Night Sky Today (Dec. 20, 2025): New Moon Darkness, Jupiter All Night, Ursid Meteors Next, and Interstellar Comet 3I/ATLAS
Saturday, December 20, 2025 brings one of the most skywatcher-friendly setups of the year: a New Moon has wiped out moonlight, Jupiter is blazing in the evening sky and staying up late, the Ursid meteor shower is building toward its peak, and an interstellar comet—3I/ATLAS—is still within reach of backyard telescopes just after its closest pass by Earth. AP News+4EarthSky+4Scientific American+4 If you’ve been waiting for a “go night” to step outside, let your eyes adjust, and simply follow bright signposts across the sky, tonight is it. New Moon Night: The Dark-Sky Advantage Peaks Now The Moon reaches New Moon