The Super Blue Moon is a rare astronomical phenomenon that lights up the world's sky.

Tonight's super blue moon will be the first of four supermoons to be seen in the remaining months of the year, and according to informed sources, tonight's moon is a rare blue supermoon.

What is a blue moon? The blue moon is a mathematical phenomenon, as it depends on the difference in length of the lunar months from the Gregorian months, and it has no relation to the color blue. That is, although it bears the name blue moon, the moon is not blue in any way.

But it got this name from astronomers who color pictures of the moon taken on such nights blue (in honor and celebration of this phenomenon), which led some to believe that the moon is actually blue.

Types of blue moons According to NASA, there are two types of blue moons: a “seasonal blue moon,” which is the third full moon of a season (in this case, the summer season), and a fourth full blue moon. The current summer season began on June 20, and the blue moons have been full on June 22 and July 21. The third full blue moon is on August 19, and the fourth full blue moon before the end of summer is on September 18.

The second type of blue moon is the “monthly blue moon.” The lunar cycle is approximately 29.5 days, so there is only one full moon in most months. However, about once every 2.5 to 3 years, a full moon appears twice, at the beginning and end of the calendar month. The second full moon is called a “ blue moon .”