As my country's deep space exploration industry continues to achieve remarkable results and has a deeper understanding of the moon, some popular science knowledge about the moon is refreshing and has benefited a lot.

Red Net Moment News Reporter Dai Ke Changsha comprehensively compiled reports

Blessed friends who love astronomy! November 8th will usher in the second total html May eclipse of in 2022. It is even more rare that the rare astronomical phenomenon of the moon covering the Uranus will be staged at the same time. This opportunity is once a lifetime.

Throughout history, the mythological story of " Chang'e Running to the Moon" has made people have endless yearning and curiosity about the moon. As my country's deep space exploration industry continues to achieve remarkable results and has a deeper understanding of the moon, some popular science knowledge about the moon is refreshing and has benefited a lot.

"I don't know the moon when I'm in my hour, and I call it a white jade plate." From the appearance alone, the moon looks like a flat "white jade plate" and "Jaotai mirror". In ancient times, people often wrote poems on the title of the moon, but they didn't know much about the moon. They believed that the moon was an extremely cold place, and they were called " Guanghan Palace ".

Watch the moon, and the ancients especially liked the moon

Unsatisfied things are often eight times, and they can talk to others. Throughout history, the moonlight that everyone can appreciate has become the only choice for far-reaching thoughts and expressing their feelings and aspirations.

Quiet Night Thought Picture ( Chinese Painting ) Dai Dunbang . Image source: Guangming Daily

"Look up at the bright moon, bow down to think of your hometown", "People have joys and sorrows, the moon has phases and waxing", "The bright moon rises on the sea, and the world shares this time"... There are countless famous quotes that have been passed down to this day and are popular.

Although this is true, the ancients' research and exploration of the moon never stopped, which not only gave birth to the romantic myth of "Chang'e Flying to the Moon", but also achieved many scientific insights and achievements.

For example, the ancients called the rise of sea water in the morning as tide and the rise of dusk as tide, collectively known as tide or sea tide. They believed that this phenomenon has some mysterious relationship with the moon, and many ancient poets have vivid descriptions of this. For example, in " Spring River Flower Moon Night , a poet of the Tang Dynasty, wrote the famous line "The spring river tide is connected to the sea level, and the bright moon on the sea is born together".

tidal power generation turbine. Source: CCTV News

"The rise of the waves follows the rise and fall of the moon." Eastern Han Wang Chong also pointed out in "Lunheng·Shuxu" that the rise and fall of the tides occur with the movement of the moon. The "Haitao Zhi" written by Dou Shumeng clearly put forward the synchronization principle of "the tides are waves, and they must be in line with the moon". It calculates based on changes in the moon's round and waxing, and creates a calculation chart for high and low tides.

The "lunar calendar" algorithm we often use now also uses the moon as the medium. The moon went from full to waning, and then from waning to waning. The ancients applied the results of observation and research on the moon to the compilation of the lunar calendar.

The lunar calendar mainly refers to a calendar arranged according to the changes in the moon phase cycle, that is, the changes in the moon's round and waning.

In the lunar calendar, the first day of each month is the new moon; 7th day and 8th day are the crescent moon ; 15th, 16th or 17th is the full moon, which is the day of looking at the moon; 22th and 23th is the crescent moon ; 29th is the dark moon, etc. After calculating that the moon changes in a round and waning manner, it takes about 30 days, so the lunar month and is used as the basis for determining the calendar month, and a year is divided into twelve calendar months.

, do you know these knowledge points?

Do you really know the moon? Let’s take a look at these common sense together, do you know?

With the advancement of science and technology, people's understanding of the moon has become more and more comprehensive. The moon, commonly known as the moon, is the only natural satellite on Earth. It is the fifth largest satellite in the solar system, and the average distance from the earth is about 380,000 kilometers.

The interior of the moon is composed of the lunar core (radius 700 kilometers), the lunar mantle (radius 1000 kilometers) and the lunar crust (thickness 70 kilometers), which is similar to the earth. Due to the lack of an atmosphere, the rocks on the surface of the moon are frequently impacted by various small celestial bodies, forming a layer of lunar soil with a thickness of about 3 to 20 meters.

Nowadays, people often use the astronomical telescope to observe spectacular and interesting astronomical phenomena such as moon phases, lunar eclipses, super moon , red moon, and lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar lunar

Mid-Autumn Festival, the bright moon is in the sky. If you think the moon will shine, you are wrong! The moon shines by reflecting sunlight, and its relative position is different from the sun ( yellow etiology and poor), presenting four main moon phases: new moon, upper crescent moon, full moon, and lower crescent moon.

"Tiangou Eats the Moon" is actually a lunar eclipse. The ancients did not understand this before, so the moon was eaten by dogs. Lunar eclipse is a phenomenon in nature. When the sun, the earth, and the moon happen to be or are almost on the same straight line (the earth is between the sun and the moon), the light from the sun to the moon will be partially or completely covered by the earth, resulting in a lunar eclipse.

Super moon is often the object of pursuit by photography enthusiasts, so how did the super moon form?

The largest "super moon" in 2022 debuted in the night sky. Source: CCTV News

In fact, the orbit of the moon orbiting the earth is not circular, but elliptical. It is measured that when the moon is located perigee, the average distance from the earth is 363,000 kilometers, while when it is located in average, the average distance is 406,000 kilometers, the difference between the two is 10.41%. When the moon is perigee, it is the best time to observe a supermoon.

In ancient times, people called the moon "Guanghan Palace", which is not an exaggeration, but in addition to cold, there are also high temperatures on the moon, and the temperature difference between day and night is huge. There is almost no atmosphere on the surface of the moon. After the atmosphere adjusts the temperature, the moon will experience frequent cold and hot conditions, and the temperature difference between day and night can reach more than 300 degrees.

Myths also often say "One day in the sky, one year in the human world". Although it is not this, the day on the moon is indeed very long. Compared with the Earth, the moon is "slow-tempo" and it rotates for 708 hours a week. In other words, a day on the moon is equivalent to 29.5 days on the earth. Moreover, because the moon orbits the earth in and the time it takes for to rotate for the same week, the moon always faces the earth with the same side.

Moon exploration, "Chang'e Project" three-step

With the continuous development of China's deep space exploration industry, especially the implementation of the "Chang'e Project", my country's "lunar exploration" achievements have made leapfrog development, attracting attention around the world.

In 2004, China officially launched a lunar exploration project and named it the "Chang'e Project". The Chang'e project is divided into three stages: "unmanned lunar exploration", "manned lunar landing" and "establishing a lunar base". Among them, the first stage of "unmanned moon exploration" is divided into three steps: "orbiting", "falling" and "returning".

Now, let’s follow the timeline to learn about our country’s “Chang’e Project”.

.5 million full-month geological map thumbnail. Image source: CCTV News

At 18:03 on October 24, 2007, Xichang Satellite Launch Center launched my country's first moon-orbiting artificial satellite Chang'e-1, officially taking the first step in my country's lunar exploration. According to the precious data taken by Chang'e-1, my country has constructed a three-dimensional three-dimensional model of the moon. After

, my country launched Chang'e-2 . In addition to the mission of orbiting the moon, Chang'e-2 is also responsible for obtaining higher resolution three-dimensional images and element distribution maps of the lunar surface, detecting the space environment of the earth and moon and near-moon, and preparing for the future soft landing of the lunar 5 Chang'e-3 .

On December 2, 2013, Chang'e-3 is here! It shoulders the heavy responsibility of "measure the moon, patrolling the sky, and observing the earth". After two days of flight, Chang'e-3 successfully achieved a soft landing on the moon on the 14th, becoming my country's first probe to achieve soft landing of extraterrestrial celestial bodies.

In the early morning of December 8, 2018, Chang'e 4, carrying Yutu 2 , took off. On January 3, 2019, it landed on in May, becoming the world's first detector to land on the back of the moon.

Chang'e-5 lunar work diagram. Image source: National Space Administration

At 4:30 on November 24, 2020, Chang'e 5 took off at the Wenchang Space Launch Site, starting China's first extraterrestrial celestial sampling return journey. On December 1, the Chang'e-5 probe successfully landed in the pre-selected landing area on the front of the moon.

On December 17, 2020, the Chang'e-5 returner carried lunar samples, reentered and returned using a semi-ballistic jump method, and landed safely in the pre-determined area of ​​Siziwang Banner, Inner Mongolia, Siziwang Banner, .

Go to the nine heavens and ask the sky, our journey is the sea of ​​stars!

With the continuous improvement and improvement of my country's deep space exploration technology, I believe that "manned moon landing" is coming soon. Let us look forward to the "running to the moon" come true together.