03/21/2026
Spotlight: The Waxing Crescent Moon â¨đ
Look up tonight and you might catch one of the most magical sights in the sky, the waxing crescent Moon! That delicate silver curve hanging just after sunset is the Moonâs way of saying: âIâm back, and Iâm growing.â
đ What makes the waxing crescent so special?
- Itâs the first visible phase after the New Moon, when the Moon reappears as a thin sliver in the western sky.
- The word âwaxingâ literally means growing, and each night, a little more of the Moon lights up as it heads toward full.
- That curved shape? Itâs called a crescent, and it gradually expands from about 0% to nearly 50% illumination before reaching First Quarter.
- If you look closely, you might see a faint glow on the dark side, this is earthshine, sunlight reflected off Earth lighting up the Moonâs night side (sometimes called the Da Vinci glow).
The waxing crescent is best seen shortly after sunset in the western sky, often setting just a couple hours after the Sun. This phase is perfect for beginners, soft moonlight, darker skies, and sometimes even a bright neighbor like Venus hanging nearby. Itâs a great time to grab binoculars or just step outside and enjoy the view.
Mark your calendars for the Dark Skies Festival at the Mcdonald Observatory happening April 13â19. Celebrate International Dark Sky Week under some of the darkest skies in McDonald Observatory and neighboring locations throughout Alpine, Fort Davis, Presidio, Terlingua, and more!
Whether youâre catching tonightâs crescent or planning a trip out to West Texas, this is your reminder to look up. The sky is always putting on a show, you just have to step outside to see it.
Photo Creditsđ¸: https://www.flickr.com/photos/michael07/7626673144
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