events that occur on the moon.


How does the moon turn into a new moon?

The moon doesn't 'turn into' a new moon, or anything else. The term 'new moon' is used when the moon is on the same side of the Earth as the sun. When that happens, the lit side of the moon is completely facing away from the earth, and the bright blue daylight sky prevents us from seeing any part of its dark face. Because the ancients thought that the moon had disappeared completely, they often used the term 'new moon' (or something similar) to describe the first thin crescent that would appear the following day.


More technical term used for the word moon?

Satellite