"It's still unclear whether it's a relic or not."

Li Cheng looked at Rodel and shook his head slightly.

If it is a relic, if a high-quality dwarf planet with a diameter of more than a thousand kilometers comes directly to the main world, even if the issue of the gods behind it is not discussed, the gravitational chaos caused will shatter the gravitational balance of the entire earth-moon system.

.

When the time comes, secondary disasters such as earthquakes, tsunamis, volcanic eruptions, and even earth-moon impacts will most likely directly lead to the destruction of the world.

Obviously, everyone is aware of this.

The atmosphere in the entire conference room was a bit dull.

"so,"

Ji An on the side looked up at He Ao and asked slowly, "What is the relationship between this thing in the sky and the Blood Sun?"

This is what Li Cheng mentioned before, and it was He Ao who reminded him to look at the sky.

Nodel also looked up at He Ao.

"eclipse."

He Ao looked at the two people and said calmly.

The two of them were stunned at the same time.

He Ao looked at Li Cheng.

"Although this huge 'transparent ball' in the sky transmits light, in essence, it is very similar to the 'moon' and is still a huge 'light-blocking object',"

Li Cheng turned on the projector on the conference table and inserted a USB flash drive into the computer. A simple slideshow showing the relative positions of the sun, moon and planets was placed on the wall.

"The distance between the earth and the moon where we are is about one-fourth of the distance from the sun, and the diameter of the moon is also about one-fourth of the sun, so the angles of the sun and the moon in our field of vision are both

About 5 degrees,

"For this reason, the sun and the moon in our field of vision are 'about the same size'.

"Because the sizes in the field of view are almost the same, when the moon is between the planet and the sun, people in the blocked-out area can see that the 'moon' just blocks the 'sun', forming a solar eclipse.

"Of course, because the relative distance between the three planets is not constant, and the sizes of the sun and the moon in the field of view are not necessarily exactly the same, various situations will actually occur, but this is beyond the scope of our discussion today.

"

Li Cheng switched to the next slide, which was still a schematic diagram of three planets, except that the moon was replaced with a blood-colored translucent planet.

He continued, "The 'transparent planet' currently hanging above our heads is, in a sense, a small 'moon'.

"Its diameter is about one-fifth of the moon, its distance from the earth is also about one-fifth of the moon, and its viewing angle is about 5 degrees. If this thing were tangible, its size in our field of vision would be about

It’s as big as the moon and the sun.”

"so,"

Ji An came to his senses. He looked at the slide and asked, "Now this planet is right above our heads, 'blocking' the sun's light? Is the 'Blood Sun' essentially a transparent planet?"

"Strictly speaking, it doesn't completely block the sun,"

Li Cheng nodded and said slowly,

"The sunlight has still 'passed' through the center of this transparent planet, but it has undergone some kind of change after passing through. The overall wavelength has become longer, and the color of the light is redder. When it is cast on the earth, the color becomes more

Blood red and other colors of light have not disappeared, but their proportion has become smaller.

"This is also similar to the red color of the sun we see in the morning. The red sun in the morning is essentially a red light that has stronger diffraction and better passes through the atmosphere at a low elevation angle, causing it to be projected onto the ground.

There is more red light in the sunlight, so the sun appears red.

"Of course, it is essentially different. A transparent planet achieves this effect by 'turning' other light in the solar spectrum into red, and the proportion of red light is much greater than that of morning sunlight."

"cough,"

At this time, Li Cheng glanced at Rudel and Ji'an who looked a little confused, coughed slightly, and explained, "This transparent planet is equivalent to a huge 'lens'. As long as you look at the sun through the lens,

Everything you see is red. Of course, after the sunlight passes through this 'lens', it also undergoes some extraordinary changes."

"So Blood Sun itself is not a transparent planet?"

Ji An reacted somewhat, "But the 'sun' we see through the planet?"

Scientific, but not entirely scientific.

He Ao stared at the slides behind Li Cheng.

In fact, he has already read all this information, and the main content of this slideshow was quickly sorted out by him and Li Cheng on the way here.

"But our biggest problem at the moment may not be limited to the scope of the bloody sun,"

Speaking of this, Li Cheng glanced at He Ao.

He Ao naturally walked to the projection, took over Li Cheng's position, and switched the slides. The latter part was his discovery, or 'guess', during the discussion with Li Cheng.

The slide behind him turned into a schematic diagram of three planets connected together. The top one is the largest and is labeled as the sun, the middle one is the smallest and is labeled as a transparent planet, and the bottom one is labeled as the earth.

He glanced at the people below, placed his hand on the transparent planet, and said quickly,

"We can see from the introduction just now that this transparent planet does not turn all the light that passes through it into 'blood red'.

"The 'starlight' captured by the space telescope in low-Earth orbit passing through this transparent planet shows no change in color except for a dimming in brightness and a slight shift in position."

While he was speaking, everyone subconsciously glanced at the photos taken by the telescope printed out on the desktop.

He Ao left some time for everyone to digest, and then switched the slides.

The new slide draws two lines. These two tangent lines are on the left and right sides, tangent to the sun and the transparent planet. These two lines intersect with the earth respectively, forming a trapezoidal shape with a larger top and a smaller bottom.

He Ao put his hand on the joint with the earth and continued,

"According to the principle of solar eclipse, the satellite completely blocks the sunlight, and the shadow cast on the ground is called the umbra. In a normal solar eclipse, people in the umbra area can see a complete total solar eclipse.

"In our current situation, if a person is in the umbral area of ​​the 'transparent planet', all sunlight passes through the transparent planet, and what he sees is the 'blood sun',"

He Ao cut out a map and roughly drew a circle on the map.

"Because the planet's surface is curved, this shadow is not a perfect circle. It is probably an area of ​​more than 200 kilometers at its widest point, covering a total area of ​​about 150,000 square kilometers.

"This is the coverage area of ​​the 'Blood Sun' we saw. It probably covers the entire western part of the Republic of Ika and a small area in the north of Jordan.

"According to the information we have obtained, this part of the country is basically a large plain with a very high population density. It is one of the areas with the highest population density in the entire Western Territory."

He Ao looked at Rodel.

"Yes,"

Rudel nodded, his expression a bit grim, "Including the floating population, there are probably more than 60 million people in this area."

Even if 60 million people want to evacuate, they cannot evacuate in a short period of time.

Judging from the current situation, the bloody sun in the sky may not give them much time.

They can't even count how many people are missing now.

"But it might not be the worst,"

He Ao shook his head and switched to the next slide.

In this slide, there are still two tangent lines extending from the edge of the 'sun', but this time they are not directly tangent to the 'transparent planet', but first cross and then tangent to the transparent planet, and finally extend to

On the earth.

Howe's finger traced the point where these two tangent lines intersected the earth,

"Except for the umbra area contained in this entire area, the rest is called the 'penumbra' area. If it is a solar eclipse, people in the penumbra area can see a partial eclipse.

“In this case, these people in the ‘penumbra’ area did not see the ‘half-blood sun’. In other words, the transparent planet did not change the ‘sunlight’ in these penumbra areas too much.

"We don't know yet how it does it. It may be some kind of supernatural force."

Having said this, he paused, looked at everyone present, and continued, "But people in these penumbra areas who are illuminated by 'normal sunlight' may not be affected by the extraordinary power of the 'Blood Sun'."

"you mean?"

Rudel was stunned.

"According to the information from the institute,"

He Ao glanced at Li Cheng and continued, "People who leave the Blood Sun area will still receive 'calls', but the frequency and intensity are not as high as in the Blood Sun area."

Rudel subconsciously turned to look at Li Cheng.

As the 'elder' of the Western Land's main extraordinary organization, World Tree, he didn't even know about the news. How could the institute know about it?

He Ao paused his speech and gave Li Cheng time to explain.

"cough,"

Li Cheng covered his mouth and coughed slightly, "Our person in charge in Ruodan happened to be investigating something in Enke City in the north, which happens to be within the area covered by the Blood Sun."

At this time, Rodel seemed to remember that Rodan was indeed under the "trusteeship" of the institute.

At this time, Jie An also raised his head and looked at Rudel, "Don't you have anyone under you to organize the transfer of personnel?"

······
To be continued...