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Whenever the moon orbits between the sun and the earth, and the hemisphere illuminated by the sun is facing away from the earth, people cannot see the moon on the earth, and this day is called the "new moon", also called the "new moon", which is the first day of the lunar calendar.
After the new moon, the moon follows the direction of the earth's rotation, and the bright area gradually turns to the earth, and the moon can be seen on the earth showing a trace of slender silver hooks, appearing in the western sky, bowing its back towards the sunset, this moon phase is called "moth eyebrow moon", which is the beginning of the lunar calendar.
Three, four. Subsequently, the moon moves away from the sun in the sky day by day, at the beginning of the lunar calendar.
On July and August, half of the bright area facing the Earth, one can see the half moon (convex facing west), and this phase of the moon is called the "first quarter moon".
When the Moon moves in the direction of the Earth's back sun, the lunar calendar.
Ten. Five, ten.
On the sixth and seventeenth, the bright areas of the moon are all facing the earth, and we can see a full moon, and this phase of the moon is called the "full moon", also called "hope".
After the full moon, the west side of the bright area begins to deficit, and it is the lunar calendar.
Two. Ten. On the second and twenty-third, you can see the half moon (convex facing east), and this phase of the moon is called the "last quarter moon". During this period, the Moon moves closer to the Sun and rises in the east in the middle of the night.
After another four or five days, the moon turns into a moth-eyebrow-shaped moon bud with its back arched towards the rising sun, and this moon phase is called the "waning moon".
When the Moon moves between the Sun and the Earth again, the Moon returns to the "New Moon".
This is how the phases of the moon change over and over again. If calculated by the cycle of the moon phase change (that is, the entire process of a moon phase change), from the new moon to the next new moon, or from the full moon to the next full moon, it is a "synodic month", with an interval of about a few days, and the length of a month in the Chinese lunar calendar is determined according to the "synodic month". Agree with 5|Comments.
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By what? Shape? New moon Lack of moon Full moon ,
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The moon is divided into the following forms: New Moon (New Moon), Waxing Moon, First Quarter Moon, Gibbous Moon, Mochizuki (Full Moon), Gibbous Moon, Last Quarter Moon, and waning Moon (Waxing Moon).
1. New moon, also known as the new moon (the first day of the lunar calendar).
The moon moves between the sun and the earth, facing the earth with the darkness of the moon, rising and sinking with the sun, and is usually invisible to people.
2. Emei Moon (the beginning of the lunar calendar.
3. The fourth day of the first lunar month) The Emei Moon appears in the western sky in the evening of the first month, and the moon faces west and is sickle-shaped.
3. The first quarter moon (the beginning of the lunar calendar.
7. 8th lunar month) appears in the first half of the first half of the moon, in the western sky, the moon faces west, and the western half of the moon is transparent.
4. Waxing gibbous moon (the tenth day of the lunar month.
2. 13th).
The vast majority of the Moon's circular surface is bright, called a "gibbous moon". The gibbous moon before the full moon is also called the "upper gibbous moon", which generally does not rise in the east before the sun and does not rise in the west before sunrise the next day.
5. Full moon (10th lunar month.
5. 16) The full moon, also known as the moon, at this time the earth is between the sun and the moon, and the light of the entire moon faces the earth, only then can the full moon be seen, and the ancient people called this day "the moon".
6. Deficit gibbous moon (16th to 23rd lunar month).
The gibbous moon after the full moon is also called the "gibbous moon", which generally rises in the east after the sun does not rise, and does not rise in the west after sunrise the next day.
7. The second quarter moon (the twentieth day of the lunar calendar.
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Appears in the second half of the second half of the moon in the eastern sky, and the eastern half of the moon is bright (the moon faces east).
8. Waning Moon (24th to the end of the lunar calendar).
The waning moon is at the dawn at the end of the month, appearing in the eastern sky, the moon faces east, the so-called waning moon is like a hook, is the most vivid depiction.
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There are 8 types of moon shapes: crescent moon, crescent moon, first quarter moon, waxing and convex, full moon, deficit convex, second quarter moon, and waning moon.
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1. On the first day of the lunar month, the moon is located between the sun and the earth. People on Earth happen to see the dark side of the Moon away from the Sun, so they can't see the Moon on Earth, which is called the New Moon or New Moon.
2. From the second day of the lunar month to the sixth day of the lunar month, the moon revolves around the earth to the east, so that the moon leaves the middle of the earth and the sun and deviates to the side, that is, the moon is located in the east of the sun. The half moon of the moon illuminated by the sun faces west, and a part of it can be seen on the earth in the shape of a sickle, convex facing the sun in the west, which is called the crescent moon.
3. From the seventh to the eleventh day of the first lunar month, as the moon continues to orbit the earth to the east, the relative positions of the sun, the earth and the moon become right angles, that is, the line between the moon and the earth and the line between the sun and the earth are 90°. Observers on Earth happen to see that the moon is bright in the western half, with the bright side facing west, and it is called the first quarter moon in a semicircle.
4. From the twelfth to the fourteenth of the lunar month, observers on Earth see that the west side of the moon is illuminated by the sun more than half, and the moon phase becomes a gibbous moon, and in the southeastern sky, the moon faces west.
5. From the fifteenth to the seventeenth day of the lunar month, the moon runs to the outer side of the earth, that is, the sun and the moon are located on both sides of the earth. Because there is an angle between the white plane and the ecliptic plane (the average value is 5°09), normally, the earth cannot block the daylight, and the bright side of the moon is all facing the earth, and people can see a bright moon, called a full moon or wang, located in the south sky.
6. From the eighteenth to the twenty-first day of the lunar month, the moon phase becomes a gibbous moon again, and the moon faces east.
7. From the 22nd to the 24th of the lunar month, the relative position between the Sun, the Earth and the Moon becomes a right angle again, and the Moon is 90° west of the Sun-Earth line. At this time, the eastern half of the moon is bright and semicircular, and the moon faces east, which is called the lower quarter moon.
8. From the 25th to the end of the lunar month, the moon phase becomes the Emei Moon again, with the bright face facing east.
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The moon has the following shapes: new moon, Emei moon, first quarter moon, gibbous moon, full moon, second quarter moon, second quarter moon, waning moon and other shapes.
1. New Moon: New Moon, also known as New Moon. The moon moves between the sun and the earth, facing the earth with its darkness, rising and sinking with the sun, and people cannot see it.
2. Emei Moon: The Momei Moon appears in the western sky in the evening of the beginning of the month, with the moon facing west and being sickle-shaped.
3. Winding: Appears in the first half of the first half of the moon, in the western sky, and the western half of the moon is translucent (the moon faces west).
4. Gibbous Moon: Most of the round surface of the moon is bright, called "gibbous moon" or gibbous moon before the full moon, also known as "upper gibbous moon", generally the day does not rise in the east before, and the next day before sunrise to the west.
5. Full moon: also known as the moon, at this time the earth is between the sun and the moon, the light of the whole moon faces the earth, only then can we see the full moon, the ancient people called this day "looking at the sun".
6. Lower gibbous moon: The gibbous moon after the full moon is also called "lower gibbous moon". Generally, the day does not rise in the east before, and the next day before sunrise in the west.
7. Lower Quarter Moon: Appears in the second half of the second half of the moon, in the eastern sky, with the moon facing east.
8. Waning Moon: The waning moon is at the dawn at the end of the month, appearing in the eastern sky, with the moon facing east. The so-called waning moon is like a hook, which is the most vivid depiction.
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The Sun is a star and the Moon is a satellite of the Earth.
The Sun is a star located at the center of the solar system, and it is almost an ideal sphere intertwined with hot plasma and magnetic fields. The diameter of the Sun is about 1,392,000 (kilometers, equivalent to 109 times the diameter of the Earth; It is about 1.3 million times the size of the Earth; Its mass is about 2 10 kilograms (330,000 times that of the Earth).
In terms of chemical composition, about three-quarters of the mass of the Sun is now hydrogen, and almost all of the rest is helium, including oxygen, carbon, neon, iron, and other heavy elements with less than 2% of the mass, which uses nuclear fusion to release light and heat into space.
The Sun is currently passing through the local interstellar cloud in the local bubble of the Orion Arm at the inner edge of the Milky Way. At a distance of 17 light-years from Earth, there are 50 of the closest star systems (the closest star to the Sun is a red dwarf called Proxima Centauri, about light-years).
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The Sun is a star and the Moon is a satellite of the Earth.
Stars are spherical or spheroid-like objects made up of hot gas that emit light on their own. Stars are all gas planets. On a clear and moonless night, the average person can see more than 6,000 stars with the naked eye.
Stars are not immobile, but because they are so far away from us that it is difficult to detect changes in their position in the sky without the help of special tools and methods, the ancients thought that they were fixed and immobile stars, and called them stars.
A satellite is a natural celestial body that orbits a planet and orbits periodically in a closed orbit, and an artificial satellite can also be called a satellite.
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