"How reliable is this conclusion?" Zhou Xin asked. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

"More than 80%." Atlas replied, "In any way, a magnetar is unlikely to be a complete planet." ”

"If that's the case." Zhou Xin continued to ask, "Then even if this planet was once the core of a planet, what about the outer layers of this planet?" Where have they gone? ”

"Far away, close at hand." Atlas sold off a bit.

Remembering Atlas's previous words, Zhou Xin understood a little, "You mean that silicon star?" ”

"Brother Captain is so smart." Atlas complimented, "That's the planet." ”

"That is, magnetars and silicon stars turned out to be two parts of the same planet?" Zhou Xin continued, "Then how did the original entire planet split into what it is now?" ”

"This—" The little girl looked embarrassed, "The cause of the splitting of the primordial planet is still under investigation, but the results should be available soon." As she said this, the little girl suddenly showed a listening expression, and after a few seconds, her expression suddenly became happy, "This is it, I have finally found it." Hearing Atlas's inexplicable words, Zhou Xin showed a puzzled expression, and Atlas explained to Zhou Xin after saying this, "Brother Captain, the probe has finally found crucial evidence." As she spoke, the image behind the little girl changed, revealing a strange gray-white patch of ground.

"Where is this? Also on magnetars? Why didn't we find out before? Zhou Xin asked several questions in a row.

"On the magnetar, of course." The little girl showed a natural expression, "This is something that people finally found from under the soil, and of course they couldn't find it at first." ”

Looking at this piece of ground whose color is completely different from the magnetar surface he saw before, Zhou Xin continued to ask: "How can the color of this piece of ground be completely different from that of other places, and what is its composition?" Why is it here? ”

"The composition of this ground - you must be familiar with it, brother Captain." Atlas replied, "It's silica." ”

Zhou Xin was a little surprised to hear Atlas's answer, but after thinking about it, he took it for granted, so after staying for a few seconds, he motioned for Atlas to continue to introduce the strange ground he had just found.

The little girl nodded, then picked up the stick and knocked on the white part of the ground on the screen, "Just like the captain's brother saw, this place is different from the rest of this planet, according to the investigation of the probe, this place on the screen is covered with a thick layer of silica, and the composition of these silica is exactly the same as that on the silicon star, which once again illustrates the relationship between the two planets." More importantly, after detailed analysis, it was found that although the composition of the silica in this place is the same as that on the silicon star, the crystal structure is very different, and this special crystal structure proves that the silica in this place has been subjected to high temperature and high pressure for a long time. Moreover, people found traces of violent impacts in this place on this piece of ground, and the impact was even so violent that the originally loose silica particles condensed together, forming a lumpy glass-like substance. As he spoke, Atlas shifted the picture to that place, and Zhou Xin saw that there was a huge bowl-like structure on the ground, the whole structure was transparent blue-green, and there were radial patterns on the edge of the bowl, which looked like a crater.

"This place should be the first point of impact." The little girl said, pointing to the bowl-shaped spot.

"Does this mean that the planet has been hit by meteorites?" Without waiting for Atlas to come to a conclusion, Zhou Xin preemptively said it.

But what I didn't expect was that the little girl on the screen shook her head at this time, "Brother Captain, what you said is not very accurate, it is not that this planet has been hit by meteorites, but the predecessor of magnetars and silicon stars - that primordial planet has been impacted. ”

Recalling Atlas's previous words, Zhou Xin showed an expression of even more surprise than before, "Has the primordial planet been hit?" According to what you said before, this planet should be the core of the primordial planet, what kind of violent impact can directly hit the core of the primordial planet through the protection of the earth's crust and mantle? ”

"What kind of violent impact, of course, is a direct impact of two planets." Atlas said another surprising message, "Only this level of impact can split an originally huge planet into two smaller planets." ”

Then, she began to fully introduce her research results on these two planets, "According to the current investigation results, these two planets should have been one planet, and magnetars are the core of this planet, and silicon stars may be composed of fragments of the planet's crust and mantle. Originally, the planet orbited the star well, but then, out of nowhere, a planet with a mass similar to it flew in, and the two planets collided by chance. Speaking of this, Atlas paused slightly, as if she wanted everyone to digest the scene she described first, and after a while she continued, "This two-star impact was so violent, it even completely shattered the crust and mantle of the primordial planet, and finally even hit the core of the planet, but fortunately, the hardness of the core is relatively high, and the force of the impact is buffered by the earth's crust and mantle, so the core is completely preserved, forming the current magnetar, However, there are still obvious impact marks on the planet. ”

"Wait a minute." After Atlas said this, Zhou Xin had a question, "Are you talking about the collision of two stars?" One of the planets became what we see now, but what about the other planet, where did it go? ”

"A small part of it is mixed with the scattered material of the primordial planet, and I will talk about the rest of the impact planet later, brother captain, don't worry." Atlas replied and then continued what he had just said, "Although the core of the primordial planet was preserved intact, but under the huge impact force, the core was still knocked out of the original orbit of the primordial star, and coincidentally, the direction of the core flight was in the direction of the star, and under the action of the star's gravitational pull, the core did not fly far, but stopped not far from the other side of the primordial planet's orbit and continued to orbit the central star." As for the crust and mantle of the planet, after the violent impact, they were directly blown away by the violent shock wave, scattered into fragments of different sizes, and even a part of the material was directly scattered into dust, a large part of these blown away materials directly out of the orbit of the original planet, I don't know in what direction they flew away, but there is still a small part of the material that has not left its original position, and these remaining materials have been orbiting the star for a long time in a state of fragments. Then under the influence of gravity, it slowly regrouped into a planet, and this planet is the silicon star we first saw. Then, she added, "Of course, according to people's calculations, the location of the silicon star is affected by the magnetar, so the two planets are just at opposite ends of the same orbit, so that the gravitational pull between them does not affect each other and can orbit around the center of the center normally." ”

Voyager then began to explain the strange phenomenon of the two planets they had observed earlier, "Because of this, these two newly formed planets have formed what we have now observed, the predecessor of the magnetar because it came from the core of the planet, so it is dense and rich in heavy metals; The predecessor of the silicon star is the crust of the planet, so it has a low density, and the main component is silica. ”

Even though Atlas's explanation was so detailed, Zhou Xin still didn't believe her conclusion, "Your conclusion is too exaggerated, two planets collide, the probability of this kind of thing happening is too low, planets are not like smaller asteroids and meteors, their orbits are still relatively fixed, two planets collide, how is this possible." ”

The little girl rolled her eyes, "Brother Captain, what you said is that the two planets are in the same galaxy, but if one of the planets is not from this galaxy, but a wandering planet, then the probability of an impact event is greater." ”

"So the other planet that collided with the primordial planet was a wandering planet?"

"People can basically determine this, and the results of the analysis to be mentioned below are also related to this impacting wandering planet." Atlas replied.

"Are there any other analyses?" Zhou Xin's attention was immediately attracted.

"Of course, there is, otherwise Brother Captain, why do you think I would have spent so long researching." Atlas continued, "This galaxy is really interesting, it's been a long time since people have spent this long studying something. Then she brought up the planet that the probe had already surveyed before, "Brother Captain, do you remember the planet in the outermost orbit of that galaxy?" ”

"Do you mean the planet whose core is exposed?" Zhou Xin immediately remembered, "Isn't that planet already explored?" Do you know what exactly hit that planet? ”

"Hehe, they're amazing." The little girl on the screen showed a smug look, and then she began to whet everyone's appetite again, "Didn't you have doubts when you saw that planet, brother captain?" The impact on that planet is not weak, has its orbit not changed? ”

"Don't sell it, hurry up and say the conclusion." Zhou Xin urged.

"Alright, alright, let's say it." Atlas continued, "They simulated the impact of the planet, and then they found out that the planet's original orbit was not like this. Speaking of this, the screen on the screen switched to the appearance of the entire galaxy, and Zhou Xin saw that an orbit that had not appeared before was marked with a yellow line on the outermost part of the galaxy, which was basically on the same plane as the three orbits on the inside, and intersected with the inclined orbit of the outermost known planet. Atlas pointed to the yellow orbit, "This is the original orbit of the outermost planet that people calculated, and it only became the kind of tilt that it was later after the impact. ”

"Does that mean anything?" Zhou Xin looked at the orbit before and after the change on the screen and asked, "Of course, the orbit after the violent impact will change, and I know this." ”

"People are just mentioning the results of the calculations." "The key question is not the change in orbit, but what exactly caused it, don't you want to know what hit this planet, brother, Captain?" At this, Atlas had a mysterious expression on his face.

Hearing Atlas's question, everyone in the command cabin showed a contemplative expression, looking at Atlas's strange expression, Zhou Xin felt in her heart that she couldn't be targeted, since this question is raised now, then the impact of this planet must be related to the information mentioned before, recalling what Atlas said before, Zhou Xin had an idea in his heart, "It can't be the planet that collided with the primordial planet before." When he said this, he was still a little unsure.

"That's it." The little girl clapped her palms, "Captain, do you know?" What did they find in the outermost planetary material brought back by the probe? After a pause, she replied to herself, "It's still the familiar silica, but the orbit of that planet has long been calculated, and it is impossible to collide with the innermost orbital planet, so how did this unique silica on that planet come about?" Brother Captain, to give you a hint, the location of the silica was found to be at the impact location of the outermost planet. ”

According to the clues given by Atlas, Zhou Xin finally connected everything, "In other words, after the unknown planet hit the original planet on the innermost side, it flew to the outermost orbit and collided with the outermost planet?" That's why the material from the inner planets is brought to the outer planets. ”

"That's pretty much it." The little girl nodded, "But the process in the middle is still a little different, after the unknown planet hit the original planet about 2.7 billion years ago, the remnants of the unknown planet still orbited the star for a long time, and then it may have collided with the outermost planet more than 100,000 years ago, and after changing the orbit of the planet, the unknown planet did not know where it flew." ”

"Is that really the case?" So far, Atlas has basically finished explaining what major events have happened in this galaxy, but Zhou Xin is still a little unconvinced in his heart, and he confirmed to Atlas again......