Why Do Supermoons Happen? Video Watch time Under 1 minute August 11, 2024 Image Do you know what causes a supermoon? In this video, we dive into August’s Sturgeon Moon, which will be a supermoon because the moon will be at perigee, or the closest point in its orbit to Earth. Additionally, the Moon will look extra large at moonrise because of the “Moon illusion,” an optical effect where the Moon appears larger when it’s closer to the horizon. This will be a great opportunity to take photos of the Moon - share your shots with us! Topics Space Sciences Share