Chapter 190

When the old three was bluffing the children, the elder brother was holding a small red flag in his hand.

"Cough! Good evening, ladies and gentlemen. This time, we will take care of you. Please keep order after you get on the boat. Please line up and follow my little red flag. If the flag doesn't fall, you are not allowed to run around. If you lose one, I will be deducted from my salary! Thank you for your cooperation... "

The familiar tour guide's opening remarks made everyone gasp. In addition to seven or eight hands and feet, it's convenient to move on your own. The rest is either in a wheelchair or on a stretcher. You can run one and I'll have a look!

"Hello! Lao Liang, these two people who come to pick us up don't look so reliable What kind of SOS organization is really OK? " An old man with gray hair and wrinkled face said to the old man with rosacea sitting on the wheelchair beside him.

"Lao Yu has confirmed it. There should be no problem! Besides, as long as we are the old bones who are going to the ground, what can people expect of us? Maybe people don't like the technology we have in mind. "

Before they set out, these scientists were informed of some information from captain ghost and SOS organization in advance. No one can help but say a word about captain ghost's black technology. The painting style is so different from that of this era!

"Well, I'll see you later, and you'll know whether it's true or not..."

"Oh! Here we are Just then, the boss suddenly turned his head.

"Hua Hua ~" in the moonlight, like a Silver Whale slowly floating out of the water, everyone slowly opened their eyes

……

Earth secret base.

"Lagrange point?" Nie Yun looks in front of excited in old doubt way.

Information about the Lagrange point immediately came to his mind.

Lagrangian point refers to some special position in space, where the gravity and centrifugal force of two celestial bodies are balanced at this point, so that the third object remains relatively static with the first two objects.

For example, if a satellite is placed at the Lagrange point of the sun earth system, the satellite can remain relatively stationary with the sun and the earth, and can stably observe 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 very little fuel to maintain orbit stability, and in the space age, low operating costs, it has the best conditions to become a transportation hub!

This is just like the natural strategic position of Shanghai, which is bound to become an important transportation hub in the global trade!

"I didn't think about it before. Indeed, this feature is really suitable for placing monitors!"

Although Nie Yun has a huge amount of astronomical data in his mind, he is not a professional astronomer after all. His thinking still has a blind spot!

His mind immediately began to analyze the possibility of the existence of an alien probe at the Lagrange point

There are five Lagrangian points around a large object such as a planet or a star. Take the solar earth system as an example, these five Lagrangian points are L1 ~ L5.

Among them, L1 ~ L3 is on the line between the two celestial bodies.

The first Lagrange point, L1, lies between the earth and the sun, about a million miles from earth.

The sun can be observed on L1 without gravitational interference. The site is now occupied by human solar and solar wind layer by layer detector (SoHo) and deep space meteorological 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 line between the sun and the earth.

Because the sun, earth and moon are all behind it, the spacecraft in this position can clearly observe Mars and even the whole deep space.

At present, NASA's Wilkinson Microwave Anisotropy detector (WMAP) is measuring the residual thermal radiation after the big bang at L2 point.

These two Lagrangian points have been occupied by the above-mentioned probes from Europa and NASA, and these probes are very close to the earth. Recently, they have been renamed Nie in the "solar system investigation network" project. It is unlikely that the alien probes can engage in espionage activities under Nie Yun's eyes, which can be basically ruled out.

The third Lagrange point L3 is located on the earth day extension line opposite to the earth direction. It is separated from the earth by the sun. If the detector is at L3, then the difficulty of penetrating the stars to detect the earth may have broken through the sky, and can be basically ruled out.

So, only L4 and L5 are left!

They are located on both sides of the earth, which are the intersections of the vertical bisector of the sun earth line and the earth's orbit.

And these two points are one of Nie Yun's current detection blind areas!

"Well! From the perspective of celestial kinematics, this is the best possible position for the probe to exist! I prefer L4 and L5! " Yu Lao said a similar judgment with Nie Yun.

"Well However, considering that the other party's technology may be far beyond the earth, the possibility of other locations can not be ruled outIf you want to be very hidden, it is likely to be a passive detector. For the fixed target of the earth, the detection amount of passive detection is actually enough!

It is also possible to do the appearance camouflage, even optical stealth processing!

In addition, since it can not be discovered by the existing detection technology of the earth, the communication means of the other party should not be the traditional radio technology, perhaps the laser communication with excellent confidentiality, which is extremely difficult to detect, or the more advanced quantum communication, or even the communication means beyond my cognition... "

In the old side said, while observing Nie Yun's expression.

He used "the other party" many times in his words just now, but Nie Yun didn't have any expression about it. Obviously, he acquiesced in the existence of "the other party", and in his heart, he couldn't help but affirm his previous judgment.

It's not to find the location of the detector for yourself! The boss's opponent I'm so excited

How could Nie Yun not find Yu Lao's careful thinking, but sooner or later, he should let them know. He didn't tell them directly because even he knew little about the group of B stars, and even whether the detector existed or not was a problem.

If you make an own oolong, as the boss will be very shameless, OK!

Do you say: "Oh, I made a mistake. It's really embarrassing to frighten myself..."

In that case, the SOS organization on the tall will fall to the end, OK!

"Well! You've done a good job. I'll send a probe to inspect these two locations. No matter what the result is, as a reward, all the data from the sea wolf will be open to you! " Nie Yun said with a smile.

In the old moment excited, this kind of space observation data, for his astrophysicist, is the most precious thing!

But he will soon find out that the data from the sea wolf are not only in earth orbit

"By the way, your colleagues are almost here. As their responsible person and old acquaintance, go and say hello to them before that, which will make them feel more at ease.

In addition, I will arrange gene countercurrent surgery as soon as possible, and you are ready to prepare Nie Yun took a meaningful look at Yu.

"Haha! Don't worry, boss. Leave it to me! " Old Yu has a smile

www.novelhold.com , the fastest update of the webnovel!