A "Supermoon" occurs when a full moon coincides with the moon's closest approach to Earth in its elliptical orbit, known as perigee. During this time, the moon appears larger and brighter in the sky than usual. This phenomenon can happen several times a year, depending on the moon's orbit.
The term "Supermoon" was popularized in 1979 by astrologer Richard Nolle, but it has since gained traction in astronomy. While the difference in size can be subtle to the naked eye, a Supermoon can appear up to 14% larger and 30% brighter than a typical full moon, making it a captivating sight for skywatchers.