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"Miss Han, start the ion engine!" After Zheng Yaoguang returned to the cockpit, Tang Xiaochuan gave the order.

"Received!" Han Xiaoyue agreed, and pressed the button to start the ion engine. After the ion engine was ignited, it generated a small thrust to propel the spacecraft to fly around the moon. It was forbidden relative to the moon before, but now it has power to generate speed.

"Turn on the spacecraft's aerial ultra-high-definition camera and switch to an aerial perspective, so that audiences around the world can clearly see the situation on the surface of the moon!"

"Received... The ultra-high-definition camera for aerial photography of the spacecraft has been turned on... It has been connected to the earth satellite and the network..."

All the viewers in front of the TVs on the earth and the netizens in the webcast room saw a sudden change in the picture.

Someone exclaimed in a speech in the live broadcast room: "Wow, the picture quality is too clear and smooth, even clearer and smoother than seeing it with your own eyes. What mobile phones, cameras and video cameras are in front of this kind of spaceship shooting equipment. It's scum!"

"This texture looks so comfortable, it would be great if it is used for filming!"

"Heh, you're thinking too much, which director can afford this thing?"

"Fuck, compared with the images taken by Meiguo's space probe, there is no comparison at all!"

"Wooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooow

Tang Xiaochuan generally operated the spacecraft and said: "Now we are sailing over the south pole of the moon. We are going to pass through the front of the moon. Now because it is the end of March, we can only see the crescent when we stand on the earth at night. At that time, most of the areas on the back of the moon were under the sunlight. When we sailed through the front of the moon, most of the areas on the front of the moon were in the dark, so you couldn’t see anything, but Han The lady will explain it to everyone!"

Han Xiaoyue took over the topic and said: "Now let me introduce to the global audience and netizens in the webcast room. At this moment, we are already on the edge of the Arctic circle of the moon. Below us is the cold sea on the front of the moon, the cold sea It is long and narrow, with a large longitude span. It is connected with the surrounding lunar maria. Now the results of the detection equipment have come out. According to the analysis of the ultra-high spectral analysis instrument, it is concluded that the cold sea contains a large number of basalts, and there are a large number of these basalts. olivine and clinopyroxene!"

"Now we can see the front right, which is Rainbow Bay, which is also a lunar sea. According to the detection... Rainbow Bay is 100 kilometers wide from north to south, and about 300 kilometers long from east to west..."

"We have already flown over the Cold Sea, and the Sea of ​​Imbrium is in front of us, also known as the Sea of ​​Rains. Its northern Alps connect with the southern part of the Cold Sea, and obliquely pass through a lunar valley about 170 kilometers long and 10 kilometers wide. The valley is called the Moon Valley of the Alps!"

Tang Xiaochuan saw many people speaking on the public screen in the live broadcast room, asking how the names of the Moon Sea and the mountains came from, and who gave them the names, so he said, "I'll interrupt, I saw a lot of netizens in the live broadcast room I am asking about the naming of mountains and lunar seas on the moon! Let me say here that the names of alien planets and the mountains, valleys, plains and other areas on it should not be randomly named. You can’t call them whatever you want. Now we There is a special organization in the world that manages this matter, you discovered it first, you have to apply to this organization first if you want to name it, but it cannot be the name of a famous political or military figure, it can be the name of other scientists... ···You said you want to give this name, but he said you want to give it that name. The international names are different and confusing. That’s not acceptable. There must be a unified name. If a certain region has been determined Name, others can no longer apply!"

After waiting for a while, Han Xiaoyue continued: "Now we have passed the Sea of ​​Rain, and the Apennine Mountains are in front of us. From northeast to southwest, it separates the Chenghai Sea from the Sea of ​​Rain in the east..."

Next, Han Xiaoyue successively introduced a large number of terrain names on the front of the moon, such as the Sea of ​​Tranquility, Sea of ​​Abundance, Sea of ​​Danger, Sea of ​​Wine, Sea of ​​Clouds, Sea of ​​Wetness, Ocean of Storms, and the Copernicus impact crater.

The speed of the spacecraft is not too fast, but it is not too slow. It is enough for the ultra-high-definition camera to capture high-quality and smooth images. This is the first time that the audience on the earth can see the surface terrain of the moon so clearly.

Two hours later, the spacecraft arrived at the sky above the south pole of the moon. The terrain of the south pole of the moon is also extremely complicated. Mount Everest on Earth also appears short in front of this mountain.

There are a large number of meteorite impact craters on the surface of the moon. These meteorite impact craters are surrounded by craters, which were caused by the impact of meteorites. The centers of the craters are deep pits, generally one or two kilometers lower than the surrounding ones, and some are even six kilometers deep. , There is a large amount of rock dust accumulated in some impact craters. According to exploration, the thickness of this dust is very deep, and people may not be able to get up if they fall close.

On the far side of the moon, the number of maria is much less than that on the front side, there are only three, and there are four other branches in the marginal area.

When the spacecraft was sailing over the back of the moon, Tang Xiaochuan said to the camera: "Most of the back of the moon is still in the daytime, so the picture we saw just now is clearer than what we saw on the front. Previously, when we were on the front of the moon, it was in daylight." In the dark night state, everyone can see the landform of the moon because we have turned on the night environment function of the ultra-high-definition camera. If the night environment function is not turned on, you can only see a piece of darkness!"

"In places where the sun shines, the temperature is relatively high. If you don't wear a space suit, you will be roasted and dry after staying on the moon for a while!"

When arriving at the North Pole of the Moon again, Tang Xiaochuan said: "Next, we will change orbit, sail a circle over the moon's belt, take further videos and ultra-high-definition photos, analyze the mineral composition in the lunar soil, and then put All the photos are compared and analyzed to form a complete lunar terrain map!"

When the spacecraft was sailing, Han Xiaoyue introduced and explained the terrain one by one, and Tang Xiaochuan answered some representative questions raised by some netizens from time to time.

"Okay, next we need to find a place to land, and we have to choose a place where we can just see the sun rise, because the temperature of the moon's surface is not high at this time, we have to take advantage of this time before the temperature rises. A temporary base will be built on the surface of the moon for Zheng Yaoguang and Han Xiaoyue who will stay on the moon for continued scientific research and monitoring!"

Tang Xiaochuan kept typing on the keyboard to allow the computer to calculate, and said while operating: "Our previous plan was to land in Weihai to build a temporary base, but according to monitoring, the moon's gravitational force in Weihai is extremely small. It is small and has almost no gravity, which will have an inconvenient impact on our next scientific expedition, so we have to find another place to land, and according to the calculation, we decided to land in the southeast of Chenghai!"

Tang Xiaochuan looked at the big screen, and then said to the camera: "Before going to Chenghai to land, we have to do a very important thing first, that is to leave a static satellite in the synchronous orbit, its function is to use In the future, we will use it to complete the signal relay when we contact the earth ground control center from the base on the moon!"

"Zheng Yaoguang, prepare to launch the Yuewei 999 artificial satellite!"

"Received!" Zheng Yaoguang agreed, his hands quickly operated, and his fingers kept typing on the keyboard.

"Drain the air in the satellite launch cabin... Open the hatch... Start the Yuewei 999 control system... The signal connection is successful... Put down the suspension, and the Yuewei 999 is out success!"

"Start the power system of Yuewei 999 now, adjust and correct the orbit!"

After some operations, Zheng Yaoguang said loudly: "The track correction is complete!"

"Deploy the satellite cantilever and solar panels!"

"The deployment of the cantilever and solar panels is complete!"

Tang Xiaochuan ordered again: "Check the satellite signal reception, launch equipment, constant temperature system, power system, etc.!"

"······everything is normal!"

Tang Xiaochuan immediately said again: "Now contact the earth ground control center through Yuewei 999, and try to see if the signal is smooth and clear!"

"Understood!" Han Xiaoyue agreed, tapped her fingers on the keyboard, and then called into the headset: "Earth Ground Control Center, this is the Lunar Chenghai Base, please answer!"

······

"Moon Chenghai base, the ground control center has received, the signal is smooth and clear, it's over!"

Tang Xiaochuan immediately said: "The communication satellite has been launched. Now, we set off for Chenghai, adjust the course to 28 north latitude, 17.5 east longitude... and start the ion engine!"

There is no air on the moon. Decelerating the aircraft after accelerating is not as simple as turning off the engine. To decelerate, you must brake. In space without air, the aircraft needs to consume fuel to brake, and the carrying of fuel is not what you want to carry. Carry as much as you want, everything is calculated before, and you can't waste it too much, otherwise you may not be able to return to the voyage if you run out of fuel.

"Oh, many netizens in the webcast room asked such a question, that is, whether we have enough time to build the temporary base before the sun rises and the temperature rises. Many netizens may think that we only have two or three hours at most. In fact, you are wrong!"

"One day on the moon is equivalent to one month on the earth, half a month during the day and half a month at night, so the time we can use in the early morning on the moon is not only two or three hours, but two or three days!"

"Our plan is to build the temporary base in one day. Don't doubt whether we can complete this project. We have rehearsed before boarding the spaceship. How many steps are there in building the temporary base? What do each step do? We all know exactly how long it will take, and of course it is not absolutely accurate, the rehearsal is a rehearsal after all, and it will definitely differ from the actual construction situation!"

It didn't take long for the spaceship to reach the sky near Chenghai.

"Captain, there are still three minutes to arrive at the predetermined coordinate point!" Zheng Yaoguang reminded.