What are the Blue Moon and Supermoon?

Understanding the Difference: Blue Moon vs. Supermoon

The Blue Moon and Supermoon are two distinct lunar phenomena, each captivating in its own way:

1. Blue Moon:

The term “Blue Moon” does not refer to the moon’s color but rather to the occurrence of two full moons within a single calendar month. Typically, a full moon appears once every 29.5 days, resulting in about 12 full moons in a year. However, due to variations in the number of days in a month, it is possible to have two full moons in a month, and the second full moon is referred to as the Blue Moon. This phenomenon happens approximately every 2 to 3 years. While a Blue Moon is not actually blue, it remains an intriguing and relatively rare event for skywatchers.

2. Supermoon:

A Supermoon is a term used to describe a full moon that appears larger and brighter in the night sky than an average full moon. This is due to the moon’s elliptical orbit around the Earth, which causes it to be at its closest point (perigee) and its farthest point (apogee) in relation to our planet. When a full moon occurs near its perigee, it appears about 14% larger and 30% brighter than when it is near its apogee. The term “Supermoon” was popularized by astrologer Richard Nolle in 1979. Supermoons happen several times a year, providing sky enthusiasts with more frequent opportunities to witness this captivating spectacle.

Both the Blue Moon and Supermoon have captivated human imagination and inspired folklore and stories throughout history. While the Blue Moon adds a touch of uniqueness to the lunar calendar, the Supermoon offers an awe-inspiring sight that enchants observers with its brilliance and magnificence. Whether it’s the rare occurrence of the Blue Moon or the more frequent appearances of Supermoons, both phenomena continue to spark wonder and fascination in those who take the time to witness and appreciate the beauty of the night sky.