(Not modified, please ...... later) ）

"Evidence?"

Seeing Xiaoguang ask this question,

Yang Meng floated down in front of the porthole,

Looking at the starry sky around the Ross 128 system,

Because the starlight of Ross 128 is not very strong,

can't block out the brilliance of the entire galaxy,

At this time, the astrolabe of the Milky Way can still be clearly seen.

And Yang Meng looked up,

It's like above a silver river,

Where is there a cloud of nebula-like material made of bright starlight and blue and pink,

That's the Magellanic Galaxy, 200,000 light-years from Earth.

Looking at such a moon that can be seen by all civilizations in the galaxy,

杨勐 says:

"Xiaoguang, how many such satellite galaxies do you think there are around our galaxy?"

Seeing Yang Meng ask him about the number of satellite galaxies, the small light flickered obviously:

"Your consciousness says there's such a cloud of light around you!"

"That's right!"

"There are at least 30 moons and galaxies of the Milky Way discovered so far!

Some of these satellite rivers are still hidden in hidden zones, and we may never find out about them!"

"Concealment Zone, wait, what do you mean there are so many river systems around the Milky Way?"

"Do you mean ......?"

As a small light that has existed for countless years, although it is a bit of a maze, it is also a very smart existence.

It didn't ask Yang Meng to explain what the concealment belt was,

Rather, it came to mind what it means that there are a large number of satellite rivers around the Milky Way:

"That is, these satellite river systems are near and far,

Some of them may even be swallowed up by our river system?"

"That's right!"

Seeing that Xiaoguang immediately thought of the crux of the problem, Yang Meng nodded and slowly explained:

Since we confirmed that the Magellanic galaxy is outside the galaxy of Milky Way moons,

has been looking for other moon galaxies in the Milky Way.

After that, we found that the Milky Way is not empty around it, and there are a large number of galaxies like this.

But some of these galaxies are around the Milky Way,

And some just rub shoulders with the Milky Way,

For the sake of convenience, we refer to this irregular river system, which is much smaller than the Milky Way, as a dwarf river system.

"In that case, a dwarf river system has crashed into the Milky Way!"

"Well, some of these dwarf rivers have crashed into the Milky Way, and some are still crashing into them!"

Speaking of this, Yang Meng paused briefly,

After thinking that Xiao Yin would translate the time he said into the timekeeping method used by the Rutan Star civilization,

He continued:

"In 2006 we discovered a dark river system called the Pastoral Dwarf Galaxy.

This river system is only 190,000 light-years away from the center of the Milky Way.

In our subsequent observations, we found that

This low river system has an extremely elliptical orbit.

has been out of the orbital cycle of the moons of the Milky Way,

The structure of the river system is also due to the tidal forces of the Milky Way.

The star stream torn apart into two intersecting streams gradually falls into the Milky Way!"

"Starstream, what's that?"

This unfamiliar noun Xiao Yin is not translated in detail, so it caused Xiao Guang to ask directly,

Hearing such a question, Yang Meng also explained slightly,

There is a big difference between a river system and a star system,

How big are the galaxies?

It can only be a binary star system composed of several stars, with the addition of their respective planets,

The space it occupies cannot exceed a light-year distance.

can be a river system,

A behemoth like the Milky Way,

Its diameter is more than 100,000 light-years,

Among them are countless stars,

Even the Magellanic Galaxy, which is a satellite of the Milky Way,

It is also more than 5,000 light-years in diameter, and there are more than 10 billion stars in it.

"Wait, how do you know there are tens of billions of stars in that cloud of light!"

Yang Meng, who was about to continue, was suddenly interrupted by Xiaoguang and was stunned for a moment,

Xiaoguang is very smart at times, but sometimes it is very strange,

Seeing it raise the bar on this question,

Yang Meng shook his head lightly and said:

"Because we can directly see the whole picture of the Big Magellanic Galaxy, there is nothing in it!"

"I see, we in the Milky Way cannot accurately determine the total number of various celestial bodies in the Milky Way.

But we can see directly that the Magellanic Nebula is easy to tell the number of stars in it!"

"If so, the star stream of which you speak,

It's the juice that the Milky Way spills out as it tears apart other dwarf river systems!"

"Ugh...... That's how you can understand it!"

Seeing that Xiaoguang has understood what the star stream is,

I swallowed back a large piece of theoretical knowledge that had come to my mouth.

"In other words, the Ross 128 galaxy in front of me is the product of a dwarf galaxy star stream!"

"Part of the Kirin Ring, to be exact!"

"What is the unicorn ring?"

"You can think of it as a ribbon of star debris scattered around the Milky Way as it was swallowed up by the Milky Way!"

"It's just wreckage!"

"Don't underestimate this ribbon structure,

The smallest structure of the unicorn rings that humans have observed has more than 100 million stars!"

"Then the Ross 128 galaxy is left over from the Kirin Ring!"

"If it is more accurate, it is the open cluster thrown out by the unicorn ring, because the open cluster is under the action of a common gravitational source,

Traveling in the Milky Way,

Ross 128 was unable to keep up with the team and ended up here!"

Hearing the small light here, it continued to flicker, and it seemed to show more questions about Yang Meng's explanation,

"So what exactly is the galaxy that is swallowed by the Milky Way that produces this phenomenon?"

Yang Meng, who had been prepared for a long time when he heard this question,

An image was shown to Xiaoguang,

There's a dark nebula structure on it,

And it can be clearly seen that there is a clear ribbon structure behind it.

"This is the Canis Major dwarf galaxy that we discovered in the month,

This galaxy, hundreds of millions of years ago, may have been just one of the universe's independent river systems,

But about 1.7 billion years ago, it was captured by the Milky Way and gradually devoured ......."

Looking at the image shown by Yang Meng, the small light flickered, as if thinking about something:

"I see......

Hearing Xiaoguang's exclamation voice,

Yang Meng suddenly thought of something, and asked out loud:

"Since your civilization has existed for so long,

Then you should have noticed the whole process of the dwarf galaxy being swallowed up by the Milky Way.

Didn't you post anything strange?"

Hearing this question, Xiaoguang flickered and responded:

"We have observed that there was a time when a large number of stars were twinkling in the starry sky and their orbits were chaotic.

Presumably, that was the beginning of our river system devouring dwarf galaxies."

"So you really noticed......

At this time, Yang Meng glanced at the flickering little light,

Right

He couldn't make a specific judgment on the truth or falsehood of Yu Xiaoguang's words.

After all, the time of human existence is too short,

The emergence of modern astronomy is only a few hundred years.

The process of the Milky Way devouring other galaxies started with 1 billion years.

If you want to fully record the process of river swallowing at once,

It's not possible for humans today.

Fortunately, humanity is now witnessing the process of the Milky Way devouring the dwarf galaxy of Canis Major.

It was at this moment when he communicated with Xiaoguang,

There are a large number of stars in Canis Major that have been snatched by the Milky Way.

It can be said that the Milky Way galaxy on time at this moment is the stage of eating very happily,

Although humans cannot observe the entire devouring process,

But if human beings can spread out in the universe and exist for hundreds of millions of years,

You can also see the scene where the constellation is torn and eaten by the Milky Way.

Even the Great Magellanic Galaxy, according to the orbital period estimated now, will be eaten by the Milky Way in hundreds of millions of years.

If humans had been around a little longer,

You can even see the scene of the Milky Way meeting the Andromeda River system millions of light years away,

It's just that the Virgo galaxy is much larger than the Milky Way.

It is also unknown who will eat whom at that time.

For a while, Yang Meng was immersed in the extremely distant things in the future.

And the small light is also flickering, as if showing some kind of emotion,

The atmosphere in the cabin also became dull,

Fortunately, this dull atmosphere did not last long, and was interrupted by Xiaoguang:

"Is it possible that our galaxy is from another river system?"

Hearing such a question,

Yang Meng shook his head and said:

"It's not very likely, after discovering that there is a situation where the river system is being swallowed up by the Milky Way,

Some of us have thought about this question.

But just from the orbital data of the solar system orbiting the Milky Way,

My galaxy, which orbits the Milky Way for a certain period, does not support such a conclusion!"

"Stellar orbit data!"

"So, that's what you're using to figure out that the Ross 128 galaxy is from another river system!"

"To be precise, there is a certain chance that it will come from other river systems......

Yang Meng corrected and continued:

"If the Ross 128 galaxy is judged based on the disk of the Milky Way,

You will find that this star is obliquely entered,

Diagonally across the disk from the top of the Milky Way disk,

According to some supercomputing simulations,

After inserting the disk, under the influence of the angular momentum of the super-large gravitational center of the Milky Way,

The Ross 128 galaxy will fall back to the disk,

So repetitively exercising,

From passing through the disk to falling back to the disk, in billions of years, it will stabilize on the disk of the Milky Way.

On the other hand,

Whether it's my solar system or your planet Rutan,

Judging by the current data,

It's been running steadily on the Milky Way disk for some time!"

"I see......

After listening to Yang Meng's explanation, Xiaoguang flickered at a strange frequency, which seemed to be regretful, and seemed to have other emotions.

And Yang Meng explained for a while,

I felt a little dry mouth, and on the way to drink water, I saw Xiaoguang's body showing such complex emotions,

I can't help but feel a little strange in my heart,

"It seems to be struggling with whether or not it's from an extragalactic galaxy......

Seeing this situation,

Yang Meng closed the water bag and wanted it

continued to say something, but when the words came to his mouth, he didn't say them in the end,

Although he has told Xiaoguang that it is not very likely that the solar system came from an extragalactic galaxy,

But this possibility is not completely out of the question.

Humanity is too small for the entire galaxy,

The Milky Way has been around for 13 billion years,

And the time for human civilization to really appear is less than a few thousand years,

In these thousands of years,

The distance that human beings have explored in the universe has not exceeded 20 light-years.

The entire Milky Way is more than 10 light-years in diameter.

At this scale,

Any speculation about the origin of the solar system is unreliable,

Unless one day human theories and technologies can break through the speed of light, then they will be qualified to explore the origin of mankind and the origin of the solar system.

"Speaking of which, the position of the solar system in the Milky Way is not so normal......

Yang Meng recalled,

Map of the position of the solar system in the Milky Way,

The solar system is in a relatively outerly region of the entire Milky Way,

And that's not all,

What's really strange is the distribution of celestial bodies around the solar system,

There are no rampaging pulsars or active black holes near the solar system.

There are not even supermassive dangerous stars,

The surrounding solar system seems to be very clean......

"Uh-huh......

For such a question just flashed through his mind,

and expelled this extremely old and unnecessary question from his mind,

Then his consciousness returned to the original question:

"Hikari once said that this planet tastes weird!"

"Xiaoguang's judgment of taste is derived from the worldview of string theory, which is even smaller than the quantum realm.

If this is the case, it does further confirm the possibility that this galaxy is from an extragalactic galaxy!"

"But what makes this galaxy different from other stars?"

Yang Meng looked at the bright red planet in the distance through the porthole,

"Could the reason for this difference be related to the composition of the base substance?"

"Could it be that the extragalactic galaxy where the Ross 128 galaxy is located is different from the Milky Way?"

Thinking of this,

Yang Meng groaned,

There is no completely accurate model of how the Milky Way was formed.

But one thing is certain,

Most of the matter in the Milky Way is formed from a certain kind of infrastructure.

This infrastructure,

It could be a supermassive, super-large nebula,

It is also possible that a supermassive active galactic nucleus black hole,

In the process of the universe's inflation, it continued to accretion of surrounding galaxies and materials, converging into today's Milky Way.

Or maybe it's a combination of galaxies in situ,

But in either case, the process of the formation of the Milky Way has a unified material basis.

And where the Canis Major dwarf river system came from is not clear to humans,

What humanity can be sure of is that this galaxy crashed into the Milky Way galaxy at a great speed.

And then it's absorbed by the Milky Way,

As for the Canis Major dwarf galaxy, it came from that direction,

It's a dwarf galaxy thrown out of other large river systems,

Or breaking into the solar system from outside the visible universe of humans, it is impossible to know.

"The anomaly in the current Ross 128 galaxy may be related to the river system in which he is located.

It's a pity that it's almost impossible to find an answer......