Video spoilers history, starting with the blitzkrieg on Poland

After a short break, a new canopy appeared.

On the canopy.

A vast starry sky appeared.

The first sentence raises a thought-provoking question.

[What is the end of the universe? What is the end of time? ]

【We know that the universe is infinite. 】

【Humans may never know how big the universe is. 】

【We also know that the time of the universe is infinite. 】

【Humans may never know how long the universe will last. 】

【But everything has an end, even time, even the universe has an end. 】

【Then at the end of the vastest space in the universe. 】

[What will it be like at the end of the longest river of time? ]

【Let’s start from now. 】

【Take a look at the possible endings of the universe. 】

[We humans live on Earth now, but 5 million to 10 billion years from now, as the intensity of radiation on the sun's surface increases, the sun's brightness will also increase by 10%. ]

[Although it is only 10%, it is already a burden of life that the Earth cannot bear. ]

[The temperature of the Earth's surface will also rise accordingly, becoming no longer suitable for life to survive, and the Earth will become the second Mars. ]

[The earth's surface will inevitably become desertified, carbon dioxide will merge with rocks, the ocean will completely dry up, and the planet will completely become desertified and become a desert planet. ]

[Until 50 billion years later.]

[The Sun, which has run out of hydrogen inside, will begin to expand into a red giant. ]

[The expansion is very exaggerated! ]

[Within the orbit of Mars,]

【All celestial bodies, including the Earth, will be swallowed by the expanding Sun. 】

【From 50 billion years ago to 60 billion years ago. 】

【The sun has now turned into a planetary nebula. 】

[And in the central region of the sun, there will be a white dwarf core that looks very small. ]

[Most of the eight planets will be swallowed up by the nebula that the sun has transformed into, leaving only a few gas giant planets on the outermost edge.]

【And the sun will stop expanding. 】

【It eventually becomes a tiny white dwarf. 】

The sky tells a bleak ending for the solar system.

And it is accompanied by corresponding animation demonstrations.

There is scientific speculation that the sun will expand and become a white dwarf.

In fact, I have also talked about this on the sky screen before.

Many ancient people, especially those interested in astronomy, still remember it.

But remember it.

But even an astronomer like Zhang Heng had firmly memorized all the cosmic astronomical knowledge that Tianmu had previously taught him.

But at this time.

He saw the solar system expand again,

The entire solar system will be destroyed.

I couldn't help but feel lost.

Although Zhang Heng also knew that this loss was unreasonable.

The end of the universe has no impact on the present world, or even the foreseeable future of the entire China and the entire earth.

It's completely groundless worry.

But this is the charm of cosmic astronomy.

Looking up at the night sky, Zhang Heng couldn't help but have a lot of thoughts.

Continue looking at the sky.

【The solar system has reached its final end.】

[But there is no time to mourn for the solar system, because our Milky Way galaxy will meet its end next.]

[Because at this time, the gas reserves in the Milky Way will also reach their limit. ]

【The Milky Way will no longer be able to produce new stars. 】

【There is no new life, only aging and death. 】

[More and more stars are entering their old age and expanding, becoming red giants.] [In astronomical maps, the Milky Way, which was originally pure white and shining, even pure white to the point of blinding, will turn into a terrifying crimson.]

[Scientists also speculate that in 100 trillion years, all the stars in the universe will be extinguished.]

[The remaining celestial bodies in the universe will basically be white dwarfs, neutron stars and black holes. ]

[The remains of these former planets are like the corpses that have become bones on an ancient battlefield.]

[It tells and records the glory of the universe in the past. 】

[But even a powerful black hole cannot escape time.]

[According to Hawking's theory of black hole evaporation, the quantum effect at the edge of the black hole's event horizon will continuously take away the mass of the black hole, creating an effect similar to evaporation.]

[Black holes that cannot get energy replenishment continue to evaporate and lose mass. ]

[It will eventually evaporate completely and disappear into the universe. ]

[The rest of the neutron stars and white dwarfs cannot undergo nuclear fusion reactions themselves. ]

[The light and heat they release will eventually come to an end.]

[After all the light and heat are released, they will become completely black celestial bodies without any light. ]

【Black dwarf.】

[Black dwarf is the ultimate celestial body in stellar evolution. ]

[From the birth of a star, to its maturity, to its aging, until it finally evolves into a black dwarf that cools down to the point where it emits no light or heat.]

[Because white dwarfs are very stable and have a strong heat preservation effect, it would take 200 trillion years or even 1000 trillion years for a white dwarf to completely stop emitting light or heat.]

[Although the current age of the universe is only 137 billion years. ]

[But 200 trillion years is not too far-fetched for the universe.]

[At that time, the universe was left with only these cold, non-luminous celestial bodies.]

[There may be many rocky or metallic planets orbiting the remnants of these former stars.]

[However, since they cannot reflect light from stars, even if there were humans at that time, they would not be able to see them at all. ]

【The universe will become even colder and darker.】

[The entire universe that was once full of stars is now filled with despairing darkness and coldness. ]

【It is absolute darkness.】

【Darkness without any light.】

[The heat originating from the Big Bang has also disappeared, and the entire universe is left with only darkness and coldness.]

【Heat death.】

……

The sky provides a pure black universe.

First there was total darkness.

But in order to make it visible to people, the video has slightly increased the brightness so that people can see what is hidden in the absolutely dark universe.

The remains of a completely dead planet.

It can be said that this is the absolutely dark ending of the universe.

It looks very desperate.

Even Qin Shi Huang Ying Zheng was annoyed by it.

I couldn't help but sigh:
"They say that immortality is as long as the heavens."

"But even this day has an end. Maybe nothing is eternal."

Of course, Ying Zheng’s emotion here is only an emotion after he has learned the theoretical knowledge of cosmic astronomy, a kind of emotion after mastering the knowledge.

It’s not that Ying Zheng really had the foolish dream of living as long as the heaven and earth, or even living for tens of millions, hundreds of millions, or even trillions of years like the universe.

However, Ying Zheng now also feels that.

Even the universe has an end.
How is it possible for humans to truly live forever?
I just hope that I can prolong my life, which would be very exciting.

Fusu, who was standing aside, was watching with great interest.

Although Fusu knew that learning these astronomical knowledge was really useless to the Qin Dynasty.

But I just couldn't help but watch it very seriously.

I couldn't help but want to watch it again.

"If you think about it carefully, the more you think about it, the more frightening this universe becomes, but at the same time, the more fascinating it becomes."

"Is this absolutely dark universe, heat death, the end of the universe?"

Basically, most of the ancient people, including Fusu, also confirmed this after seeing the dark universe in the video.

This is the end of the universe. (End of this chapter)