Lunar Phases Explained: How the Moon’s Appearance Changes #1664429 (License: Personal Use)

The image depicts the Moon’s orbital cycle around Earth, with sunlight (yellow arrows) illuminating different portions of the lunar surface, producing the familiar phases: new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, last quarter, and waning crescent. Each phase corresponds to a specific angular position between the Earth, Moon, and Sun, explaining why we see varying illuminated fractions from our vantage point on Earth.

Used in astronomy education, science curricula, or科普 articles explaining celestial mechanics; targets users seeking to understand moon cycles for stargazing, cultural calendars, or academic study.