Moon in December 2025: Waning Crescent Tonight, New Moon Date, Geminids Peak, and NASA’s Latest Lunar Push
December 14, 2025 is shaping up as one of the most “Moon-centric” nights of the month—not because the Moon is bright and dominating the sky, but because it isn’t. With the Moon now a waning crescent and shrinking toward the New Moon on December 19, skywatchers are getting darker skies right as the Geminid meteor shower reaches its peak window. WUSF+2Space+2 At the same time, December’s Moon story isn’t only about stargazing. NASA’s lunar program is also in the headlines this month, from new Artemis lunar surface science instruments to “blast-in-a-vacuum-sphere” tests designed to understand how rocket exhaust will kick up abrasive lunar dust during future Moon landings. NASA Science+1 Below