"It's true that advanced civilizations rarely get close to the star fields far from the hyperspace passages, but it is equally difficult for us to go to the depths of these star fields."

Fang Yuan shrugged his shoulders and completed what he had said earlier.

"yes. The distance between the spiral arms of the Milky Way is generally more than 5,000 light years, and if there is no hyperspace channel, it will take 500 years to develop a second home if you want to develop a second home with the spiral arm of the galaxy next to it, and fly to the end with ten times the curvature of the speed of light. Lang Tongguang sighed.

500 years, on a cosmic scale, is actually not a long time.

It's just that for a person, it's a length of time that can't be crossed in a lifetime.

Actually, there is a more critical issue. Whether a star system has a hyperspace node or not needs to be explored to be confirmed. It's not that if there is no star map now, there really isn't, after all, the star map we have only accounts for 0.04% of the Milky Way. Chu Xingyun made another addition.

"The star map we have now is too old, is it possible to get the latest star map from the Carbon-based Alliance?" Lang Tongguang looked at the Supreme Council's department in charge of communication with alien civilizations.

"We have tried, and the photosynthetic civilization that Pigs said that the star map given to us is indeed a star map from 20,000 years ago, and the latest star map is a military secret, and it is impossible to give it to us, not even a transaction." Hu Haitong, head of the alien civilization communication department, replied.

"Even if there is no up-to-date, more recent star map, is it possible to get it?" Lang Tongguang asked.

"Pigs' reply is that the star map from 3,000 years ago is tradable." Hu Haitong replied.

This answer immediately aroused everyone's interest.

"Now that you can trade, when will you be able to complete the transaction?"

"This ...... According to Pigess, we don't have the advanced civilization currency that a carbon-based alliance needs. Therefore, it is impossible to trade, and at the same time, the number of stars recorded in the 3000-year star map is 100 million, which is more than 80 million, and the number of extra stars is relatively limited. So, the value of the deal is up for debate. Hu Haitong spread his hands and expressed helplessness.

"What is the currency of higher civilization?" Fang Yuan was more concerned about this issue.

"A substance called Zro, Zro is a transliteration, and the Chinese character transliteration is 'Zeluo', and we don't know what this substance is, so we can only transliterate it. What do you know about Zro? Already submitted to the Academy of Military Sciences? There is only so much information about this substance in our department. Hu Haitong spread his hands again.

Information about this unknown substance? There really is no way for a department in charge of foreign affairs to know more.

Admiral Rhodes looked over at the Academy of Military Sciences? "Is the report on this substance out?" ”

"The preliminary report already has? But it didn't answer what Zro was. Yesterday, I listened to the news from the curvature technology laboratory, and Professor Yang Yuping took over this data analysis? What does the morning message say? We can produce the report that we prepared today. The representative of the Academy of Military Sciences gave an answer.

At this time.

A communication intervened in the venue, and after being confirmed, an image of a person appeared on the big screen, and it was Yang Yuping.

But? What appears on the screen? It's not a robot image, it's a real person.

Obviously, what was shown on the screen was Yang Yuping's previous video.

Fang Yuan knew why Yang Yuping didn't reveal his current robot appearance, because of the carbon-based life soul energy method? There is controversy over ethics and humanity.

In order to avoid unnecessary trouble, confidentiality is required.

Yang Yuping began to make a report: "About Zro? Our team already knows what that is. Omit the complicated verification process, in words that everyone can understand? This is a higher purity star source aerosol.

Of course, it's not that simple.

"This Zro is an aerosol state? Very light weight? Can float in the air.

"Theoretically? It can be purified from Xingyuan ore.

"However, according to the information given by the photosynthetic civilization, the Zro concentration of the Xingyuan ore we are currently mining has not reached the purican concentration.

"To put it more simply, humans don't have the ability to mine and purify Zro right now."

"Starsource aerosol? Why can't it be purified, is it too difficult to do so? Admiral Rhodes asked.

"Technology is on the one hand, and on the other hand, it is true that the Zro concentration of Xingyuan Mine is too low. In fact, we can't even detect Zro from the star source mine, and all the conclusions are analyzed from the data provided by the photosynthetic civilization. Yang Yuping spread his hands and expressed helplessness.

"What the hell is a Zro? Dark matter? Fang Yuan frowned and asked.

Dark matter is actually a general term for unobservable matter.

Dark matter is not actually a substance, it may be a lot of matter, and it is characterized by the fact that it cannot be observed by humans in any way.

Once a certain kind of dark matter is observed by human beings through scientific and technological means, then this substance has been removed from the category of dark matter.

"Rather than dark matter, I prefer to call it materialized energy. From the data, it can be seen that Zro can be converted into energy by full mass, and the conversion ratio conforms to the mass-energy formula E=mc^2. Yang Yuping gave a very surprising answer.

All scientists know a scientific truth, when science comes to an end, mass equals energy.

In fact.

It doesn't take until science comes to an end for humanity to see the cosmic law that mass equals energy.

That's right, it's antimatter.

The annihilation of antimatter is completely in line with the rule that mass equals energy.

There is as much energy as there is mass of antimatter.

The sum of the energy produced is equal to the total mass of positive and antimatter.

So, human beings have mastered antimatter technology, and the same full mass is converted into energy, so is Zro still important?

The answer is, of course, yes.

From the point of view that Zro is a high-purity star-source aerosol, Zro should be a mild energy source.

The value of a mild energy source is countless times higher than that of a strong energy source.

Just compare it a little.

The difference between nuclear fusion and controlled nuclear fusion is worlds apart.

However, controlled nuclear fusion cannot yet be called a modest energy source.

Moderate energy can even be held in people's hands, and the value gap between this can be imagined.

From this point of view, it is not at all surprising that Zro became the currency of a higher civilization.

"In fact, the first purpose of the higher civilizations to occupy so many stars is stellar energy, and the second purpose is to find mineable Zro. That's why Zro has become the hard currency of advanced civilizations, and we don't have the ability to mine this kind of thing now, not even detecting it. Yang Yuping's tone revealed a trace of helplessness, and at the same time, it also implied infinite yearning.

The true meaning of science is to constantly explore the unsolved mysteries of the universe.