moon lunar halo
The lunar ocean on the moon
The lunar sea was a flat terrain with few craters on the moon. It looked black and was made of black lunar sea magma. There was no liquid in it. There were a total of 22 lunar seas on the moon. Except for the East China Sea, the Moscow Sea, and the Zhihai Sea on the back of the moon, the remaining 19 lunar seas were distributed on the front of the moon, accounting for about 17% of the lunar surface area. In 1609, when the Italian scientist, Galilei, first observed the moon with a telescope, he speculated that there were many " dark " areas on the moon and named them " lunar seas." On the basis of the 1982 classification, the International Astronomical Union divided the lunar topography into three types: crater, lunar ocean, and lunar land. There were many theories about the origin of the lunar ocean, such as nebula theory, magma theory, impact melting theory, volcanic activity theory, etc., but there was no conclusive conclusion at the moment. Most of the Moon Seas were circular and enclosed, with a low elevation, flat terrain, and small changes in slope, just like a wide plain. Research had shown that the lunar ocean was almost entirely composed of heavy metals, and it was rich in rare metals such as titanium, iron, Chromite, Zirconium, Yttriumum, and Besium. In addition, Chang'e-6's research results showed that volcanic activity also existed on the back of the moon. This discovery helped to further understand the formation of the lunar ocean and the evolution of the moon.
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2026-04-03 07:02
Use of Stellar Moon and Lunar Moon
The sidereal month was the period of the moon's orbit around the Earth (with the background of the stars as a reference), and the duration was about 27.32 days. It had many uses:
- In ancient times, the cycle of the stars affected the calendar. For example, the ancients divided the stars into 28 constellations according to the cycle of the stars. The moon appeared in one constellation every day, so the lunar calendar was formulated. The small moon had 28 days and the big moon had 27 days.
- It determined the latitude of the moon's tidal force (the lunar month determined the magnitude and time of the tidal force). The tidal force had an impact on the atmosphere, ocean, crust, and magma inside the Earth, which in turn affected tidal phenomena. As a creature in the Earth's biosphere, humans were also affected by the tidal force of the moon.
- The ancients recognized that the stellar month was related to a woman's menstrual cycle. The 7-day rhythm of a quarter of the stellar month had an impact on humans, animals, and plants. A woman's pregnancy lasted for 10 stellar months. Perhaps they also knew that the 60-stellar month semi-constant cycle had a greater impact on natural disasters such as climate, diseases, earthquakes, and extreme temperatures.
The lunar month was the average period of the moon's revolution around the earth relative to the sun. It was the average period of the moon's phase, with an average of 29.53 days. Its uses were as follows:
- It was the basis of the lunar calendar in our country. Our ancestors called the day when the moon could not be seen at all "New Day", which was the first day of each lunar month. The day when the moon was the roundest was called "Wangri", which was the fifteenth (or sixteenth) day of each lunar month. From the new day to the new day, it was a month of the lunar calendar.
- The lunar month determined the magnitude and duration of the tidal force on the moon (the stellar month determined the latitude of the tidal force). The tidal force would affect many natural phenomena and organisms on Earth.
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2026-06-18 18:43
The 22nd moon of the lunar calendar
The moon around the 22nd of the lunar calendar was the last quarter of the moon. The last quarter moon rose around midnight and set around noon. From the northern hemisphere, the left half of it was illuminated, forming a semicircle.
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2026-02-22 01:18
Lunar Calendar 24 Moon Phase
The moon on the 24th day of the lunar calendar was the waning moon, also known as the crescent moon in the second half of the month. It appeared in the eastern sky at dawn and after midnight.
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2026-02-19 18:57
The moon is on the 20th of the lunar calendar
On the 20th day of the lunar calendar, the moon had entered the last quarter of the moon. At around 9:30 p. m., it was shaped like a large piece bitten by a Tengu. It was a half-moon on the lower right and slowly appeared on the eastern horizon. At noon, the sky was about to brighten. When the sunrise three rods, he could still see it clearly when he looked up at the southwest sky.
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2026-02-19 09:17
The moon on the 25th of the lunar calendar
Since there was no clear indication of the lunar calendar's 25th, it was impossible to give an exact state of the moon on that day. Generally speaking, the 15th day of each lunar month was a full moon. After that, the moon gradually waned. At the 25th day of the lunar month, the moon was in a state of deficiency, close to the last quarter of the moon. However, due to factors such as the moon's revolution period, its specific position in the sky, brightness, and other conditions would be different.
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2026-02-14 01:29
The moon in the twenties of the lunar calendar
The moon on the 20th day of the lunar calendar had entered its last quarter. On the 20th day of the lunar calendar, the moon was in the lower right half of the moon, as if the Tengu had bitten a big piece on it. On the twenty-second and twenty-third days of the lunar calendar, one could see half of the moon facing east. After another four or five days, the moon would turn into a crescent moon with its back facing the rising sun. Finally, it would move between the sun and the earth and become a new moon.
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2026-02-15 03:15
The moon on the 20th of the lunar calendar
The moon on the 20th of the lunar calendar had entered the last quarter of the moon. Its shape was about a half-moon on the lower right. At around 9:30 p. m., it would slowly appear on the eastern horizon as if it had been bitten by a Tengu. When it reached the west of noon, the sky would be bright. When the sunrise three rods, it would still be clearly visible in the southwest sky.
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2026-02-07 19:00
( ) of the lunar calendar is the new moon
The first day of each lunar month was the new moon. On the day of the new moon, the moon moved between the sun and the earth. Its dark hemisphere faced the earth, and the moon could not be seen from the earth. At this time, the moon's ecliptic and the sun's ecliptic were in the same straight line.
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2026-04-18 23:40
The lunar ocean on the moon is actually
The Moon's Mare referred to a flat terrain with few craters and looked black. It was made of black Mare Basalt and there was no liquid here. The lunar seas accounted for about 17% of the lunar surface area, and there were 22 of them on the surface of the moon. Except for the East China Sea, the Moscow Sea, and the Zhihai Sea on the back of the moon, the other 19 lunar seas were distributed on the front of the moon. There were many theories about the formation of the lunar ocean, such as nebula, magma, impact melting, volcanic activity, etc., but there was no conclusion yet. Research had proved that the materials in the lunar ocean were almost all made of heavy metals, which were rich in rare metals such as titanium, iron, Chromite, Zirconium, Yttriumum, and Besium.
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2026-04-12 19:48
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