Supermoon Sunday is at hand, and although some may scoff, the supermoon concept provides a good excuse to take a close look at a celestial sight we often take for granted.
By some measures, Dec. 3’s full moon is the only supermoon of 2017. The liberal definition would be a full or new moon that’s at or near its closest approach to Earth in its orbit. My definition is stricter: There’s only one supermoon in a given year, reserved for the full moon with the biggest apparent size.
