The closest celestial body to Earth is the Moon, while the Sun is the closest star to Earth. Therefore, the Moon and the Sun are the two celestial bodies that are most closely related to the Earth. The sun brings light and temperature to the earth, which is of great significance to the existence of life on earth. The Moon is the Earth's natural satellite and a safety barrier for the Earth, and the change in the phases of the Moon is the basis for calculating date and time on Earth.
There is a ballad that sings: "In that high heaven, there is the sun and the moon, and when the sun slowly sets in the west, the moon will quietly rise in the east, my child, don't be sad, this is the way this world is." Or "the sun is gone, the moon is here, and it's night" and so on, all of which give us the feeling that the sun appears in the daytime and the moon in the night, and the two will not meet. But in fact, the sun and moon can appear together in the sky, and during the day we can see both the sun and the moon at the same time. Of course, more often than not, we see the bright sun during the day and the bright moon at night.
So why do you sometimes see the moon during the day and sometimes you can't?Let's first understand some knowledge of celestial motion, the moon revolves around the earth, and the earth revolves around the sun with the moon, and the position of the moon and the earth will constantly change. Both the Moon and the Sun rise in the east and set in the west, with the Moon sometimes rising above the horizon during the day and sometimes at night. Although the Moon does not emit light, it can reflect the sun's rays. When the Moon reflects sunlight bright enough, or is far away from the Sun, the sunlight is not as intense, and both the Moon and the Sun are above the horizon. Then we can see that the sun and the moon appear in the sky at the same time. Sometimes the moon is not visible during the day because the strong sunlight is scattered by the gas and dust in the atmosphere, illuminating the sky so brightly that it obscures the light reflected by the moon, or because the moon has not yet risen above the horizon.
Sometimes the moon appears in the east of the sun and sometimes in the west of the sun, which is related to the position of the sun, the earth and the moon. On average, the Moon is visible during the day on 25 days of the month, and the other 5 days or so occur around the New Moon and the Full Moon. To better understand this, it is necessary to understand the time when the sun and moon rise and set, as well as the changes in the phases of the moon. The moon rises and sets with the sun around the first day of the lunar calendar, and the moon is too close to the sun, and we cannot see the moon due to the influence of the sun's strong rays. During the full moon, the sun and moon rise and fall one after another, and the moon rises at dusk and sets in the early morning, so the moon is not visible during the day. On the first quarter of the moon, the moon rises later than the sun and sets, rises at noon and sets in the middle of the night, so before the sun sets, the moon is still in the sky, and the moon is in the east of the sun, and we can see the sun and moon shining together. At the last quarter of the moon, the moon rises and sets before the sun, rises in the middle of the night and sets at noon. Hence it appears in the west of the sun, but it can also appear in the sky with the sun. In order to make you understand these contents more clearly, this ** is attached.
The sun and the moon can appear in the sky at the same time, and the sun and moon shine together, and the reason is clear.