Half-immortal civilization

The moon does not have a geosynchronous orbit; in fact, the moon's synchronous orbit has entered the gravitational range of the earth and will be pulled to become a satellite of the earth-it seems that it is really uncomfortable to have a powerful neighbor.

"Report the rising aircraft, the expedition team has arrived at the designated safe location. Zhou Xu reports!"

"Received, please make a record, all the shooting data needs to be collected this time." The voice of the pilot came from the Rise.

"understand!"

Zhang Chen and others took out their instruments and prepared to record the data of this shooting.Every data collection is the material for scientific development; it is also the basis for calculation for the next shooting.Science is accumulated little by little.

"Attention everyone, the countdown starts now. 59 seconds, 58..."

The electronic countdown sounded in everyone's headsets; a tense atmosphere began to spread.In space, every movement has a certain degree of danger.

“5、4、3、2、1、0！发射！”

Then I saw a bright silvery-white point of light violently shaking and receding in space; this is the space shuttle affected by the recoil.But in the dark space of the moon, there is nothing.

Of course, no one would ask stupidly, the high-speed flying projectiles cannot be captured by human eyes.Moreover, it will take a certain amount of time for the projectile to fall from space to the surface of the moon.

It’s just been waiting for more than three minutes, but there is still no change; some young geologists who have been in close contact with the railgun launch for the first time look at the personnel of the surrounding master company with some doubts: Did the launch fail or did it happen? skewed?
"Okay, okay. Don't think about it, bullets take time to fly! Even light needs time to fly!" Zhou Xu must of course explain to these curious babies: According to the boss's urine, these people probably escaped. If there is no such place as the Tathagata Buddha, everyone will basically be colleagues in the future.

After more than five minutes, a cloud of smoke and dust suddenly burst into the sky in front of them. Even if it was ten kilometers away, the smoke and dust could be seen violently rising into the sky, at least a few hundred meters high.The whole smoke and dust is in the shape of long strips, extending forward; the first ones are very tall and sparse; the latter ones are relatively short.But more mud and sand.It's almost blotting out the sun.

Rumbling... Until this time, the dull roar of the earth was transmitted into the space suit through the feet, allowing the team members here to hear the shallow moan of the earth.

"Success!" Some young people have already started to jubilate.Just drive forward.

"Wait a while!" Zhou Xu stopped these active young people; in fact, these so-called young people were all around 30 years old.Can be a decent geologist.Anyway, it takes some time to accumulate.But the space environment makes everyone excited; especially right now, seeing the collision of heaven and earth with their own eyes.A huge cloud of smoke rose into the sky, covering a range of three to two kilometers!Only at this time will one have the most intuitive feeling for human technology.It is by no means a lie to say that humans are now capable of smashing the earth into pieces.

"Wait until all the dust settles, and then go there." Zhang Chen was more careful and discovered the problem immediately.Now that there is so much smoke, dust and sand rushing into the "sky", it is still very dangerous.

The low-gravity environment made most of the sediment settle, and it took more than two hours; even so, there are still a lot of fine dust floating in disorder, some of which are even finer, like hazy tulle, and even Already drifting away towards the outer space of the moon.Of course, the moon is not small, and after all, only a very, very small part can really break out of the moon, which is almost negligible.

"Forward!" Zhou Xu is responsible for the safety of the team, and therefore, at such a time, when life safety is at stake, even Zhang Chen must obey the command.Safety comes with great responsibility.

When they got close, everyone looked at everything in surprise.At the beginning, it was some inconspicuous rubble, but with very fresh fractures, obviously different from the rocks on the surface of the moon, and even had a certain color.

And as they approached, more and more gravel, and the fragments became bigger and bigger, and at a distance of 45 meters from the crater, gravel the size of a human head was already scattered all over.The most shocking thing is that because the projectile is shot at an angle of 50°, what is presented to everyone is a crater with a length of more than 20 meters and a width of more than [-] meters; the front of the crater has been impacted and squeezed out. A small hill ten meters high.A large amount of rubble around it spread out radially, covering a distance of several hundred meters.At first glance, this looks more like a newborn crater!
"Hurry up to find the underground passage, check the situation of the passage, and calculate the damage value and influence of the rail gun this time." Zhang Chen reacted the fastest. After taking pictures and sampling on the spot, he immediately drove all the personnel to start working, racing against time.

It is not a simple matter to complete such a test work completely.Geological composition, crater depth, silt depth, radiation range, vibration range, etc., all need to be measured one by one; even when necessary, a [-]D simulation map must be created for archiving.

It took three full hours of intense work; unfortunately, this time the railgun shot was a little careful after all, and the channel with a depth of about 200 meters was not damaged - of course, this is also because the impact point is a bit far away In addition, the depth of the crater is 30 meters, and the depth of the projectile is 70 meters; 40 meters are caused by the backfilling of quicksand and gravel in the later period.

With detailed data, calculations are fast.In just 10 minutes, the supercomputer has come up with the answer: "The calculation has been completed, the position of the impact point should be 53 meters backward, and the angle of 55° is more appropriate; two consecutive launches."

"The Uprising has been received, everyone please retreat ten kilometers!"

Returning to the previous position, Zhang Chen couldn't sit still, stood on the roof of the car and looked into the distance, feeling silently in his heart, and at the same time silently doing calculations.I feel emotional because I never thought that the geological exploration, which is known for being cautious, will one day need to use rail guns to open the way!If my colleagues on the earth know, I don’t know what kind of weird words I will have; but I, in this position, feel a kind of pride and passion!However, this is indeed an effective solution and contingency!
At the same time, I was silently calculating; the first shot was 70 meters deep, and the backfill was 40 meters; after adjusting the angle and power, the second shot depth was estimated to reach a depth of 100 meters, and the depth of the backfilled sediment should be 60 meters; The next third shooting, on the basis of the second shooting, should have a depth of 120 meters, and backfill about 70 meters; even if it does not reach the depth of the cave by then, it will not have much impact on the cave.There is a little depth left, and the method will be decided after the test calculation.

The adjusted rail gun is more intense, and the vibration of the ground can be felt from a distance!The smoke and dust that covered the sky surged up and rushed to a height of nearly a thousand meters. (To be continued..)