The last supermoon of the year will shine soon in December skies.

Supermoons happen a few times a year in clusters, taking advantage of the sweet spot in the moon's elliptical orbit, and Thursday night's event is the last of three in a row in 2025.

According to the Griffith Observatory , the full moon peaks around 3:15 p.m. Thursday and will be the biggest and brightest as the night falls.

The supermoon can be glimpsed in clear night skies without any special equipment. But it can be tough to discern the subtle change with the naked eye.

What makes a 'supermoon?'

A more popular term than a scientific one, a supermoon occurs when a full lunar phase syncs up with an especially close swing around Earth. This usually happens only three or four times a year and consecutively, give

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