Regular 4 hedra! Inside, there are hollow gaps and gold metal sheets!

Everyone was stunned for a moment, and Lu Yi hurriedly asked: "Scan it from a different angle to see if you can shoot the details of the gold metal sheet inside!" ”

"Yes."

The engineer in charge of detecting the F03 signal area in the North Pole quickly entered a new control command on the keyboard, asking the groundhog rover far away on Mars to change direction and use CT scanning to scan the slices.

Everyone waited anxiously for more than half an hour, and the scan results were returned from Mars and displayed on the screen, and Professor Su couldn't hold back his excitement and shouted for the first time: "Text!" The gold metal plate is engraved with words! ”

The scans displayed on the big screen can clearly see the regular lines, and as expected, this must be the text of the Martians.

Writing carries civilization and records the information of civilization.

Thinking of this tetrahedral structure with the best ability to withstand external extrusion, a metal sheet made of inert gold, how can we not understand that this is the information deliberately left by the Martians.

It is likely that the history of the Martian civilization and the mystery of the demise of the Martians will be recorded on it.

"Send a few more rovers down to dig up this tetrahedron."

A trace of excitement flashed in Lu Yi's eyes, and he said: "Everyone be careful, be careful not to destroy the metal layer outside the tetrahedron, and let the Tomorrow be transported back to Earth as soon as you dig it up." ”

"Yes." The engineers who controlled the rover also suppressed their inner excitement and hurriedly entered a series of commands.

"Director Fu, help prepare a vacuum chamber that can hold this metal tetrahedron, and pay attention to biochemical protection."

"No problem, we have such a large vacuum chamber, we can use it if we change it." The administrative director of the Mars exploration program nodded hurriedly, and then went out to arrange this matter.

More than eight months have passed since the start of the Mars exploration program at the end of January and now in September, and now there is finally real and substantial progress, which is also great news for him, the administrative director who has been transferred.

Two and a half days later, the Tomorrow engine spewed a blue beam of plasma and slowly landed from the air at a speed slightly below Earth's gravitational acceleration.

"Earth's gravity is greater than that of Mars, everyone be careful, don't smash it!"

Lu Yi took all the people of the Mars exploration team, including 13 scientists who came from Russia and the United States urgently, to watch the robotic arm at the launch site, carefully transferred the 6.3-meter-long tetrahedron from the hatch opened by the Tomorrow, and then loaded a 22-wheeled large engineering vehicle and headed to the vacuum chamber......

"Lu, did you say that it records the mystery of the demise of the Martian civilization?"

Through the glass of the vacuum chamber, Professor Hill watched as the mechanical drill began to punch holes in the tetrahedron to examine the interior, and Professor Hill couldn't contain his excitement.

"I don't know."

Lu Yi looked at the monitoring screen, the drill bit successfully drilled through the outer metal layer, the gas inside leaked out, and the detection instrument in the vacuum room suddenly reacted.

"Helium! The Martians are really cautious, gold metal flakes plus helium, and there is no problem in preserving text information at the macro level for 20 billion years. ”

Professor Su was also looking at the monitoring screen, and when the gas leak came out and was detected, he couldn't help but sigh.

The helium and gold content on Mars is not high, and spending such a large price to purify helium and use gold to make metal sheets, no one will believe it if the information on the metal sheets is not important.

Of course, this can also save the information recorded by macroscopic inscriptions above a certain scale, if it is preserved like a compact electronic device, because the existence of thermal motion is well preserved, after a thousand years, the microscopic level will be mixed together, and the information recorded by the device will still be completely lost.

"No microorganisms such as bacteria and fungi were found, and no active viruses were detected."

After collecting multiple copies of the leaked gas, and after a detailed biochemical test, a biologist nodded to Lu Yi.

"Cut it at a predetermined angle, and be careful not to damage the metal piece inside!" Lu Yi instructed the engineer next to him who was in charge of controlling the robotic arm.

Because it was in a vacuum environment, the metal cutting seemed a little lonely and silent, there were no sparks flying around, and the sound of cutting could not be transmitted, and it took more than 4 hours to finally open a window in the tetrahedron along the pre-drawn lines.

Through the open window, pieces of metal were welded and fixed on top of each other, and the edges of the coin-sized words engraved on them were a little blurred, but the whole was still clearly visible.

"Get ready for the HD camera, change to a more precise robotic arm to take down the metal piece on it!"

For safety, this time Lu Yi did not intend to let people enter the vacuum room, but operated the robotic arm outside throughout the whole process, and then filmed the contents of the metal sheet piece by piece through the shooting of the high-definition camera for decipherment.

No one knows if there is an unknown virus or germ inside, and gas detection alone can only be roughly determined, but if you really want to be sure that there is no unknown virus or germ on it, you need a comprehensive test to be sure.

Therefore, before the safety is completely determined, it is necessary to ensure a vacuum and ensure the level of biochemical protection.

The tenacity and harm of microorganisms, Lu Yi has never dared to take it lightly.

The whole boring work lasted until more than nine o'clock in the evening, a total of 3699 pieces of metal, both sides of which were engraved with content, and a text was engraved in the upper left corner of each metal sheet, and the size of the metal sheets was not the same.

"Lu, these metal pieces with images should be a language dictionary, you look at this photo number 034, this image is obviously representing the sun, and below the image is a text.

However, I guess the meaning of this text should be the meaning of the number 1, because there are two suns drawn in the box next to it, and there is another text below the two sun images.

And after comparison, these two characters are the same as the words inscribed in the upper left corner of some metal sheets, so I think that the upper left corner of the metal sheet is the serial number of these metal pieces. ”

Late at night, after sorting and numbering the high-definition photos taken, and each person was responsible for a part of the numbered metal sheets, everyone was also busy quickly.

In less than ten minutes, after comparing a few photos, Hill was the first to discover a peculiar pattern.

"Let's see if there's a picture of the sun."

Lu Yi walked up to Professor Hill's screen, slid his finger to look at the photos he had picked out, raised his head and shouted.

"I have a picture with an image of the sun! Number 231. I display it on the big screen. ”

"I have a picture of 1711 with a sun on it."

"I've got one here, number 197."

"I have one here, number 638."

......

The people who were studying the photos said one after another the number of the photos with the sun in their hands.

There are a total of 7 photos, and Professor Hill, who has been in China for more than eight months and can understand most of the Chinese, found these photos in the database according to the number on the screen, and after a few minutes of comparison, he said with certainty in his heart: "1711 is not this photo, but 231 and 034 can be determined to be the number of Martians, 3 suns are another text, and 4 suns are another ...... One, two, three, four, five zeros, their daily counts are hexadecimal, and these hexadecimal numbers are the same as the numbers in the upper left corner of the metal sheet.

And then the remaining 4 photos should express the meaning of binary, you see this one sun is represented by 001, here the two suns are represented by 010, and the binary conversion continues until 6."

"What does this photo number 1711 mean?" Lu Yi nodded, stretched out his hand and pointed to the photo of 1711, a shining sun, and then an arrow extended from the sun, and there were two lines of text on it.

"Sunlight? Or the speed of light? ”

"This should express the speed of light."

Professor Hill compared the text just now and said, "The upper line of text should mean the speed of light, the lower line is the daily data of the Martians just now, and the last few words should be units of length and time."

Lu, we need to pick out all the photos with images and sort them according to the hexadecimal data in the upper left corner of the metal piece, and with such a complete dictionary, it won't be long before we can decipher the Martian text. ”