I make a popular science video and all the emperors learn from it!

[Popular science continues.] 】

[After mankind successfully landed on the moon, the imaginary Tiangong and Chang'e did not see it. 】

[On the contrary, there are potholes all around.] 】

[This is because there are a large number of basalt lava flows ejected from dark volcanoes and huge impact craters on the front side of the moon, forming a vast ~ plain. 】

[Called "Moon Sea."] 】

[Actually, in the "Moon Sea", there is not a drop of water - there is none.] 】

[Between the outer and the moon sea, there are bright, ancient plagioclase highlands and striking impact-craters. 】

[It is the brightest object in the sky other than the Sun, and although it appears very bright white, its surface is actually very dark.] 】

[Because the moon is very conspicuous in the sky, coupled with the regular changes of the moon phases, it has had a significant impact on human culture such as myths and legends, religious beliefs, philosophical thoughts, calendar compilation, literature, art, and customs and traditions since ancient times. 】

【......】

[The Moon's rotation is equal to the period of its revolution (called tidal locking), so the Moon always faces the Earth on the same side.] 】

[In other words, human beings can only see one side of the moon when they stand on the earth.] 】

【......】

【Orbital motion of the Moon:】

【Revolution:】

[The Moon orbits the Earth in a circular orbit. 】

[Rotation:]

[The Moon rotates while revolving around the Earth, with a period of 27.32166 days, which happens to be a sidereal month, so we can't see the far side of the Moon. 】

【...】

[Because of the motion between the planets, some strange astronomical phenomena can also be explained.] 】

【Lunar Eclipse Phenomenon:】

A lunar eclipse is a special astronomical phenomenon. 】

[Refers to the fact that when the moon travels behind the shadow of the earth, the sun's rays are obscured by the earth.] 】

[That is, the Sun, Earth, and Moon at this time happen to be (or almost) in the same straight line, so the light from the Sun to the Moon will be obscured by the Earth.] 】

【Double Stars with the Moon:】

[In the early morning of February 8, 2024, Venus, Mars, and the Moon will perform a "double star with the moon" celestial phenomenon in the low southeast. 】

【...】

[And the rotation and revolution periods of the Earth and the Moon are different, and another phenomenon will be formed.] 】

[The rotation of the earth is about 24 hours. 】

[That is to say, one day of the earth is equal to the time it takes for the earth to rotate for one time.] 】

[Because of the influence of gravity on the moon, one side of the moon is always facing the earth, and the image is a little watery, that is, the earth locks the moon, just like a car pulling another car with a tow rope, when the earth is turning, it will also drag the moon to rotate. 】

[One side faces the earth, and the other side must face the sun.] 】

[To put it simply, the rotation time of the moon and the revolution are exactly the same, scientists have found that the rotation period of the moon is about 1 month, and the rotation time of the moon is also about a month. 】

[In this way, a day on the moon is a month on the earth.] 】

[Although there are some discrepancies with the ancients' saying "one day in the sky and one year underground", it is also very similar. 】

【......】

"What? There are no fairies on the moon, and there is no fairy palace, I don't believe it. "

"Impossible, absolutely impossible! There is definitely a fairy Chang'e on the moon, who must live on the far side of the moon, on the side facing the sun!"

"It's fake, it's all fake, it must be the immortals on the moon who used a spell to keep people from discovering their existence. "

"Incomprehensible! Unacceptable!"

“......"

The direct mentality of the ancients exploded.

They are completely unacceptable to such an outcome.

Qin Dynasty.

Li Si took two steps forward and looked at his majesty worriedly.

There is no other reason.

I'm afraid that His Majesty won't be able to stand it later.

Sure enough, Ying Zheng looked up to the sky and exclaimed sadly: "Impossible! It shouldn't be like this, the widow doesn't believe it." "

As much hope as there is, there is as much disappointment as there is.

Not to mention the elixir, according to the meaning of the light curtain, there is not even a figure on the moon!

There are only a few potholes on it, and there is not even water.

Ying Zheng shouted, and fell into a long silence.

Han dynasty.

Liu Che muttered in a frustrated tone, "The elixir... Nope. "

"My hope for immortality is gone. "

Although I was prepared, the moment the answer was really revealed, it was still heart-wrenching.

Many ministers looked at Liu Che, not knowing whether to be happy or worried.

Happily, after this incident, His Majesty has completely given up the idea of immortality, and it is time to focus all his energy on governing the country and the people. (If you read a violent novel, go to Feilu Novel Network!)

The worry is that such an excellent emperor will not be able to live forever, and the loess will be handful after a few decades.

Tang dynasty.

Yuan Tiangang came to Li Shimin and saluted.

"Your Majesty, I don't know what to do with the minister?"

shouted, and he found that there was no movement for a long time.

Then he whispered, "Your Majesty?"

Still no response.

He boldly raised his head and found that Li Shimin was looking at the light curtain.

Yuan Tiangang couldn't help but sigh in his heart.

How difficult it is to live forever, it is better to live the present life.

Another period.

The eunuch said loudly: "Your Majesty, all the monks in the city have been recruited. "

And Wu Zetian didn't seem to hear it. []

After a long time, the eunuch who spoke felt that his waist was about to break, and only then did he hear a reply.

"Let them all go back. "

"Yes!" the eunuch did not dare to ask more, and prepared to let the waiting monks leave the palace.

Ming dynasty.

Jiajing Emperor Zhu Houxi pounced and sat on the ground.

The whole person was depressed.

"Hahaha, it's fake, it's all fake, immortality is fake, cultivation is fake, even myths and stories are fake..."

He was like a deflated ball.

Directly lose the purpose of life.

Unlike ordinary people and emperors who longed for immortality.

Astronomers of all dynasties and generations are even happier than the Chinese New Year!

It's almost like beating gongs and drums.

Eastern Han Dynasty.

Zhang Heng happily wrote down the popular science content on the light curtain word for word.

While recording, he muttered: "I see, I see, I understand." "

Such a scene is not accidental.

Northern and Southern Dynasties period.

Zu Chongzhi stroked his beard and sighed: "The earth and the moon under your feet are all a huge ball. "

"Not only do they spin on themselves, they also revolve around other things..."

"Why is that?"

He was a little confused.

He wasn't particularly good at astronomy.

In comparison, he is more gifted in mathematics.

The book "Fixation" written by him was included in the famous "Ten Books of Calculation".

As a textbook for the supervision of the Tang Dynasty.

It is also calculated that the true value of pi is between 3.1415926 and 3.1415927, which is equivalent to the 7th decimal place and . . .