Chapter 190 (1/2)
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.