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Even the probe needs a series of calculations in the process of returning to the spacecraft, because the moon is in an ultra-vacuum state, there is no resistance without air, only the gravity of the moon, and the probe is powered by its own small rocket, so in It also needs to calculate and gradually reduce its power when it lifts off and returns to the spacecraft, so that its relative speed is zero when it returns to the cabin of the spacecraft.

At this time, the hatch door of the detector recovery cabin at the bottom of the spacecraft has been opened. This recovery cabin is isolated from the entire spacecraft, and the air inside it has been drained before the hatch is opened.

Tang Xiaochuan saw that the probe had lifted off and returned, and said to Han Xiaoyue: "Switch the probe's perspective to the spaceship's perspective!"

"Received...it has been switched to the spaceship perspective!"

The screen on the central control screen immediately changed. The ultra-high-definition camera lens at the bottom of the spacecraft was facing the north pole of the moon, and a bright spot appeared in the screen.

At this time, because the distance between the moon and the earth is 380,000 kilometers, it takes a little time for the signal here to be transmitted back to the earth, so the pictures seen by the hundreds of millions of viewers on the earth are slightly delayed. The screen has also been changed to the perspective of the spaceship.

Tang Xiaochuan looked at the screen showing the data next to the central control panel, and said to Zheng Yaoguang: "After three seconds, reduce the power of the detector to 5.5, and now start the countdown... 3... 2... 1... Reduce power!"

Zheng Yaoguang's operation was a bit delayed, Tang Xiaochuan found out and said: "Reduce it to 5.3!"

"clear!"

The speed of the probe's lift-off began to slow down, because the lift force under this power was already weaker than the moon's gravitational force.

When everyone saw from the spacecraft's field of view that the probe's ascent speed was zero and hovered, it was still more than ten meters away from the spacecraft.

"Increase the power by 0.1, take it slowly, just like you step on the accelerator in a car, slowly increase the control force, let the detector rise slowly, right, that's it..."

When everyone saw that the probe entered the recovery module and was suspended, they all breathed a sigh of relief. The audience in front of the TV on the earth and many people in the webcast room began to applaud, even though this was only the lunar exploration mission. The first task of the exam, but this task is not easy to complete.

Scientists from Meiguo and Tianzhu once spoke at a scientific research conference and said that they had detected water ice in the impact crater at the north pole of the moon, but they only used detectors to detect at high altitudes, and did not send detectors to take samples on the spot. It's not that they don't want to, but they can't do it at all, because the impact crater has never been exposed to sunlight, and the temperature inside is so low that it is not far from absolute zero. In such a harsh environment, they have no equipment at all. able to work in that environment.

"Switch to the perspective screen in the detector recovery cabin!"

"Received!" Han Xiaoyue tapped a few times on the keyboard, and then pressed a button next to it.

The screen on the right side of the big screen changed to the scene in the recovery compartment of the detector. Tang Xiaochuan reached out and pressed a button, "Now inject air into the recovery compartment of the detector!"

Soon, the right side of the big screen showed that the air pressure in the recovery chamber of the detector was normal.

"It's my turn to play!" After Zheng Yaoguang finished speaking, he took off his seat belt and pulled the armrest to float towards the rear cabin.

Tang Xiaochuan said to the camera of the live broadcasting equipment: "Because we still don't know whether the samples sampled from the deep crater at the North Pole of the moon are water ice or other dangerous and harmful substances, so the detection must be carried out on the spacecraft. The testing laboratory uses instruments for testing, and the inspectors also need to wear full-body protective equipment, and the specific testing process will not be broadcast live, we just wait for the results!"

After speaking, Tang Xiaochuan saw a system prompt on the live shooting screen that many people spoke and asked a question, "Oh, many netizens are asking that since scientists from Meiguo and Tianzhu said they detected a large amount of water ice in the impact crater at the north pole of the moon, why did they Don’t send detectors down to take samples! Hehe, I don’t know about this question, if you want to know, you have to ask these scientists, maybe they have a last resort!”

Someone in the webcast room immediately said: "You are all idiots, to ask such a stupid question, of course they didn't send the detector down to take samples because their equipment is not good, after going down, they can't work in the extremely cold and low temperature !"

Tang Xiaochuan read the speeches of many netizens, smiled, and operated on the keyboard, switched the viewing angle of the large screen, and turned on the spaceship detection function.

"This is a picture taken by the metal detector on the spacecraft. Audience friends and netizens can take a look. There are two metal devices in this big deep pit at the north pole of the moon. I think they should be the detection or Sampling equipment, but we can't detect any heat source or signal transmission through the infrared detection equipment, which means that the two metal detection equipment are in a dead state. We sent the detectors down just now and didn't find them because of the area of ​​the deep pit. It’s too big, and the light source on the detection equipment has a limited irradiation distance!”

At this time, Han Xiaoyue said to Tang Xiaochuan: "Captain, the task of photographing the topography of the lunar North Pole has been completed, the topographic map has been drawn, and the analysis of the mineral deposit content has been completed!"

"Okay!" Tang Xiaochuan agreed, and said to the live camera: "After Zheng Yaoguang's test results come out, we will proceed to the second step of the mission, which is to fly around the moon and keep changing orbits to take super-views of the topography and landforms of the moon. The high-definition photos and videos will be clearly seen by all audiences in front of TVs around the world and fans in the live broadcast room. We will zoom in on the camera so that everyone can see it more clearly, and Ms. Han is waiting I'll explain it to everyone later!"

"After the second step of the mission is completed, we will look for a landing plain for the spacecraft to land, and take everyone to experience what the moon looks like standing on the surface of the moon, and then see what our earth looks like!"

Netizens' speeches on the public screen in the live broadcast room kept swiping the screen, and many people couldn't help the excitement in their hearts and kept tipping.

Tang Xiaochuan glanced at the data next to the screen. The total number of online people watching satellite broadcasts and live broadcasts on the Internet has exceeded 4.9 billion. There are so many people watching at the same time. This is an unprecedented event. Even the Olympics and the World Cup There can't be so many people watching.

Tang Xiaochuan looked at the sun in the sky outside the window of the spacecraft, and said to the camera of the live broadcast equipment: "We are now above the North Pole of the earth. Here, there is sunshine all year round, and the temperature is much higher than that in the deep pit below. Now Miss Han is still alive. Using equipment to detect the approximate temperature in each area of ​​the lunar north pole!"

"Han Meimei, how is the temperature detection in each area at the north pole of the moon?"

"Hold on!"

Han Xiaoyue said while operating the instrument.

"······The temperature in the plains and deep craters in the regions at the north pole of the moon is relatively low, and the ridges and mountain tops are relatively high due to the perennial sunlight... In the northern edge of the Peary crater, We have detected that the temperature is around 50 degrees Celsius, and I think it will be relatively pleasant if we set up a temporary base there, but because it is on a crater, our activities will be restricted, which is not very convenient for scientific research!"

Tang Xiaochuan opened the perspective of the spacecraft, and the picture displayed the entire north pole of the moon, "Look at our north pole of the moon, there are potholes everywhere, which are caused by the impact of foreign celestial bodies. The moon is our earth's satellite, because it is in the earth's The periphery blocks the impact of many foreign celestial bodies for our earth. The lava activity inside it is already very small, and the internal energy cannot reach the surface, so it is a celestial body on the verge of death. The death we say here does not mean that it will explode. , but to say that its internal activities are getting smaller and smaller, until finally there is no internal activity at all, and it becomes a big rock!"

At this time, Zheng Yaoguang's voice came out: "Captain, captain!"

"Got it, please tell me!" Tang Xiaochuan said.

"Sampling and detection from the moon's north pole crater has been completed!"

All the viewers on the planet and the netizens in the webcast room all pricked up their ears.

Tang Xiaochuan asked in a deep voice, "What's the result?"

"It's ice. I have detected a large number of water molecules. It is ice made of water molecules condensed at low temperatures. It is pure natural and pollution-free! In addition, I found that there are some silicate components in the ice cubes during the detection of ice cubes." !Now the ice cubes I put in the container have partially melted due to the temperature in the laboratory”

It has been confirmed, completely confirmed, that water ice does exist at the north and south poles of the moon, and the reserves are not low.

Many netizens, viewers, and a large number of scientists who are watching the live broadcast on the earth cheered. There is ice on the moon, and ice is water. This means that it is possible for human beings to survive on the moon, and emigrating to the moon is no longer a dream. It's about to become a reality.

Tang Xiaochuan asked again: "Are there any microorganisms in the ice?"

microorganism? Many viewers and netizens immediately understood what Tang Xiaochuan meant when he asked this question. If there are microorganisms in the ice, it means that there is life on the moon.

Zheng Yaoguang's voice came out: "No, no microorganisms were found!"

Billions of viewers around the world couldn’t help but feel a little disappointed after hearing this, but many people also breathed a sigh of relief. No one can guarantee what extraterrestrial microbes are and whether they are harmful to the earth and human beings. Life is definitely not a thing to be completely happy about. You have to figure out whether it is aggressive. Some microorganisms are viruses. Many people have seen science fiction movies. The world has brought devastation.

Tang Xiaochuan said after listening: "Okay, you keep these three samples and store them at low temperature. I will take them back to the region for further compositional analysis and research!"

"Next, we will sail around the moon, audience friends, are you ready?"