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, making it a spectacular sight for skywatchers. Supermoons can happen several times a year, depending on the moon's orbit. The term is often used to describe full moons that are within 90% of their closest distance to Earth. This phenomenon is not only visually striking but also provides an opportunity for scientists to study the moon's effects on Earth, such as tides and gravitational pull.