"Sister Xia, our second batch of resources is ready. There are 20 spaceships in total. Please check them carefully..."
"Yeah, I understand. I will report it to the supervisor soon..."
Except for the first transaction between Earth and Moon, which was conducted by Colonel Chu and Bajie, all subsequent communications were conducted by Liu Ning and Zhang Yixia.
The two of them are also used to this mode of getting along, and they have not broken the barrier and maintained the previous communication method.
Since getting online with the moon, Liu Ning's work content has changed. In addition to shooting some materials for the TV station, she basically checks in at various tourist attractions every day, allowing Zhang Yixia to experience the scenery of the earth.
After a while of chatting, the call ended, and Zhang Yixia went to the command center to report the situation to Zhao Yu.
"Boss, the second batch of trading goods on the earth has taken off..."
In the command center, Zhao Yu was listening to Uncle Da's introduction to the gravitational lens and the dish-shaped spacecraft.
After hearing this, I responded casually.
After Zhang Yixia saw the projected flying saucer, her eyes lit up and she walked slowly to the door. When she saw no one was chasing her away, she stopped where she was.
"There are currently three modes of gravitational lensing..."
"One is to detect gravitational waves at close range. With our gravitational lens mother mirror as the center of the circle, it radiates in all directions. All independent celestial bodies with a mass greater than 100 grams within a diameter of 10 million kilometers can be monitored..." p>
"The second is to detect gravitational waves at medium distances, which requires the launch of auxiliary equipment. My suggestion is to launch a receiver to cover the entire solar system, so that every independent celestial body can be clearly discovered like the first mode...
…”
"The third mode is to receive gravitational waves at ultra-long distances, which can detect the depths of the universe. However, as the distance increases, the lower limit of the mass of the celestial bodies received will increase. All stars in the Milky Way can receive it, and smaller planets will have some
It can’t be detected..."
After listening for a while, Zhao Yu finally gained some understanding of gravitational lenses.
This thing is really useful. It can discover objects through gravitational curvature and simulate the shape of the object.
But there is a disadvantage, that is, large-mass objects can mask the gravitational waves of small-mass objects.
It's like detecting a planet, which can clearly show the shape, mass, speed and trajectory of the planet.
We can go one step further and cannot detect the conditions inside the planet.
Similarly, if there is a device hidden in the meteorite, the gravitational lens will not be able to detect it.
Of course, the advantages are also obvious. All independent celestial bodies with mass have nothing to hide.
Especially in the close-range detection mode, a small meteorite of about 100 grams, which may only be the size of an egg when placed in space, can still be detected by a gravitational lens.
"Yes, let's do what you said and cover the entire solar system. This way, even if an alien civilization comes in, at least it will know that they are coming..."
After Zhao Yu finished speaking, he rubbed his hands and looked at the saucer-shaped spacecraft eagerly.
This is a spaceship!
In the past five years or so, although there are aircraft capable of sending Star Destroyer Cannons to outer space, for safety reasons, Zhao Yu has never left the base once.
With the saucer-shaped spacecraft, he can go out for a walk.
"The first saucer-shaped spacecraft was built as a basic machine. In order to record data, I did not ask you to install other weapon systems..."
"The saucer-shaped spacecraft uses magnetic force to fly. The spacecraft is circular in shape and has a diameter of 108 meters..."
"There is only one-third of the space where the spacecraft can move. Weapons will also be installed in these places. The remaining two-thirds are magnetic frames and cannot be moved..."
"The spacecraft is equipped with many functions. The optical stealth system can refract light signals and achieve physical stealth..." This type of spacecraft is one that even if it appears in front of a person's eyes, he cannot see it with the naked eye. p>
"The plasma stealth system can refract all the incoming radio waves according to the predetermined trajectory, achieving the effect of being invisible on radar..."
"The magnetic tweezers system can create a circular magnetic field under the spacecraft. Within this magnetic field, passengers can ignore gravity and move up and down freely..."
On the 3D model, the flying saucer is ten centimeters above the ground, its bottom is open, and a weak white halo is emitted downward.
On the ground, a virtual villain stood there. He was illuminated by a white halo and instantly flew up into the spacecraft.
Zhao Yu's eyes lit up and he said with a smile: "This technique is pretty good, it's a bit interesting!"
Uncle Da nodded and continued the introduction.
The remaining functions are basically nothing eye-catching. They are all conventional technologies, mainly communication systems, radar systems, life systems, balance systems, etc.
On a technical level, they are all higher than Earth's, and can come and go quietly.
What satisfies Zhao Yu the most is that the flying saucer is extremely fast and uses magnetic power to reach a maximum speed of Mach 100 in a very short period of time.
The fastest missile on earth can only reach Mach 20.
This means that even if there is no weapon system installed on the flying saucer, there will not be any danger.
Of course, Zhao Yu has no intention of going to Earth before the U-shaped battleship comes out.
He is not afraid of ten thousand, but afraid of the worst. When the time comes, even if he wants to go to the earth, he will definitely bring a convoy fleet to be able to deal with all possible crises.
"Boss, now that the flying saucer is built, how about I help you test it out?" Zhang Yixia on the side saw this and couldn't help but interject.
"You guys, do you want to go to Earth?!"
Zhang Yixia scratched her head and smiled silly.
Zhao Yu shook his head, he really needed someone to test drive.
He nodded and said: "The first ship must be kept for Uncle Da to archive records. When the second ship comes out, you will go to the earth. I have only one request. The flying saucer must be invisible throughout the entire process and not be exposed..."
"Yeah!"
……
Three days later.
"Chichi~~!"
On the surface of the moon, 20 rockets from the earth landed one after another.
This is the second transaction between Earth and Moon.
At the underground entrance, the Xiaotians are on standby, ready to go out and receive resources at any time.
After all, Earth's aircraft are lagging behind. When landing, not only will there be a parachute-like fairing on the head, but also flames will continue to spurt out from the bottom of the rocket, slowing down the landing speed of the aircraft.
Most of the rockets basically have no problems and slowly descend towards the predetermined position step by step.
Just a few kilometers above the ground, there seemed to be some malfunction in one of the rockets. One of the burners at the bottom suddenly went out.
The entire rocket lost its balance instantly and the body began to tilt.
"Chichi~!" "Chichi~~!"
The fuselage twisted several times in mid-air, but failed to stabilize its body, and the landing trajectory also changed.
Instead of landing at the planned location, it fell towards the crater where many Xiaotians were hiding.
This is the only entrance and exit of the lunar base that is exposed to the earth. Although it is far away from the core of the base, it is still part of the base.
Just when the rocket was about to hit the ground, a light curtain suddenly rose from the ground.