TONIGHT......Supermoon is a spectacular sight! The upcoming supermoon - on Monday, Nov. 14 - will be especially "super" because it's the closest full moon to Earth since 1948. We won't see another supermoon like this until 2034. The moon's orbit around Earth is slightly elliptical so sometimes it is closer and sometimes it's farther away. When the moon is full as it makes its closest pass to Earth it is known as a supermoon. At perigree - the point at which the moon is closest to Earth.