Chapter 189: Lagrange Point

When the third boy was scaring the children, the boss was holding a small red flag in his hand.
"Cough! Good evening, grandpas and grandpas. This time, we are responsible for picking you up. We also invite you to stay in order after boarding the ship. You will line up to follow my little red flag. If the little flag does not fall, you may not run around I lost one but I was deducted! Thank you for your cooperation ... "
This familiar tour guide's opening remarks made everyone twitch, and look at the presence. In addition to the seven or eight hands and feet, it is convenient to be able to move on their own. The rest is either in a wheelchair or lying on a stretcher.
"Hey! Laoliang, these two people who came to pick us up, looked so unreliable ... what kind of SoS organization is really okay?" A gray-haired, wrinkled old man sat next to him The rosacea old man in the wheelchair said.
"Old Yu has confirmed it, there should be no problem! Besides, with our old bones that are fast to the ground, what can people do to us? With the technology in our minds, maybe they really can't be looked down upon."
These scientists were informed in advance of Captain Ghost and SoS organization's information before departure. No one can say a word about Captain Ghost's black technology. The style of painting is really too different from this era!
"Well, seeing the old side in a while will make it clear whether this is really true ..."
"Oh! Here!" Just then, the boss suddenly turned his head.
"Wow ~" Under the moonlight, like a silver giant whale slowly surfaced, everyone slowly opened his eyes ...
...
Earth secret base.
"Lagrange?" Nie Yun looked at the excited Yu Lao in front of her, wondering.
Information about Lagrange points immediately appeared in his mind.
Lagrangian point (Lagrangianpoint) refers to some special position in space, at this position, the gravitational force and centrifugal force of two celestial bodies balance at this point, so that the third object and the first two objects remain relatively stationary.
For example, if a satellite is placed on the Lagrangian point of the Sun-Earth system, then the satellite, the sun, and the earth can remain relatively still, and they can perform stable observation activities on the two.
This characteristic of Lagrange point makes it have considerable strategic value in the space age!
Because it does not need to consume fuel or consume very little fuel to maintain orbital stability, and in the space age, the operating cost is low, and it has the best conditions to become a transportation hub!
This is like Shanghai's natural strategic position, destined to become an important transportation hub in global trade!
"I didn't consider this before, indeed, this feature is really suitable for placing a monitor!"
Although there is massive astronomical data in Nie Yun's mind, he is not a professional astronomer after all, and there are still blind spots in his thinking!
He immediately began to quickly analyze the possibility of the presence of alien probes at Lagrange Point ...
There will be a total of 5 Lagrangian points around a large object such as a planet or a star. Taking the Sun-Earth system as an example, these 5 Lagrangian points are L1 ~ L5.
Among them, L1 ~ L3 are on the connection between the two celestial bodies.
The first Lagrangian point L1 is located between the earth and the sun, about one million miles from the earth.
Observing the sun on L1 is free from gravitational interference. This point is now occupied by human
Solar and Solar Wind Layer Detector
(SoHo) and
Deep Air Image Satellite
.
L2 is also located about 1 million miles from the earth, but unlike L1, it is not between the sun and the earth, but on the extension of the sun and the earth.
The spacecraft in this position can clearly observe Mars and even the entire deep space because the sun, earth and moon are behind it.
At present, NASA's Wilkinson Microwave Anisotropy Probe (wMAP) is measuring the thermal radiation remaining after the Big Bang at the L2 point.
These two Lagrange points have been occupied by the aforementioned probes from Europa and NASA, and these probes are very close to the earth. Not long ago, they have been renamed Nie, alien in the "Solar System Investigation Network" project. The detector is unlikely to be able to engage in espionage under Nie Yun's eyelids, which can basically be ruled out.
The third Lagrangian point, L3, is located on the extension line of the Earth-Sun opposite to the direction of the Earth. It is separated from the Earth by the Sun. If the probe is at L3, then the difficulty of penetrating stars to detect the Earth may have broken Skyrim can basically be ruled out.
Then, there are only two points, L4 and L5!
They are located on both sides of the earth, and are the intersections of the vertical bisector of the Sun-Earth connection and the Earth's orbit.
These two points are one of Nie Yun's current detection blind spots!
"Well! From the perspective of celestial kinematics, this is the best position that the detector may exist! I prefer the two points of L4 and L5!" Yu Lao said a similar judgment to Nie Yun.
"Um ... but considering that the other party's technology may be far beyond the earth, the possibility of other locations is not ruled out ...
If you want to be very hidden, this is probably a passive detector. For the fixed target of the earth, the detection amount of passive detection is actually enough!
It is also possible to disguise the appearance and even deal with optical stealth!
In addition, since it cannot be discovered by the Earth ’s existing detection technology, the other party ’s communication method should not be the traditional radio technology, or it may be extremely difficult to detect, excellent confidential laser communication, or more advanced quantum communication, even beyond My known means of communication ... "
Yu Lao observed Nie Yun's expression while talking.
He just used the "party" many times in his remarks, but Nie Yun didn't say anything about it. Obviously he defaulted on the existence of the "party", and he couldn't help but be more certain about his previous judgment.
Sure enough, it is not to find the location of the detector for yourself! The boss's opponent ... Suddenly so excited ...
How could Nie Yun not find Yu Cao's careful thinking, but sooner or later they should let them know, not to tell them directly because even he himself, knows very little about this group of B-stars, even if the detector exists or not Questions.
If you get a oolong by then, will you be ashamed as a boss?
Does it say: "Oh, I made a mistake. It turned out that I was scaring myself, so embarrassing ..."
If you say that, the tall SoS organization will fall into the end.
"Well! You are doing very well. I will send a detector to investigate these two locations on the spot. Regardless of the result, as a reward, all the detection data of the Sea Wolf will be open to you!" Nie Yun smiled.
Yu Lao instantly excited, this kind of space observation data is the most precious thing for astrophysicists like him!
But he will soon discover that the detection data of the Sea Wolf is not only in the earth's orbit ...
"By the way, your colleagues are almost here. As their principals and old acquaintances, go to say hello to them before and let them feel at ease.
In addition, I will arrange the genetic reflux surgery as soon as possible, and you are also ready to prepare. Nie Yun gave Yu Lao a meaningful look.
"Hey! The boss is at ease, give it to me!" Yu Lao hey smile ...