What is the phenomenon of the revolution of the moon?

The moon phase changes because the moon goes around the earth. When the moon revolves, it goes to different positions in the orbit. When the sun shines on the moon, from the earth's point of view, different shapes of surface bright areas and dark areas will be formed, which is the moon phase.

What is an eclipse? Eclipse, also known as eclipse, refers to the moon moving between the sun and the earth. If the three are in a straight line, the moon will block the light from the sun to the earth, and the shadow behind the moon will just fall on the earth. At this time, the eclipse happened.

In folklore, this phenomenon is called Tiangou Food Day. Eclipses only occur at the new moon, when the moon and the sun are in harmony. Eclipses are divided into partial solar eclipse, total solar eclipse, annular solar eclipse and total solar eclipse. When observing the solar eclipse, you can't look directly at the sun, otherwise it will cause temporary blindness and even permanent blindness in severe cases.

The lunar calendar and lunar calendar in astronomy mainly refer to calendars arranged according to the moon phase cycle. The moon revolves around the earth once (taking the sun as a reference, but actually the moon revolves for more than one week) as January, that is, based on the first month of the lunar calendar, a year is divided into twelve calendar months. In agrometeorology, the lunar calendar is commonly known as lunar calendar, lunar calendar, ancient calendar and old calendar, which refers to the traditional summer calendar in China. Astronomically speaking, the summer calendar is actually a kind of lunar calendar, because the lunar calendar needs extra information such as leap months, solar terms and festivals than the traditional lunar calendar.