Video spoilers history, starting with the blitzkrieg on Poland

Chapter 458: The Border of the Solar System! The Heart of Pluto!

Finished reading about Li Yu's life.

It includes both the records in official history and the treatment he received after his surrender.

It also includes unofficial history of folk legends.

The story of Li Yu, Zhao Guangyi, Xiao Zhouhou and "Yu Meiren".

In the past, the ancients had a very strong prejudice against this king of a fallen country who was good at romance and love affairs.

It also gives me a relatively comprehensive understanding of Li Yu, the eternal emperor of poetry.

Li Yu was a king who lost his country.

This is true.

And his actions did not seem to reflect how capable he was as an emperor.

After all, Southern Tang had an army of 200,000.

If this configuration was given to Li Shimin, it would not only help to reverse the rise of the Song Dynasty.

At the very least, we can divide the river and govern it separately.

But to say that he was simply a tyrant would be a bit of an exaggeration.

Even though Li Yu was a king who lost his country, he did enjoy personal enjoyment.

But even Ying Zheng, who was very prejudiced against Li Yu at the beginning,
At this time, I can only sigh and say:

"What are Li Yu's specific abilities in governing a country?"

"Since Tianmu didn't give a more detailed account, I can't really judge."

"But one thing is certain, that is, Li Yu has a very clear understanding of himself."

"Having the ability to know oneself is also a skill."

"Whether it was because he kept a low profile before ascending the throne, or because he pretended to have no interest in the throne, he bided his time."

"It is better to kowtow to the Song Dynasty after ascending the throne to buy time."

"On the other hand, I haven't completely given into fantasy or deceived myself. While I'm groveling, I'm still working hard to prepare for the battle."

“Be able to recognize your own weaknesses and use reasonable diplomatic strategies.”

"He also knew that he still had to rely on the strength of his own country. Even after he fell to the Song Dynasty, the poem "Yu Meiren" showed his backbone."

"It proves that at the beginning, his flattery of the Song Dynasty was only due to the circumstances, and not because he was born a spineless person."

"In the end, the fall of the Southern Tang Dynasty cannot be entirely blamed on Li Yu."

"After all, the situation he took over was not only that of Li Yu of the Southern Tang Dynasty, but even if Li Shimin of the Tang Dynasty came here, he would be in trouble."

"I'm afraid it's difficult to change my fate."

Ying Zheng evaluated Li Yu's deeds based on what Tianmu told him.

This is also consistent with most ancient people's evaluation of Li Yu.

And a new sky soon appeared.

【The celestial body appears in front of you. 】

【It was once the ninth largest planet in the solar system. 】

【Pluto.】

[Pluto was once considered a planet, but was kicked out of the ranks of major planets and classified as a dwarf planet.]

[In order to kick Pluto out, astronomers have even developed a standard for what constitutes a planet.]

[To be called a planet, three conditions must be met. ]

[First, it must orbit the sun, and second, it must have enough mass to form a sphere. ]

[The third one is also the key to Pluto being kicked out of the ranks of planets. ]

[That means you must clear your own track. ]

[There cannot be other large celestial bodies within its orbit. ]

[Pluto's orbit is an ellipsoid, with a huge difference between its perihelion and aphelion.]

[The closest point to the sun is only 44 billion kilometers, and the farthest point is 73 billion kilometers. ]

[The key is that at perihelion, Pluto's orbit has entered Neptune's orbit. ]

[In addition, in the Kuiper Belt, where Pluto is located, astronomers have discovered other large celestial bodies similar to Pluto.]

[Some of these objects are even more massive than Pluto.]

[Therefore, Pluto was unanimously rejected by astronomers and was kicked out of the sequence of the nine planets. ]

[But despite being kicked out of the major planets, Pluto is still a hot topic in the astronomical community. ]

People's curiosity about him has only grown.

[As scientists continue to explore, the terrifying and strange aspects of Pluto are increasingly revealed to humans.]

[Although the planet Pluto has been discovered for nearly 100 years. 】

[But it wasn’t until 10 years ago that humans got the first high-definition photo of Pluto.]

[According to the latest research, Pluto is an extremely cold planet, just like its name, it is chilling. ] [Where Pluto is, it must not be very bright! ]

[This is easy to understand, because Pluto is so far away from the sun. ]

[The light from the sun needs to travel at the speed of light for 5 and a half hours to reach Pluto.]

[Under these circumstances, the amount of light and heat Pluto can receive is very limited.]

【The average surface temperature reached minus 225 degrees. 】

[At such extreme low temperatures, oxygen will freeze into a solid state and fall from the sky.]

[And the surface of Pluto is undoubtedly a completely frozen planet. ]

Outside the sky.

The ancients knew.

With our current level of technology, there is no point in studying Pluto.

But what the ancients didn’t know was.

Even if the technology level of modern humans is reached in the future,

Studying Pluto.

Basically... it has no practical value.

However, despite knowing that it was useless, ancient people still watched these astronomy science videos with great interest.

Liu Bang watched the demonstration video images of Pluto on the sky with great interest.

While toasting a glass of wine to the sky,

Said:

"Pluto, you little bro, you were originally a good planet, but you were classified as a planet by later generations of humans."

"Just row it, you'll be kicked out again in less than a hundred years."

"It has turned into a dwarf planet. Who can you complain to?"

Liu Bang said happily, and then thought for a moment.

A little more seriously:

"But compared to your planet's lifespan of billions or even tens of billions of years."

"The definition of human beings is too small to be worth mentioning."

"In my opinion, don't look at those astronomers in later generations, who define Pluto as a planet one moment and then kick it out as a dwarf planet the next."

“But to be frank, Pluto doesn’t care.”

"Star doesn't care!"

[Although Pluto is ancient, it is still a planet with very active geological activities. ]

[Most of the mountains on its surface are less than 1 million years old, which is very young.]

[Logically speaking, the solar system has been formed for billions of years, and Pluto's magnetic field should have been exhausted. It shouldn't continue to be active like this. ]

[But Pluto has very active geological activities. ]

[This aroused the curiosity of astronomers. ]

[And soon, people discovered the secret of Pluto's continued activity. ]

[That is, near Pluto, there is a satellite called Charon. ]

[This satellite of Pluto is half the diameter of Pluto and has a mass that is more than 12% of Pluto. ]

[Compared to Pluto, Charon is really too big. In the entire solar system, it is one of the satellites with the highest proportions compared to the planets. ]

[Because Charon is too large, Pluto cannot be the center of mass of Charon. The center of mass of these two planets is actually not located inside Pluto, but in space. ]

[This causes Charon to be tidally locked to Pluto while Charon's gravity is also pulling on Pluto's geological structure.]

[This causes Pluto's geological activities to be very frequent. ]

The sky paused for a few seconds, giving another panoramic view of Pluto.

[If you look at the surface of Pluto from space, one of the biggest features is that there is a heart-shaped "ocean" on the surface of Pluto. ]

【It is called the Heart of Pluto.】

[It looks very romantic. ]

【But it’s actually very scary. 】

[Because scientists speculate that this is a depression formed after Pluto was hit by a cosmic body. ]

[Over the long years, the depression was covered with ice and cosmic dust. ]

【Thus forming a heart shape.】

[Even the impact craters are in the shape of love for you! ]

[But we must also realize that behind such a large impact crater is a huge impact that could almost destroy the planet. ]