Video spoilers history, starting with the blitzkrieg on Poland

When the video ends,
Netizens also gave sharp comments on this science fiction video.

"Saving Flow: Earth Becomes Venus."

"Real estate company: I wouldn't even dare to dream of this."

"Without the sea, it doesn't matter much, I drink mineral water and it's the same."

"If all the seawater disappears, humans will not survive for more than two hours."

"If the ocean disappears, the Earth will be completely destroyed."

《Earth: Haha, I have nothing to worry about without seawater, and I even eliminated the parasites.》

"The disappearance of the ocean is inevitable. What's so strange about it? Isn't that how the Earth came to be?"

And the Ming Dynasty.
Zheng He saw this. He couldn't help but smile and said:
"Well, at first I was asking whether humans could survive after the sea water disappeared."

“Does this even need to be asked?”

“Humans really cannot live without the ocean.”

"What I didn't expect was that I originally thought that the disappearance of the sea water would mainly cause the world to become dry, and that drought would trigger a series of chain reactions."

"I didn't expect that the reaction after the sea water disappeared would include severe cold, earthquakes, fires, strong winds and so many other types of super disasters."

“Who could have imagined that the sea would disappear.”

"It may even lead to a global volcanic eruption!"

……

And the new canopy.

It is also a canopy related to the ocean.

【We know that the ocean occupies more than 70% of the Earth’s surface area. 】

[It far exceeds the proportion of land. ]

[All the ocean water on Earth combined accounts for 13.5 billion cubic kilometers.]

【Have you ever thought about the vast ocean and the huge amount of water on the earth?】

Where does this water come from?

The question raised by Tianmu immediately triggered widespread thinking among the ancient people.

Northern and Southern Dynasties.

The famous geographer Li Daoyuan saw this problem.

Subconsciously, I looked towards the river next to me.

“Water comes as rain from the sky.”

“And the source of a river is usually high in the mountains.”

"Rivers, big and small, all flow into the sea."

“Some water comes from rain from the sky.”

"Some are snow water and glacier melt."

“Some of them are from groundwater.”

As a geography expert, Li Daoyuan had a relatively rich and thorough understanding of rivers and mountains in his time.

But after talking to himself for a few words.

Li Daoyuan still said with great doubt in his heart:

“Although I know what the source of the river looks like.”

"But where does this water come from?"

"Glacier water, where does the glacier water come from?"

“The rain in the sky, where does the rain in the sky come from?”

"Not to mention the vast ocean!"

"Are all of them really produced by the water from rivers and streams that have been poured in for billions of years?"

“I haven’t thought about this question before.”

“But if you think about it carefully, I think this question is a bit serious.”

“Feeling is a great question.”

Li Daoyuan, an expert in geography, was completely interested and watched with great anticipation.

It can be said that the question is how water comes from.

With the level of knowledge of the ancients, it was completely impossible to answer.

Can't even think.

The more I think about it, the more confused I become.

While being confused, it will naturally arouse stronger curiosity.

In the hearts of the ancient people with strong curiosity, the sky screen video continued to play.

【We know that the Earth is not actually a water ball. 】

【The Earth is essentially a rocky metal planet. 】

[In the early days of the Earth, geological activity was extremely intense, and the entire Earth was a molten hell filled with high-temperature magma.]

[Under this circumstance, it is naturally impossible to retain water. ]

[That is to say, we can be sure that there was no water on Earth in its early stages.]

[In other words, even if there was water, it would have already evaporated.]

【If we want the earth to have an environment that can store water. 】

【First of all, it takes time for things to slowly settle down. 】

【It will make the Earth's geological movement less intense and allow it to cool down slowly and steadily.】

[Well, after billions of years of changes, about 40 billion years ago, the Earth began to cool down.]

[The earth is now more stable, the temperature has dropped, and it can store water. ]

【But the Earth doesn’t have much water right now. 】

[So how can we make the dry rocky planet, Earth, have water? ]

[Even having a huge ocean covering most of the Earth's surface? ]

[There are actually many speculations about the source of water. ]

[For example, it rained before.] [Has it rained for millions or tens of millions of years?]

[Scientists speculate that it was 500 to 600 million years after the birth of the Earth.]

【As the Earth gradually cooled, its environment became stable.】

[In the early years, due to violent geological activities, a large amount of water vapor was produced and entered the primitive atmosphere. ]

【As the atmosphere condenses and takes shape. 】

[Raindrops fell for the first time on this young planet that was only a few hundred million years old.]

【However, at this time, the surface temperature is still very high. 】

[It is estimated that it may reach over 70 degrees. ]

[As a result, the early rain evaporated back into the air before it could even reach the Earth.]

[But the water did not disappear, it just turned back into water vapor. ]

[After returning to the atmosphere, it will condense into water again and participate in a new round of rainfall. ]

[This is a long-term cycle of continuous rainfall, evaporation, rainfall, and evaporation.]

【Billions of years have passed.】

【The Earth also cooled further.】

[It has finally cooled down to a level where the liquid water will not evaporate.]

[With the early rainfall finally falling to the ground, the primitive ocean finally appeared on the surface of the earth. ]

The sky curtain tells the story while coordinating with the pictures.

It can be seen that in the chaotic primordial earth, the whole world was restless.

As time goes by,
The restless primitive earth gradually calmed down and cooled down.

The entire surface of the planet is barren.

And after who knows how many years, a drop of water fell from the sky and wet the sand and dust on the ground.

First, a drop of rain.

Then came the heavy rain!
These earliest rains on Earth rolled and gathered on the surface of the Earth, and finally poured into the depressions.

The early ocean was formed.

Although this scene is just a simple CG demonstration and is not accompanied by any emotional and moving commentary.

But just seeing the original earth, the shocking scene full of chaotic power.

And the power of life brought by the first drop of water falling after the purgatory on earth.

It's enough to shock people!
I was moved after watching it!

But despite being moved, the ancient people still had doubts.

So where does the water come from?

Li Daoyuan pointed to the picture on the sky curtain and said doubtfully:
"According to the explanation of the sky tent, the water on the ground evaporates into the air, condenses into rain, and falls to the ground again."

"Then this process, no matter how long it lasts."

“The total amount of water remains constant.”

"If we say that the Earth had only a tiny amount of water at the beginning."

"Then this little bit of water will evaporate and rain over and over again."

“In the end, it’s just a tiny bit.”

"But I know that the earth's oceans are extremely vast."

"So where does all this water come from?"

And in the Tang Dynasty.

While Li Bai was watching the sky, he was also making his own guesses.

"The water of the Yellow River comes up from the sky."

"But according to the narration of the sky, this water from the sky is from the earth itself."

"So is there more water in the sky above the Earth, in the universe?"

"Could it be that the water of the Yellow River does not only come from the sky?"

"The water for the entire Earth also comes from higher places in outer space?"

Not only Li Daoyuan and Li Bai had this question.

The ancients of all ages,

This also includes many viewers of the barrage, who also have similar doubts.

Fortunately, Tianmu continued to answer this question.

[Where did the earliest rainfall come from? We know. ]

[But where did the first water on Earth, including the increasing amount of water that followed, come from? ]

[The main academic view is that it comes from outer space.]

[We know that the universe itself has a large amount of hydrogen and oxygen, which can produce water when combined.]

[There is an endless amount of water in the universe! ]

[Of course, since the temperature of the universe is extremely low, the water in the universe mainly exists in the form of ice.

[Water condenses into ice in the low temperature of the universe.]

[These ices rushed into the inner solar system from deep in the universe along with comets and asteroids, bringing a large amount of water to the earth.]

[Especially after the moon was formed, the earth ushered in a peak of impacts. ]

[A comet with a diameter of about 5 kilometers often carries hundreds of millions of liters of water resources. ]

[And like a comet impact with a diameter of 5 kilometers, or even larger impact! ]

[This was a daily occurrence on the early Earth.]

[This water from the depths of the universe gradually remains on Earth under the protection of the Earth's atmosphere and magnetic field.]

[Over time, it finally provided a major source of the earth's abundant water resources today. ]

[It is now generally believed in the academic community that most of the water on Earth was brought to Earth by impacts from outer space objects such as comets.]

[The water that actually originates from the Earth itself only accounts for a very small part.] (End of this chapter)