The presence of the moon during daylight surprises children and astounds adults. The moon’s phases and reflective properties are key to understanding this natural wonder.
The moon reflects the sun’s light; it emits no light of its own. Possessing a highly reflective surface, the moon is like a massive mirror. During daylight, the sun’s rays bounce off the moon down to Earth. This is not nearly as bright as the Sun obviously, but it is up to 100,000 times as bright as the brightest nighttime star. Large enough to reflect more light than its background, the moon becomes visible.
Weather however affects daytime sightings.