The Blue Moon event taking place tonight will be a rare treat for sky gazers.
A blue moon, being the second of two full moons within any given month, is a rare occurrence; which has sprouted the phrase “once in a blue moon” used to describe an event that rarely takes place.
However, “blue moon” is not in fact blue-colored at all. The term refers to its rarity; blue moons are either the fourth full moon in a season or the second full moon in a month. The first full moon occurred on August 1st, but tonights “blue moon” will be the last blue moon for three years.
It appears in the sky every two or three years, as a result of the mismatch between the lunar month and the mixture of Augusts, Octobers etc which humanity has created.
Blue moons exist due to our calendar months being imperfectly synched to the lunar months. It takes 29.5 days for the moon to orbit Earth, during which sky watchers observe all of its phases.
The blue moon is expected to reach its full phase at 9:58 a.m.
This article has been read 1058 times!