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"That is to say, if I go out to the left side of the spaceship without a space suit, I will die of heat soon, and I will freeze into ice cubes in an instant when I go to the right side..."

In this way, Tang Xiaochuan chatted with the audience in front of the TV and global netizens and fans while working.

He contacted the ground control center every hour to report the situation of himself, the other two astronauts and the spacecraft, and chatted with the audience and netizens after finishing his work.

For a full six hours, audiences and netizens around the world have never seen Tang Xiaochuan chatting for such a long time. The content of the chat is all over the world, the customs of various countries, eating habits, and the solar system and the universe. Knowledge is endless.

On March 29th, at 3:00 a.m. Beijing time, Zheng Yaoguang and Han Xiaoyue were woken up by the spacecraft system in succession. They washed up and put on their work clothes to replace Tang Xiaochuan.

"The atmospheric pressure inside the spaceship is exactly a standard atmospheric pressure, the oxygen content is within the normal range, and the spaceship hull itself has a strong ability to resist cosmic rays. There are also devices inside the spaceship that automatically detect and sense the radiation value. If the radiation value exceeds the standard, it will definitely Warning, so it doesn't matter if we don't wear space suits now, it's very easy!"

After Han Xiaoyue spoke to the camera, she floated towards the cockpit.

"Morning, handsome guy!" Han Xiaoyue entered the cockpit and greeted Tang Xiaochuan who was still chatting with netizens and audiences.

Tang Xiaochuan turned his head to look, and raised his hand to say hello: "Morning, did you sleep soundly?"

“Very fragrant!”

Zheng Yaoguang also came over soon, the two greeted each other, Zheng Yaoguang said: "Mr. Tang, you go to rest first, we will leave this to us!"

"Okay, I'll take a nap first, you can call me anytime if you need anything!"

"OK!"

According to the plan adopted by the ground control center, through calculation, the original plan will take about 28 hours to reach the orbit around the moon. Some people may ask, since the escape velocity of the spacecraft has reached or even exceeded the second cosmic velocity, then the distance from the earth to the moon is only 28 hours. 380,000 kilometers, if calculated in this way, it only takes 12 or 3 hours to arrive, why is there still such a long time? Even the probes launched by some countries to the moon take several days to arrive. Why is this?

First of all, although the speed of the spaceship’s escape from the earth has reached or even exceeded the second cosmic speed, it is impossible for the spaceship to run on the conventional engine all the time without so much fuel consumption, because the gravitational force of the earth on the spaceship always exists and will not disappear. The older the smaller it is, so if the spacecraft turns off its engine, its speed will become slower and slower.

Today's spacecraft rely on ion engines to resist the gravitational force of the earth, and not to resist the gravitational force in a straight line, because the flight orbit is elliptical, and it moves tangentially to the gravitational force of the earth, which can resist part of the gravitational force of the earth, and can also allow the spacecraft to maintain a high speed Flying, only the speed weakens and becomes slow.

At this time, the ion engine of Xinghe also played a role in resisting the gravity of the earth. Although it could not completely offset it, it was still very powerful, which shortened the time for the spacecraft to go to the moon to 28 hours.

After careful and precise calculations, when the spacecraft arrives in the Earth’s orbit around the moon, the speed of the spacecraft is just low enough to be parked over the moon and remain stationary relative to the moon. During the entire transfer process, the ion engine only needs to provide a little resistance to the earth. The thrust of gravity will do.

Earth time on March 29th, Beijing time at 19:43 p.m.

The spacecraft was still sailing at a high speed, when the Xinghe-1 spacecraft control system issued a prompt: "Attention, astronauts, the spacecraft will reach the 200 kilometers above the lunar North Pole in the orbit around the moon in five minutes, please pay attention to switch and adjust the orbit. !"

At this time, the number of viewers in front of TVs and live broadcast rooms in various countries around the world is increasing. Since two hours ago, the number of viewers has begun to surge. At the least, there were only a few hundred million people watching, but two hours ago, every minute was The number of hundreds of thousands of people has increased, and by this time, the number of viewers and netizens who are watching the global live broadcast has reached 4.7 billion, which is more than the previous peak.

Tang Xiaochuan and the other two astronauts immediately started to prepare. After putting on the space suits, everyone sat in the driving position in the cockpit. Tang Xiaochuan was the main pilot, and Zheng Yaoguang and Han Xiaoyue were the co-pilots. They were responsible for assisting .

Tang Xiaochuan adjusted his breathing, and looked at the public screen in the live broadcast room on the screen of the shooting equipment, "Some netizens asked why the spacecraft entered orbit around the moon above the North Pole of the moon. Scientists from China and Tianzhu said that their probes have detected the existence of water ice in the impact crater at the north pole of the moon, so the first mission of our lunar exploration expedition this time is to find out the existence of water ice in the impact crater at the north pole of the moon. Is there any water ice!"

"What is water ice? Of course, it is a solid ice cube formed by the solidification of water at extremely low temperatures. If it is confirmed that there is really water ice in the deep crater at the north pole of the moon, it will be of great significance to our lunar exploration. Because water ice can be melted into water by high temperature, it can be used for astronauts to drink after testing without problems; it can also produce oxygen and hydrogen through electrolysis, which can be used as fuel for spacecraft engines, according to scientists from Meiguo and Tianzhu , The reserves of water ice they proved are quite large, about 600 million tons, as for whether there is water ice here, and whether there are such a large reserve, we will know soon!"

"First, let me explain that we will not land the spacecraft to detect the north pole of the moon, but send probes to conduct detection calculations and collect relevant samples, because the spacecraft will consume a lot of fuel every time it lands and takes off, and we don't have enough fuel. With several consecutive landings and lift-offs, we will adjust the orbit after entering the orbit around the moon, so that the spacecraft is hovering over the North Pole, and the North Pole of the Moon is not the destination of our monitoring base this time!"

After several people waited for two minutes, the spacecraft control system issued a voice: "The spacecraft travels at a speed of 1.7 km/s, arrives at the predetermined coordinate point, and begins to enter the orbit around the moon. The astronauts are asked to adjust and cut into the orbit!"

Tang Xiaochuan shouted: "Xiaoyue!"

"Understood, start the ion engine braking, adjust the sailing direction... the speed will reach 1.68 km/s..."

The spacecraft control system soon heard a voice: "The orbit switch is successful, and the spacecraft is freely controlled by the pilot!"

Tang Xiaochuan reached out and pressed a button while talking: "Turn off the ion engine, and the spacecraft is in a static state in orbit around the moon. Now send out a small detector, open the detector storage hatch, start the detector power system, put away the suspension, and lower it. ..."

"Understood!" Zheng Yaoguang agreed and started the operation.

A hatch was opened at the bottom of the spaceship, and a probe hanging on the suspension fell towards the moon because the suspension was suddenly retracted, but its power system was activated, and blue flames were ejected towards the moon. Although it is getting faster and faster, the flame it spouts is also getting bigger and bigger, and the speed starts to slow down after reaching a certain level.

"Switch the detection field of view screen!" Tang Xiaochuan said.

"Understood!" Zheng Yaoguang agreed, and immediately switched the screen. At this time, the screen on the large screen of the spaceship's central control had switched to the detector's line of sight, and the screen could clearly see the lunar ground getting closer.

"Connect to the live broadcast of the earth..."

"Received!" Han Xiaoyue agreed, and with some operations on the keyboard, all viewers around the world and netizens in the live broadcast room immediately saw two pictures. It is rapidly approaching the ground.

Tang Xiaochuan looked at the landing speed and distance of the probe, and immediately said: "Yaoguang, increase the power output of the probe...OK, hold on, hold on..."

Zheng Guangyao followed Tang Xiaochuan's instructions, and Tang Xiaochuan was using the central control computer to quickly calculate, "Increase to the maximum power output, okay, hold on!"

After some precise calculations and instructions, Zheng Yaoguang finally controlled the probe to land on the ground when the speed was zero.

At this time, the detector's field of view was pitch black, Tang Xiaochuan said: "Now the detector's image is black, this is because it landed directly on the impact crater, where there has never been sunlight, there is almost no light, and here The temperature is very low, we have to turn on the heating system to keep it at a higher temperature, otherwise it will stop working or lose contact with the spacecraft because it is too low! Flare, turn on the heating and thermostat of the probe system!"

"Understood! The constant temperature system is turned on!"

"Turn on the searchlights!"

Zheng Yaoguang reached out and pressed a button, and found that the detector screen was already lit up, and the light was very clear, "The searchlight has been turned on!"

"Now you can operate the detector to sample!"

"receive!"

When Zheng Yaoguang was operating the detector, Tang Xiaochuan said to the camera: "The reason for turning on the constant temperature system first, and then turning on the searchlight equipment is to keep the battery and the circuit system running normally, because in an extremely low temperature environment, the battery may be damaged. Power not available!"

"Oh, we can now see through the probe's searchlight equipment that there are indeed a lot of transparent ice-like things at the impact crater. Are they water ice?"

Zheng Yaoguang had already operated the detector to walk in front of a scattered white transparent block. It stretched out two paws to pick up the block and put it into a box on its waist, and then collected two pieces of different sizes. After the white transparent block, he said while operating: "Now we have collected three white transparent blocks. The sampling task has been completed. Now the probe will return to the spacecraft and start the flight mode..."

Four flames spewed out from the probe, and the picture gradually moved away from the impact crater on the moon.