Three planets will be visible with the final full moon of the year

December’s Cold Moon, the final full moon of the year, will reach its fullest phase at about 11:35 p.m. Saturday. The moon will sit above the horizon for more than 14 hours, making it the longest full moon of 2021. Venus, Saturn and Jupiter, as well as a number of star constellations, will also be visible to the naked-eye this weekend.

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