The astronomical Blue Moon does not look blue; it appears as a standard pearly gray. However, the moon can take on a bluish tint due to .
This is the older, traditional definition. A season typically has three full moons, but if it has four, the third full moon of that season is called a Blue Moon. 2. Does the Moon Ever Actually Turn Blue? blue moon
Following the eruption of Krakatoa in 1883, particles in the air scattered red light, making the moon appear blue for nearly two years. The astronomical Blue Moon does not look blue;
While the name suggests a change in color, a Blue Moon is actually a purely calendrical or seasonal phenomenon. There are two main scientific definitions: A season typically has three full moons, but
This is the most common modern definition. It refers to the second full moon to occur within a single calendar month. Because the lunar cycle is approximately 29.5 days, it is possible for a month to host two full moons if the first occurs right at the beginning.