Rare Astronomical Event in August 2023: Two Supermoons and a Blue Moon
Stargazers and astronomy enthusiasts are in for a treat this August as a rare celestial event occurs. In the span of one month, two supermoons will grace the night sky, accompanied by the appearance of a blue moon.
A supermoon happens when the moon’s orbit brings it closest to Earth. The moon’s path around our planet is not a perfect circle but rather an elongated oval, or an ellipse. This causes the moon to oscillate between closer and farther distances from Earth as it completes its orbital cycle. The point where the moon is closest to Earth is called the perigee, while the furthest point is known as the apogee.
During the perigee stage, a supermoon occurs when the full moon aligns with the moon’s closest approach to Earth. Supermoons appear larger and brighter than regular full moons, although the difference is subtle. This year’s supermoon cycle is special because four occurrences are happening consecutively. The first supermoon appeared on July 3, and the final supermoon of the series will occur on September 29.
In addition to the supermoons, August will also witness a blue moon. Contrary to popular belief, the term “blue moon” does not refer to the moon’s color but rather its frequency. A blue moon is the name given to the second full moon that occurs within a single calendar month. Since a full moon usually appears every 29 days, it is possible for two full moons to fall within the same month on occasion. Blue moons are infrequent events that usually happen approximately every two and a half years. The most recent blue moon was visible on August 22, 2021.
August 2023 will be especially remarkable as it will host two full moons, both of which are supermoons. The first, known as the Sturgeon Moon, will occur on August 1. Native American groups in the Great Lakes region named this moon after sturgeon, which are most abundantly caught during this month.
The second full moon of August will appear on August 30, and it will not only be a blue moon but also a supermoon. This particular blue moon will be the closest full moon to Earth for the entire year, adding an extra layer of astronomical intrigue.
For those planning to observe these lunar events, it is best to find a location away from city lights for the clearest view. Using a telescope or binoculars can enhance the experience. Supermoons are best viewed at sunset, so finding a location with a clear horizon will provide the optimal view.
Supermoons and blue moons are fascinating celestial phenomena that capture the attention and curiosity of people worldwide. These events offer unique opportunities for observation, photography, and appreciation of our celestial companion, the moon. So mark your calendars and prepare to witness a spectacular display in the night sky this August.