Rare 'blue supermoon'

The Blue Supermoon: The Biggest and Brightest Full Moon of the Year


As we gaze up at the night sky, we are often captivated by the beauty and mystery of the moon. Its ethereal glow has inspired countless stories, poems, and songs throughout history. And on the night of August 30, 2023, something truly special will grace our skies – the Blue Supermoon. This rare celestial event is the result of three lunar phenomena happening simultaneously, making it the biggest and brightest full moon of the year. In this article, we will explore the fascinating details of this extraordinary event, debunk some common misconceptions, and provide tips on how to best observe and appreciate the Blue Supermoon.

The Blue Supermoon: A Unique Name for a Unique Event

Contrary to its name, the Blue Supermoon has nothing to do with the moon’s color. In fact, it will actually appear orange rather than blue. The term “blue” in this context refers to the fact that it is the second full moon in the month of August. This phenomenon is known as a “Blue Moon.” There are two types of Blue Moons – the monthly Blue Moon and the seasonal Blue Moon.

The monthly Blue Moon occurs when there are two full moons within the same calendar month. This is a relatively rare occurrence, happening roughly once every two to three years. The next monthly Blue Moon after August 2023 will be on May 31, 2026. On the other hand, a seasonal Blue Moon refers to the third full moon out of four in a single astronomical season. These seasonal Blue Moons also occur every two to three years, with the next one taking place on August 19, 2024.

The Supermoon Phenomenon: A Lunar Proximity

The second part of the Blue Supermoon’s name comes from the “supermoon” phenomenon. A supermoon occurs when the full moon coincides with its closest approach to Earth in its elliptical orbit. The moon’s orbit is not a perfect circle but rather an ellipse, causing its distance from Earth to vary throughout its orbit. When the moon is at its closest point to Earth, known as perigee, it appears larger and brighter than usual.

To be classified as a supermoon, the moon must come within 90% of its perigee during a given month. In 2023, the Blue Supermoon is one of four supermoons, but it is the largest and brightest of them all. At a distance of 222,043 miles (357,344 kilometers) from Earth, it will be a breathtaking sight to behold. However, its proximity to Earth is only about 20 miles closer than the previous full moon on August 1, 2023.

The Blue Supermoon and Its Cosmic Company

As we marvel at the Blue Supermoon, we will also be treated to another celestial spectacle. The ringed beauty of our solar system, Saturn, will be making a special appearance in the night sky. Just a few days past opposition, when it is directly opposite the sun as seen from Earth, Saturn will shine brightly alongside the Blue Supermoon. Its presence will add an extra touch of magic to the already enchanting event.

From New York City, Saturn will be situated in the constellation Aquarius, positioned above and to the right of the moon. However, for those observing from the Southern Hemisphere, Saturn will appear below the moon. This cosmic dance between the Blue Supermoon and Saturn offers a unique opportunity to witness two celestial wonders in close proximity.

The Best Time to Observe the Blue Supermoon

To witness the full splendor of the Blue Supermoon, it is important to know the best time to observe it. The ideal viewing time is when the moonrise occurs just after sunset, creating a stunning visual of the full moon emerging in the twilight sky. In the case of the Blue Supermoon, moonrise will happen on two successive evenings – Wednesday, August 30, and Thursday, August 31.

To make the most of this celestial event, find a location with a clear view of the eastern horizon. This will allow you to witness the moon as it rises above the landscape, surrounded by the fading light of the setting sun. Be sure to check the moonrise time for your specific location to ensure you don’t miss this awe-inspiring sight.

Tips for Observing the Blue Supermoon

To enhance your experience of the Blue Supermoon, here are a few tips to keep in mind:

  1. Find a location with minimal light pollution: To fully appreciate the moon’s brilliance, choose a spot away from the glare of city lights. This will allow you to see the moon and its surrounding celestial companions more clearly.
  2. Use binoculars or a telescope: While the Blue Supermoon will be visible to the naked eye, using binoculars or a telescope will enhance your view and enable you to observe its intricate details. If you’re new to skywatching, consider investing in a beginner-friendly telescope like the Celestron Astro Fi 102.
  3. Capture the moment: If you’re interested in astrophotography, the Blue Supermoon presents a fantastic opportunity to capture stunning images of the moon and its surroundings. Check out our guide on how to photograph the moon for tips and techniques to help you get the best shots.
  4. Dress appropriately: Depending on your location and the time of year, the temperature can vary during the night. Dress in warm layers to ensure your comfort while you marvel at the celestial wonders above.

Remember, the Blue Supermoon is a rare event, so take the time to savor the experience and appreciate the beauty of our cosmic neighborhood.


The Blue Supermoon of August 30, 2023, is a celestial spectacle that combines the rare occurrence of a Blue Moon with the proximity of a supermoon. As the biggest and brightest full moon of the year, it offers a mesmerizing sight in the night sky. Alongside the Blue Supermoon, the majestic planet Saturn will grace our view, adding to the magic of this extraordinary event. Whether you’re an avid skywatcher or someone who simply appreciates the wonders of the universe, the Blue Supermoon is an opportunity not to be missed. So mark your calendars, find a suitable location, and prepare to be awed by the beauty of our celestial companion as it shines in all its glory.

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