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Landing on Earth

After listening to the words of Ke Yu and Jia Jing, Melamine nodded, and then asked, "In addition to mapping the topography of the lunar surface, do you need other explorations?" ”

"If possible, hit it like any other planet and learn about the composition of the moon's surface!" Ke Yan said.

"Are there any other detectors that can be used for impacts?" Melamine turned his head and asked for lightning strikes and leaps.

"Yes, there are several!" Lightning struck back.

"Well, that's good!" Melamine said with satisfaction. "Any other questions?"

"I'm going to record the composition of the moon's surface!" Plasticizer said.

"Okay, let's do it together when it hits!"

Melamine saw that there was no problem with everyone, reducing the speed of the spacecraft into the orbit of the moon, or chasing from behind according to the original strategy, and it didn't take long for everyone to see that a dot in front of them was getting brighter and brighter, and then they could see the shape, it was half a circle, and the other half had no light, and the shape could be seen vaguely, at this time the spacecraft had dropped to the ordinary cosmic speed, and everything in front of them was not as fast as before, and now there was time to prepare the detection equipment.

"This satellite is so clear that it doesn't look like there's an atmosphere at all!" Plasticizer said.

"Well, its mass is relatively small, and it is difficult to absorb the surrounding gas by its own gravitational pull!" Ke Yan explained.

"Well, that's right, just bare rocks and dry surface!" Clamp sperm also said.

The spacecraft slowly approached the moon, because there was no atmosphere, and there were no other floating objects to block the view, everything on the surface of the moon could be seen clearly, and the two astrophysicists took pictures of the side facing the spacecraft, at this time the spacecraft and the moon were close enough, melamine immediately ordered Huang Xun to let the robot climb out of the spacecraft with the probe, Huang Xun immediately complied, and melamine continued to control the spacecraft towards the surface of the moon.

As the spacecraft got closer and closer to the moon, everyone could see that the semicircular spots in front of them were getting bigger and bigger, and later they all filled the spacecraft's field of vision. At this time, Ke Xuan and Jia Jing reported: "The specified distance has been reached!" ”

"Let it go!" Melamine shouted.

"Good!" Huang Xun agreed and pressed the button, and the probe smashed straight towards the surface of the moon, and the melamine operation spacecraft turned a slight corner, and the spacecraft flew towards the far side of the moon. Melamine slowed down as much as possible, so that Plasticizer could see the fire when the probe hit, and also tried to give Ke Yan and Jia Jing a chance to see the topographic map of the far side of the moon, with a loud bang, a fire shot straight into the sky, and the dust stirred up by the explosion formed an earth dragon rising from the surface of the moon, and because there was no atmospheric floating, it didn't take long for the dust to fall again. At this time, Plasticizer came over and reported: "Professor Mi, good news! ”

"What's the good news?" Melamine asked in surprise.

"Just now I carefully identified the light emitted by the impact point, and it turned out that there is a large amount of metal titanium on the surface of this moon!"

"What do you say? Titanium metal? "Melamine was even more amazed.

"Yes, I see the spectrum emitted by the impact port, and there is a lot of titanium!"

"This is a gratifying discovery, the surface of the moon has no air, no water, and is not affected by volcanoes, earthquakes, floods and radiation, so it is a good place to mine titanium!" Melamine said happily.

"Professor Mi, what do you mean?" The card clerk on the side asked with a puzzled face.

"Haha, you may not know about this aspect, titanium is a very important metal, also known as space metal by scientists from the sheep country, this metal has good hardness, good toughness and anti-corrosion properties, and more importantly, it also has good memory properties, which is an ideal material for making spaceships and other space equipment! In fact, there are also on our planet, but it is difficult to smelt, this metal needs to be smelted at high temperatures, and the chemical properties of titanium are very active at high temperatures, and oxygen is very easy to react! It's not the same on the moon, there is no oxygen and no protection is needed, it's the perfect place to build a space base! ”

"I see!" The carder nodded.

"Have the two astrophysicists mapped the terrain of the far side of the moon?" Melamine asked again.

"Most of it was recorded! We weren't very happy though, and we'll do it again if possible! Ke Yan said cautiously.

"What do you think?" Melamine turned to lightning strikes and leaps again.

"Nuclear thrusters still have energy!" Don't worry about that.

"Hmm," melamine nodded. "What about provisions?"

"That's no problem!" Art affirmed. "We still have two or three months to feed!"

"Well, that's good! It will take us about two or three days to get from here to Earth, it will take a day to circle the Earth, and we can go around a few more times and throw down those probes! Melamine summed up. At this moment, he glanced at the dashboard of the monitoring area, which was inconsequential, and almost scared melamine into screaming. He suddenly saw the magnetic field pointer on the dashboard lying silently in place, while the gravitational pointer swayed from side to side. Melamine suddenly stood up and rushed to the dashboard, taking a closer look, and he couldn't help but gasp as he was sure of what he had just seen. Several scientists also came to the dashboard to find out after seeing melamine's move, and Ke Xuan and Jia Jing couldn't help but take a breath. The cardinal didn't understand it for a long time, and couldn't help asking, "Professor Mi, what's wrong?" Why are you all so shocked? ”

"Alas" melamine long sigh. "We've found something like never before!"

"This is also normal, doesn't this mean that this planet does not have a metal core, so it does not produce a magnetic field?" Plasticization said easily on the side.

"Look at this again, this gravitational pointer is swaying from side to side!" Ke Yan reminded from the side.

"So what?" Plasticization still didn't care.

"So what? Didn't you just say that there is a lot of metal titanium on the surface of the moon? Melamine asked rhetorically.

"yes!" Plasticization is puzzled.

"What is titanium metal for?" Melamine continued to ask.

"Important space metal, don't you still say it's an ideal space base?"

"We know it's the ideal space base, but don't others know it!" Melamine asked aggressively.

"You mean—" Plasticizer stopped talking.

"What do you mean?" The card clerk was confused.

"Child, you still don't understand, it turns out that the old dog Gangchang let you study history is hurting you, it doesn't matter what you learn, you still have to have the most basic scientific awareness!" Melamine patiently explained. "This starts with the composition of these planets and satellites, planets, moons and stars are different, stars are composed of hydrogen and helium, constantly fused, and then emitting heat and emitting heat, while planets and satellites are composed of elements with relatively large atomic numbers, can not emit light and exothermy, they generally have a relatively heavy metal core, all the material is attracted to the metal core and gathered on the planet. Due to the presence of metal cores, a magnetic field will form on the surface of the planet or moon, which will be deflected when our spacecraft passes by, and of course some will not have a magnetic field in the first place! But gravity does exist, and gravity is directed to the center of the earth, so when our spacecraft passes by, the gravitational pointer should point in one direction and deflect slowly, and it will never swing back and forth, which means that this planet does not have a core at all! ”

"Isn't it strange that there are no nuclei without nuclei?" The card clerk still doesn't know why.

"If there were no nuclei all the time, then all matter would have a center! Just now, plasticization has determined that there is metal on the surface of the moon, and the content of titanium is still very high, and now there is no magnetic field inside the moon, and there is no nucleus, which means that it is empty in the middle! Melamine continued to explain.

"That's right, that is, there was a nucleus in the center of this planet!" Ke Yan added.

"Where did the nucleus go?" The card clerk asked very bluntly.

"Think about it, the metal core, it used to exist, but now it's gone, and there is metal titanium on the surface, it is likely that it was mined by other creatures!" Clamp Jing said.

"Huh? Alien? The cardinal finally understood, and his eyes widened.

"Yes, their mining technology has reached a level that we can't imagine!" Melamine sighed.

"Maybe it's an error in the dashboard, let's check it again!" Huang Xun on the side said in a skeptical tone.

"Well, you go check it out!" Melamine nodded. "Keep flying, orbit the Earth!"

Melamine controlled the spacecraft to fly over the moon and then continued to fly, and after a while, the anomaly disappeared, and the spacecraft slowly approached the earth, and a blue planet appeared for the first time in front of these long-distance travelers, because the earth is surrounded by a thick atmosphere, and there are also wind, clouds, rain, and snow weather, so everything is not very clear, and sometimes it depends on the weather. Still, as far as the eye can see, the earth is full of greenery and bursts with life. At this time, the instrument panel on the spacecraft began to fluctuate again, this time it was normal, whether it was a magnetic field indication or a gravitational field indication, there was no problem, and melamine was sure that everything that had just passed by the moon was definitely not an anomaly in the instrument. After the spacecraft flew around the earth, it approached the moon again, this time melamine handed over all the tasks of exploring the surface of the moon to Huang Xun, and stared at the dashboard, just like last time, the spacecraft showed an abnormal situation before the probe was launched, the magnetic field pointer did not move, and the gravitational field pointer kept rocking from side to side. Melamine ordered Huang Xun to release the probe and control the spacecraft to turn and fly towards the far side of the moon, at this time the gravitational field pointer swayed more violently, and it was certain that the moon had no metal core.

At this time, Ke Xuan and Jia Jing also stared at the surface of the moon with their telescopes, and the first impact formed a huge crater on the surface of the moon, forming the shape of a crater, and the second impact formed a crater in another area. In addition, there were some small protrusions of unknown shape on the surface of the moon, and they couldn't figure out what they were, so they had to record them one by one. By this time, the spacecraft had already circled the moon, and the instrument anomalies on the spacecraft had disappeared. After melamine was set to fly automatically, he called all the scientists to his eyes, and said very seriously: "Now it has been determined, the moon is indeed somewhat abnormal, it is certain that this satellite originally had a metal core, but now it is gone, in the process of operation, the possibility of being thrown out is almost none, the biggest possibility is that it was excavated by other intelligent life." So now we are faced with the question, where do these intelligent beings go? We can observe the existence of habitable planets, and so can they, and if they also gather on Earth, it will have a great impact on our landing, and maybe our every move is under their watch, and now we have approached everyone to discuss a countermeasure, see what we can do? ”

"We've been flying in space for more than 200 years, and we're going to have to land anyway!" Art was the first to speak.

"Well, landing is a must, the key is to make those preparations before landing!" Melamine said earnestly.

"Are you afraid of being attacked by unidentified creatures during our landing?" Huang Xun asked very bluntly.

"It's a possibility!" Melamine took a deep breath. "In fact, not only in the process of our landing, but also in the future survival and reproduction, there will be threats in this regard!"

"It's simple, I send a few radio waves, and we don't have any ill will on the surface of these intelligent life, it's just that our planet can't survive anymore, so let's take refuge here!" Huang Xun said optimistically.

"Are you not going to survive? The environment wasn't destroyed by the two old dogs, Gang Chang, and I think it's a bit inappropriate for us to lie in the first place! Ke Yan objected.

"So what do you say?" Huang Xun asked.

"I think we should tell the truth!" Ke Yan said.

"It's not going to work!" Melamine shook his head vigorously. "To tell you the truth, we are ruined, they will definitely not allow us to land, even if we are lucky to land, I am afraid that they will always be wary of us, and may even strike preemptively at any time, everything for us has been ruined by Tsunatsune and Ganggang these two days old dog!"

"Then you can't lie to people when you come!" Ke Yan always insisted on his own point of view.

"Let's do it, send a few radio waves to all the intelligent life around the earth, just say that we are space immigrants, we have no malicious intentions, and don't talk about the rest!" Melamine said cautiously.

"Well, I'll send it now!" Huang Xun left the monitoring room and sent radio waves.

"What else do you have to do?" Melamine continued.

"Professor Mi, if there really is any life around here, it can only be on Earth!" The new biologist, Shi Lu, said.

"What do you mean......" Melamine asked, turning her head.

"Let's go around the planet a few times to see where they are, and just try to avoid them landing!"

"Well, that's what I thought too!" Jia Jing also said. "Let's go around the earth a few times, first draw a map of the world, which will be of great benefit to us to open up new horizons in the future, and then conduct a series of investigations on advanced lifeforms to avoid their territory as much as possible!"

"Well, that's the only way to do it now!" Melamine nodded. "We will be close to the Earth in a few more orbits of the Moon!"

At this time, Huang Xun came back, and Melamine asked, "The radio waves are being sent?" ”

"Sent out!" Huang Xun nodded.

"Any reply?"

"Where is it so fast!" Huang Xun said with a smile.

"Also, the foreign language you send, the other party may not be able to understand it!" Melamine quipped.

"Why don't you go and translate for him!" Huang Xun said solemnly.

"I want to know where they are, and I need you to send radio waves, so I'll just drive the spaceship to visit!"

"Haha" everyone laughed and continued to prepare for the flight around the earth. Melamine controlled the spacecraft to orbit the moon four or five times, throwing all the extra probes down, and each one of them smashed a crater on the moon. The results of the detection are no different from before, every time you will see the spectrum of titanium metal caused by the high temperature, and you will also see the pointer swaying, and after a few turns, everyone will get used to it, but the reply about other intelligent life has never been received. Melamine thought to himself, since you didn't reply, and you didn't send the spacecraft to attack us, it was a tacit acquiescence that we could land, so what are you waiting for, so she manipulated the spacecraft out of the lunar orbit and flew to Earth.

The spacecraft soon approached the atmosphere, and Melamine quickly turned its direction and flew flat and flew around the earth on the outer side of the atmosphere. The spacecraft continued to fly, and Ke and Jia Jing stared at the Earth with high-powered binoculars to draw a map of the world.

It didn't take long for the spacecraft to circle the earth dozens of times, and the map of the world was almost drawn, and Melamine called the scientists together again, and he first asked Huang Xun: "Do you have a reply to the radio waves you sent?" ”

"Nope!" I was afraid that they wouldn't understand, so I sent a few more simple messages, but there was still no news.

"Well, don't wait, with their technology, if they protested, they would have sent a spacecraft to intercept it, and now if they don't say anything, they will acquiesce to our landing!" Melamine said firmly.

"Is the terrain of the earth's surface mapped?" Melamine asked again.

"Well, it's done!" Ke Yan said. "This planet has a total of seven large landmasses, four large seas, and there is a gradually drying up land where intelligent life is rising and gradually spreading to nearby land, we try to avoid them, although with the current observations, they will not pose a threat to us for the time being, but considering that the metal cores of the moon have been mined, it is difficult to guarantee that more advanced species are not among them! At present, there are three major landmasses without intelligent life, but these three landmasses are related to the land where there is life, and it won't be long before they can land on these lands! ”

"You're saying we don't have a landing site right now?" Huang Xun couldn't help but ask.

"That's not it, in the north of the earth, there is a large enough land in the center of an ocean, which we have observed on the home planet before, is a relatively ideal landing site, and these intelligent beings will not have the ability to cross the ocean in a short time!"

"Well, let's land as planned." Melamine said. "Mr. Caron, how about the anti-friction coating on the surface of the ship?"

"I just checked it out and it's all right!" Caron replied dryly.

"Alright, Mr. Tsuyo, how's the landing flight path?"

"Nothing has changed!" Tsuyoke said confidently.

"Okay, let's land!" Melamine said that the spacecraft broke into the atmosphere, and the friction between the surface of the spacecraft and the atmosphere generated a large amount of heat, and the surface paint was evaporated by this heat, and the hull was kept at room temperature as much as possible. The massive air resistance slowed the ship very low, and the ship struck diagonally towards the continent of Atlantis with a line of fire. As it approached the ground, the melamine activated the button, and the ship's front drive began to spew fire forward, and the ship's speed became lower and lower, and finally poked steadily on the ground.

There was jubilation in the control room, and after a little relief, Melamine ordered everyone to step out of the spaceship, and these people who had been in space for more than two hundred years finally set foot on a smooth land again. Melamine opened the hatch and was the first to step out, followed by the other scientists, followed by civilians as well.

Melamine walked around to check the terrain, and the other scientists followed, and suddenly there was a flutter behind him, as if something had fallen, and Melamine hurriedly turned his head to look.

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ps. Chasing more children's shoes, are there any free appreciation tickets and starting coins~ The countdown to the 515 red envelope list is over, I'll pull a ticket, ask for an increase and appreciation vote, and finally rush it!