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Cold Supermoon 2025: The second-biggest full moon lights up the sky Know how to watch this stunning celestial event

The Cold Supermoon, the second-largest full moon of 2025, rises in the east at twilight on Dec. 4, seeming to be higher than any other full moon this year. Part of a four-supermoon sequence, it coincides with its nearest approach to Earth, making it almost 10% bigger than usual. Skywatchers can enjoy it on Dec. 4 and 5, with the use of binoculars or beginner telescopes. Traditional names are Cold Moon, Long Night Moon, and Frost Exploding Trees Moon. The next full moon is the Wolf Moon on Jan. 3, 2026.