Mecha Star Wars.

In Lin Fan's view, stars can move freely in space. Asking her to identify the unknown object should be the fastest and best way.

But Zhu Cunjun shook his head, "You don't need to go, it's too dangerous."

After the aircraft landed, the Aerospace Management Center sent several more missions to Xingchen.

Among them are the flight distance test to the apogee, and the orbit of the moon around the Orchid Star.

During Lin Fan's boring flight, she watched the gray moon gradually get bigger and rounder, filling her entire field of vision. Then it passed by her and gradually moved away behind her...

Because the mission order only allowed orbit, not landing, she could only watch helplessly.

Landing on the moon is an achievement that will last a lifetime if you talk about it!

Her heart was itching, and in the end she just stopped thinking about it.

The Space Management Center is also slowly exploring the capabilities of the stars.

Science is never achieved overnight. Even if the stars show obvious advantages, they dare not take too big a step in space without foreign aid.

It's trivial to talk nonsense. If you lose the stars, then the gain outweighs the loss.

Therefore, each mission is progressing. If nothing unexpected happens, we should be able to land on the moon next time.

Judging from the current data, the farthest distance that the stars can reach is 40 kilometers, which is also the distance from Lanxing to the moon. And in the orbit of the earth and the moon, it can move freely and is not affected by other external gravity.

But in the photo, the unknown object is located in the Kuiper Belt outside the orbit of Neptune.

"What is the Kuiper belt?" The new term touched Lin Fan's blind spot again.

Zhu Cunjun calmly opened the content he had searched for and added to his favorites. "It's the asteroid belt. You know the eight major planets, right?"

"I know." Lin Fan nodded and replied, "I learned it at the launch center before. According to the distance from the sun, they are Mercury, Venus, Orchid Star, Mars, Jupiter, Saturn, Uranus, and Neptune. Because the moon rotates around the Orchid Star, Therefore, the satellites belonging to Lanxing form a unique earth-moon system."

"Yes." Zhu Cunjun looked at her with a smile, "Then you should also know that there is an asteroid belt between the orbit of Mars and the orbit of Jupiter."

"Yes." Lin Fan continued, "Affected by the gravity of the sun and Jupiter, there are almost 50 asteroids gathered in this area. It is the densest area of ​​​​asteroids and is also the main belt asteroid."

Asteroids are celestial bodies that orbit the sun but are much smaller in size and mass than planets. They are the most numerous celestial bodies in the solar system.

There are generally several theories about the formation of asteroids, among which the theory that "evolved from planetesimals during the formation of the solar system" is the most mainstream.

There are already a lot of them in the asteroid belt, but they are still growing every year.

To put it simply, asteroids are all small solar system objects that are not comets and are within 1 meter to 1000 meters in diameter that revolve around the sun.

Comets, the legendary broom stars, are also stars that revolve around the sun.

Its volume and mass are very small, but its external shape will change differently depending on its distance from the sun.

When it is far away from the sun, it is just a dirty ball of ice and dust.

But once it approaches the sun, under the influence of solar radiation, the comet's material changes and decomposes into a comet head and a comet tail.

Therefore, comets are particularly easy to distinguish. When you look up at the starry sky, there is a celestial body with a tail in the sky that looks like a broom, which is a comet.

Then someone may ask again, isn’t that a shooting star?

of course not.

Meteors refer to meteoroids running in space, that is, when cosmic dust or solid blocks approach the blue star, they are attracted by the star's gravity and enter the blue star. When they pass through the atmosphere at high speed, they produce light trails caused by electron transitions.

Most of the visible meteors are about the size of grains of sand and will burn up before hitting the ground. A small number of meteorites that remain on the ground are called meteorites.

Moreover, in terms of internal structure, the meteorite contains relatively large amounts of iron, nickel, sulfur, silicon and other minerals that are originally found on the blue star.

Therefore, meteorites are also generally called meteorites. In ancient times, they were even used to make swords.

The internal materials of comets are mainly water, methane, cyanogen, nitrogen, carbon dioxide, etc., so under certain conditions, they condense into ice.

In conclusion.

Comets are sun-orbiting objects whose shape and brightness are affected by their distance from the sun.

Meteors are a light effect produced by friction and combustion of meteoroids after they enter the atmosphere. And because the internal materials are different, the color and shape of the combustion are not fixed.

Book follows text.

Seeing Lin Fan talking eloquently, Zhu Cunjun couldn't help but sigh in his heart - young people's brains are easy to use, and he continued to quietly switch web pages with the mouse.

"That's right," he appreciated. "Now that we know the asteroid belt, the Kuiper Belt is easier to understand. It is a dense disk-shaped area of ​​​​celestial bodies outside the orbit of Neptune and near the ecliptic plane. You can think of it as An enlarged version of the asteroid belt.”

The ecliptic plane refers to the orbital plane of the blue star orbiting the sun.

When the Lanxing orbits, the sphere is tilted to a certain extent. Therefore, the equatorial plane and the ecliptic plane form an angle, and the angle is about 23 degrees.

Although this angle may not be large, when it extends in the vast space, it is not small.

The asteroid objects in the Kuiper Belt are basically distributed in this angular area, forming a three-dimensional ring similar to a donut.

According to scientific estimates, the width of the Kuiper Belt is about 20 times that of Jupiter's asteroid belt, and its weight is 20 to 200 times greater.

Just looking at the numbers, you can imagine that there are countless celestial bodies in it.

Lin Fan's eyes widened, "Isn't that a large, densely packed area of ​​asteroids?"

"Yes, because it is at the edge of the solar system, there is a saying that the Kuiper Belt is the protective belt of the solar system, but there is also a saying that the Kuiper Belt is an obstacle to outward exploration."

"Both statements reflect the barrier function of the Kuiper belt." Lin Fan quickly reacted, "Is it because there are too many asteroids? It makes it difficult for stars or other objects from the outer solar system to enter the solar system?"

Zhu Cunjun nodded, "The Kuiper Belt itself has orbital resonance, and Neptune's gravity makes these orbits unstable. Some stars will be sent into the solar system, and some will be dispersed and sent outward, thus forming many stars inside the Kuiper Belt. Unstable white space.”

"And because of different gravitational forces, different orbital areas, different sizes and populations of celestial bodies... affected by various factors, the resonance frequency inside the Kuiper Belt is also different. I don't understand the specific principle, but the final result is that it forms a A natural barrier stands between the inner and outer solar systems.”

After all, Zhu Cunjun is not engaged in celestial body research, so it is good to be able to understand these things.

"But you said that the unknown object is in the Kuiper Belt?" Lin Fan didn't understand again, "Since it is a barrier, then..."

"Assuming that it is really a spaceship or something like that, it would not be surprising if it could pass through the Kuiper Belt safely." Zhu Cunjun picked up his tea cup and took a sip of water. "What is difficult for us may not be difficult for other levels of technology." Difficult. Didn’t you say that Nuwa came and left in a spaceship 5 years ago?”

That's right, Lin Fan forgot about this.

The shuttle is still buried underground. Since it can get in, they must have a way.

"Besides, this isn't the first time." Zhu Cunjun said earnestly, "In the past few years, country p discovered an object suspected to be a spacecraft in the Kuiper Belt."

First of all, I wish all the students taking the college entrance examination today that they will be able to gain admission to their ideal colleges and universities.

I carefully checked the information for today's science popularization. I didn't expect to learn astronomy at this age.

After all, we are going to go to space later, and we have to have a concept of these stars, right?

There are too many nouns so I’m afraid people won’t understand them, so I explain them in the text. You can’t expect everyone to read a novel and go to Baidu, right?

It would be best if everyone could understand the content of the novel, and it would be even better if it could add some additional knowledge.

Haha, this is science fiction. Although only a little bit.

Hehe hehe