More than 1,000 kilometers away, a department in Yanjing was urgently established, and the name of the department has not yet been determined.

A group of real experts and professors, the pillars of the country, said possible inferences from their mouths with serious expressions.

"The sun disappears, it's impossible!"

"The disappearance of a mass body as large as the sun is as simple as the lack of sunlight."

"Gravitational changes, orbital changes, any of them can make the blue star irreversible, or even disintegrate."

As soon as the bespectacled soldier sitting in the middle finished speaking, an old man agreed with his hand.

"Academician Su is right, I agree, the sun disappears, it is impossible to reappear after 24 minutes, only there may be something that obscures the light of the sun directly shining on the blue star."

"It is well known that it takes 8 minutes and 13 seconds for sunlight to walk from the Sun to Earth, which means that the sunlight shining on the blue star at this time belongs to eight minutes ago."

"So the 24 minutes we get, at this point in time, are most likely not the best accurate."

"I agree."

"I agree."

"The only question now is what caused the suspension of the global communications network."

"There are many ways to achieve this effect by electronic pulses and signal isolation, but this time the range is a little too large......

The experts in the room quickly figured out the general context, and just as the discussion was underway, the door suddenly opened.

A middle-aged man with a Chinese face, about forty or forty years old, pushed the door and walked up.

"Hello academicians and experts!"

"My name is Zheng Guoxing, everyone can call me Xiao Zheng." The situation is urgent, this man gave a brief introduction, did not delay time, and waved his hand to let the people who followed him install the instrument.

Printed materials were distributed to experts and scholars.

"You should have signed a confidentiality agreement when you came, but I have to repeat that the information in this room is not allowed to be revealed to the outside world."

After speaking, he walked over to the installed instrument and pressed the play button.

"This information was recorded by astronauts on Tiangong-1, as well as high-altitude orbiting satellites of various countries."

In the video, the blue star is still bright, and in the next second, 24 black dots suddenly appear on the surface of the planet, and 24 black dots erupt a rich black substance, which spreads around the world in less than two seconds.

Then the whole Blue Star was 'invisible'.

It's like a black hole, which can't be reached by any light source, and the light source inside can't be emitted.

If it weren't for the data displayed next to it and the moon not far away as a gravitational positioning, it would almost have been thought that the blue star had disappeared entirely.

The entire process lasted for 24 minutes, before the darkness receded and re-condensed into a single point.

"The North Pole." A deep voice confirmed.

"That's right, it's the North Pole, and in the end, the condensation point of the black fog is concentrated in the North Pole, and the scientific expedition teams of various countries have set off."

"Summoning all academicians is to let them boldly guess what this black fog is? Is there a chance that it will reappear again? ”

"This ......" the experts looked at each other, were silent for a moment, and began to put forward their thoughts skeptically.

"This doesn't make sense!" One of the experts sitting at the end rubbed his temples and withdrew his frightened expression.

"At the edge of the suborbital orbit 100,000 meters above the ground, all light sources are eliminated, and external light sources cannot shine in." An expert said, looking at the information in his hand.

"I have an idea, let's see if this is possible?"

"As you can see, there are a total of 24 black substances released around the world, and they spread around the world in about two seconds."

"Is it possible that it is some unknown material or substance, with extremely high diffusion and stretching?"

"And it has the ability to release pulse signals and block signal propagation."

"This material is not as much as we thought, it occupies all the space from the subspace downwards"

"It only needs to cover a thin layer of the earth around the subspace to achieve this electromagnetic silence and physical 'invisibility' effect."

As soon as the words fell, the academician on the opposite side spoke.

"Against!"

"As you said, internally, it can release pulse signals, block the spread of information, and how to achieve physical invisibility externally!"

"It is well known that in the upper bound of the blue star's atmosphere, under the condition of the average distance between the Sun and the Earth, perpendicular to the area of 1 square centimeter of the sun's rays, the solar radiation energy obtained in 1 minute. The solar constant is 8.24 joules / (cm2*min). ”

"If it is calculated per square meter per second, it is necessary to multiply 8.24 by 10^6 to convert it to square meters, and then divide it by 60 to convert it to seconds. It is 1.37×10^5 joules per square meter per second.

"Then convert that number to standard coal.

"It can be concluded that the solar radiation energy per square meter per second on the blue star is 4.676×10^-6 tons of standard coal. That's about 4.7 grams of standard coal. ”

"Multiply the approximate area of the surface of the blue star, and the energy that the sun radiates to Earth every second is equivalent to the heat emitted by the burning of more than 5 million tons of coal."

"In 24 minutes, 7.2 billion tons of coal released the same amount of heat as more than a dozen Hiroshima atomic bombs."

"Where did all this energy go? If you don't absorb this sunlight energy, you can't be 'invisible' in the physical sense. ”

The one sitting next to him followed as he spoke.

"Agreed!"

"I agree with the original assumption! And I'll make a few more additions. ”

"As Academician Zhang said, if you want to be physically invisible, you must absorb the energy from the sun."

"But one thing that must be noted is that we are inferring the problem from the outcome, and it does become physically invisible, absorbing this energy from the sun."

"In the cosmic background, when the whole color is dark, our observation instruments also use light sources as the receiving conditions."

"You only need to absorb the light source and not reflect the energy, so that you can be physically 'invisible'."

"Since such a huge amount of energy has been absorbed, is it possible?"

"The unknown matter that spreads throughout outer space does not contain energy in itself, it only converts the energy contained in sunlight into electromagnetic pulse signals, performs radio silence, and does not store it."

"Counting only the energy absorbed and released, the difference between the two is not large, and the range of the difference can be completely reduced to the energy consumption lost by conversion."

"Against!"

"In that case, how does it only reflect internally and not externally?"

"The space below the first floor is shielded, but the above high space stations are not systematically isolated, and short-distance communication can be carried out through communication satellites on each space station and will not be hindered."

"Agreed!"

"Adjust the model according to the gravitational source, only release internally, not externally, and the material form can achieve this effect."

"Against!"

“……”

?? The debate continues, and one after another may be raised.

The more the reasoning is argued, the clearer the matter becomes, and the top elites of the country are gathered here in their debates.

Whether it's the people in the house or the people who are listening behind the surveillance, they slowly have a bottom in their hearts.

The organizers of the meeting covered their ears and listened.

A gentle knock on the table interrupted their debate.

"One question, is it possible that this kind of thing was made in a certain country?"

"Impossible!" This time, it can be said that the answer is unanimous.