The closest supermoon of the year is approaching in November. It happens when a full moon is closer to Earth in its orbit, making it appear slightly bigger and brighter. Wednesday’s event is the second of three supermoons this year and also the closest. The moon will come within just under 222,000 miles of Earth. The change in the moon’s size can be tough to discern with the naked eye. Supermoons happen a few times a year. A supermoon in October made the moon look somewhat larger. The last supermoon of the year will rise in December.