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Zhang Ran paused for a while, and then said: "The second more important task is related experiments on cosmic strings. Cosmic strings are related to basic physics, dark matter and related subjects in the high-dimensional universe."

"Let's invite Professor Huo Dong from Gaowei Laboratory to introduce the content of this aspect."

Cosmic string detection is considered to be a very cutting-edge science.

In fact, even the Sibadi civilization does not know whether the "cosmic strings" really exist.

Because cosmic strings are equivalent to dark matter, something hidden, only the gravitational wave telescope can discover them.

The gravitational wave telescope of the Sibadi civilization was developed in the process of fighting against silicon-based creatures.

The short 10-year war has indeed greatly developed the potential of the Sibadi civilization. After all, they are a powerful civilization that has completed the fifth industrial revolution, and they do have some background.

But the Sibadi civilization has no way to study cosmic strings, because cosmic strings only exist in the real three-dimensional universe, and they have fallen into the high-dimensional world at that time.

"And cosmic strings may be an important cause of the big tearing disaster in the universe."

Professor Huo Dong's argument quickly attracted the attention of everyone in the venue.

It was precisely because of the occurrence of the Great Rip disaster that a series of events followed.

If there is no big tear in the universe, human beings may still live a life of drunken dreams on the earth. The final outcome of human beings may be similar to the Sibadi civilization. Solar panels are laid on the surface of the planet to form a global power grid, and then 3D semiconductors are invented to enter the metaverse era.

Well, that's actually a pretty good ending.

Or it will be slower, it will take a hundred years, two hundred years, or even more time, and there will never be a way to reach the current achievements of Sibadi civilization.

After all, the civilization of the earth is in a state of fragmentation, the country hates the family feud, and the religious conflicts cannot be resolved in the foreseeable future.

As for the Sibadi civilization, at least there is a coalition government...

Thinking about it this way, human beings are actually inferior to Sibadi civilization.

Zhang Ran shook his head, throwing these wild thoughts to the back of his mind. The natural disaster has already happened, and there is no point in thinking about it.

Professor Huo Dong was still on the stage, enthusiastically explaining the latest discovery: "...the existence of cosmic strings will bend the surrounding time and space. Just like a black hole will bend the surrounding light to cover up its own existence."

"But black holes emit Hawking radiation, but cosmic strings are very quiet and emit nothing, so it is even more difficult to discover than black holes. Only high-precision gravitational wave telescopes can detect them."

"The quality of the string depends on the density and tension of the string. According to our conventional theory, the mass of a 2.5-centimeter cosmic string is about the same as that of Mount Everest, and the mass of a 1.6-kilometer-long cosmic string is the same as that of the earth."

Professor Huo Dong drew some arrow-like symbols on the blackboard.

According to the unified theory of "weak electricity", cosmologists believe that there were cosmic strings in the 10^-35 seconds after the big bang, which is almost the first product of the universe.

The closer to the Big Bang, the hotter the universe will be.

"Let's look backwards in the arrow of time: 30 minutes after the Big Bang, the universe reached a temperature high enough to produce pairs of electrons -- positrons -- from photons."

At 3 minutes, the temperature is high enough to split the nucleus into protons and neutrons.

In the first second, the weak force starts to work.

At 0.01 second, the temperature is high enough to split the protons and neutrons into quarks, which are then joined by strong interactions.

"What was matter like before that?"

"In the extremely high-energy state in the initial stage after the big bang, there was no distinction between gravity, electromagnetic force, weak force, and strong force, and only existed in a unified field. However, at that time, an ultra-high temperature phase transition would occur, and cosmic strings It is the remnant of this ultra-high temperature phase transition, which is the line-like defects in the phase transition. These defects contain the high-energy remnants after the big bang-the extremely thin and heavy unified field, which is the cosmic string."

Professor Huo became more and more excited as he talked, his face was full of red: "The existence of cosmic strings is speculated based on the grand unified theory. If it exists, it will exist as a high-dimensional matter and exist stably in the high-dimensional universe for a long time."

"As you all know, most of the substances we humans are familiar with cannot exist stably in the high-dimensional universe. Like our spaceship, if it enters the high-dimensional world, it will be decomposed within a picosecond. It is decomposed at the atomic level. There is no Chances of surviving."

"Multiquark particles can persist for a longer time, between 1 nanosecond and a few seconds."

"High-dimensional silicon crystals, as the spoils of war in the silicon-based universe, are the longest-lasting substances we currently have. Its half-life is 1.2 hours, that is, like radioactive elements, it decomposes in half every 1.2 hours. This It is also the main reason for the word 'high dimension' in its name."

"But this high-dimensional silicon crystal, we don't know how it is manufactured for the time being, we can only think it is a strange substance."

"As for the cosmic string, if it really exists, it has existed stably for more than 13 billion years! Studying its characteristics will be of great help to our activities in the high-dimensional universe. If we can study the slower decomposition speed Matter, whether it is for materials science or for the battle of the high-dimensional universe, is of great help."

Huo Dong's last sentence spoke out Zhang Ran's heart.

Now the fighting power of human beings in the high-dimensional universe is almost zero.

Whether it is a hydrogen bomb, an electromagnetic gun, or the newly invented high-energy laser, there is no way to leave the curvature bubble at all. Once they leave the three-dimensional space, these things will be broken down directly.

The high-dimensional silicon crystal is considered the only weapon... to cause an explosion through ultra-high-speed projection.

But it's a bit extravagant, it can even be said to be too extravagant! High-dimensional silicon crystals are limited spoils.

Enemies that can attack in the high-dimensional universe cannot be defeated by projecting some high-dimensional silicon crystals.

so……

"Pull out a cosmic string and whip others like a whip? Could it be that the wars in the high-dimensional universe are all close quarters?" Zhang Ran was full of doubts, "It's not right, this whip is too heavy, 1.6 kilometers long The cosmic strings are comparable to the mass of the earth, and it is impossible for ordinary machines to pick up this whip."

Lin Qiuyue, who was sitting in the first row, asked, "Professor Huo, is the tearing of the universe caused by cosmic strings?"

This is another very important question.

"It is indeed possible that the cosmic strings have huge tension. It is because of the existence of these strings that the universe is restrained from excessive expansion." Huo Dong took a balloon as an example, "It is very simple, the larger the balloon expands , the weight of the 'string' will naturally be greater, and the more prone to tearing."

"Of course, the death of the universe will not be as fast as a balloon. Once the balloon can't bear the tension, it only takes 0.1 seconds to explode. Instead, our universe is torn piece by piece. Spread. The whole process may take hundreds of thousands of years, or even millions of years."

"Professor Huo, has the universe reached the age of natural death?" Lin Qiuyue asked another question.

This question may sound strange, but it points to the truth.

Zhang Ran immediately thought of a creepy question, which was so cold that the hairs in his pores stood on end.

"I don't know if our universe died a natural death."

Professor Huo waved his hand and said helplessly, "Our researchers have come up with a lot of hypotheses. If cosmic strings are really a very precious thing...Of course it's just a hypothesis, the number of cosmic strings should be quite a lot. After all, they support the existence of our entire universe, and the number is definitely not rare! It can even be described by the words "Rotten Street."

"And cosmic strings are very heavy. I just explained that a few centimeters are like a mountain. Even if we humans encounter them, we can't collect them and use them..."

"But if cosmic strings are really a high-level energy source, there must be a more powerful civilization that can use it!"

"The universe is so vast and there are so many galaxies. Even our Milky Way is a very young galaxy. Those elliptical galaxies are generally much older than the Milky Way."

"In our universe, there is a high probability that there is no moral system that regulates all civilizations..."

"So, everyone should be able to understand the current situation. Since I can't confirm whether other high-level civilizations are collecting cosmic strings, why don't I collect these important strategic resources?"

"Hiss—" The meeting room suddenly fell into silence!

Zhang Ran sat in his seat, sighed slightly, and understood what Professor Huo meant.

Cosmic strings, perhaps very common.

As common as stars in galaxies.

But it's useful, more valuable than normal matter... After all, it's something that was born in the very first moment of the Big Bang.

And the cosmic strings support the existence of the entire cosmic membrane, preventing the universe from being torn apart prematurely.

If that is the case, the final result can already be predicted.

He smiled wryly and took a sip of water, feeling a little aggrieved no matter how he thought about it.

That is... some advanced civilizations developed cosmic strings endlessly, which led to this disaster.

This is what Professor Huo wants to express!

He could only sigh, and pour down a glass of water again. How can I put this feeling of aggrieved... This is like the uranium mines on the earth. A country capable of developing uranium mines must They try their best to dig, and then claim to the outside world that they are "peaceful use of nuclear energy".

And cosmic strings are worse than uranium mines. It is most likely a bad street thing.

As long as a certain civilization develops a gravitational wave telescope with sufficient precision, it is not difficult to find cosmic strings.

But it is this kind of rotten cosmic string that supports the existence of the universe itself. If you extract too much, you will only extract one-thousandth, one-thousandth, or even one-billionth, one-trillionth. , the universe will age prematurely, and a catastrophe of big tearing will occur!

"What would a human being do in such a situation?"

Ask yourself, Zhang Ran soon has the answer.

If humans become a high-level civilization, they will still dig.

Because human beings do not have enough ability to restrain other high-level civilizations. The universe is really too big, the observable universe, plus the unobservable universe, God knows where civilizations are secretly digging cosmic strings, tens of billions of light years, can humans monitor it?

The same is true for other civilizations. With this in mind, let's dig together!

A truly high-level civilization has long been able to travel through the high-dimensional universe without perishing because of it. It doesn't matter if the universe is dead, just change to another universe.

It is only the low-level civilization that perish... What does their life and death have to do with the high-level civilization?

This cold feeling of being trampled on like roadside ants is really uncomfortable.

The flowers carefully cared for by the family finally walked out of the warm home, and the iron fist from the dark society came oncoming. Who said that the moral character of aliens must be more noble, just like the satirical paintings of the painter Erwin, maybe aliens are also cannibalizing each other? !

...

(Haha, there are two changes today. Surprise, right? What about the monthly and recommended tickets?)