Supermoon: A popular, completely nonastronomical, term for a full or new moon that occurs at or near the time when the Moon is closest to Earth in its orbit. A supermoon, depending on the exact ...
The last supermoon of 2025 lights up the December sky this week. It peaks at 6:15 p.m. EST on December 4, giving stargazers one final chance to see a moon that looks bigger and brighter than usual.