(Not modified, please ...... later) ）

Once remembered, a planet could come from an extragalactic galaxy,

Whether it is Xiaoguang or Yang Meng,

My heart is shaken,

But after all, the river system is not a solid planet.

The meeting of two rivers may be like two balls of flour kneaded together,

You've got me, I've got you,

In the time scale of 100 billion years,

Who can be 100% sure that the planet they are on is the son of the galaxy, and not from other river systems.

Yang Meng didn't know, and Xiaoguang knew it too.

This person, a point of light, just stood at the porthole, looking through the porthole at the brighter Ross 128 galaxy in front of him, "I don't know what kind of structure there is in this weird galaxy!" ”

"It should be similar to normal information!"

"When this galaxy falls into the Milky Way, won't the planet it belongs to be thrown out?"

Hearing such a question, Yang Meng was silent for a moment, shook his head and said:

"Not really!"

As early as about 2000, mankind discovered a gas giant in this galaxy.

On November 15, 2017, in the habitable zone of the Ross 128 system,

A terrestrial planet was discovered,

With the development of astronomical technology,

and the process of the previous pioneer astronaut approaching the Ross 128 system,

Seven different types of planets have been discovered in this galaxy.

Recalling the planetary data of the Ross 128 system,

Yang Meng found that

This galaxy is in the process of falling into the Milky Way,

Not only did not throw out many celestial bodies,

On the contrary, because of the vacuum cleaner effect of a single-star system,

Along the way, it attracted a lot of celestial bodies and cosmic dust matter,

This is also a possible reason for the formation of its outer detrital belt and dark nebula belt.

But it's a pity that the mass of the Ross 128 galaxy is too small,

When this galaxy is stable in the Milky Way,

The surrounding dark nebulae dissipate much faster than Saturn's rings.

Yang Meng thought for a while and told Xiaoguang what he thought.

"It turns out that it won't be thrown out"

Hearing Yang Meng's answer, Xiaoguang flickered slightly,

After all, it is the existence of Yang Meng from a different civilization,

The focus on the Ross 128 galaxy is different from that of a human being.

"Our planet, in such a planet may ......"

Seeing what Xiaoguang was dripping there,

Yang Meng didn't say much, in fact, he understood Xiaoguang's meaning very well,

Those who have been trapped in that galaxy for 1.5 billion years may have another way out if they can wander more with their own star system.

"Little Light's idea may be good,

But living in such a galaxy with constant invasion of alien objects can be a dangerous thing! ”

Thinking of this, Yang Meng frowned slightly,

A bad thought suddenly appeared in my heart,

He seemed to think of the dangers that the previous pioneer astronauts would encounter after entering this galaxy,

……

Time passes slowly,

Yang Meng's spacecraft continued deep into the Ross 128 galaxy,

The spacecraft has also been in a state of deceleration and braking.

In this case,

The advance probe, which basically did not slow down much, had already reached the Ross 128 galaxy one step ahead of him.

As the probe passes over the celestial bodies in the galaxy,

A large amount of data was also transmitted back to the Boundless East through the probe.

And looking at the data transmitted back by the detector,

Yang Meng's expression also became serious.

Xiaoguang on the side, seeing that Yang Meng's expression had changed, floated over and asked:

"What's wrong?"

I saw Yang Meng respond after being silent for a few seconds,

"This galaxy seems to be in a period of heavy bombardment!"

"Heavy bombardment period?"

Yang Meng nodded, he also knew that the civilization where Xiaoguang was located was not the astronomical period that was prevalent with the star system.

And the red dwarf star where Rutan's star is located,

and more than 10 billion years old star systems,

I'm afraid the heavy bombardment period of the Rutan galaxy has long since ended,

If the Rutan civilization is unable to leave its own galaxy, it will not find itself in its own galaxy from such a cycle,

Therefore, when Xiaoguang's question about this issue,

Yang Meng didn't show any surprise,

It's just that he's thinking about how to explain this problem to Xiaoguang,

Since the breakthrough of human particle physics,

Radioisotope determination adopted by humans in 1953,

The age of the Earth was determined to be 4.55 billion years old.

The earth has such an age,

And the oldest fossilized bones of human beings were only found in strata 5 to 600 million years ago.

It was as if life on Earth had suddenly erupted in that Cambrian era,

And in five to six years' time,

Compared to the age of the earth's 4.5 billion years, it is only a fraction of the age.

So there was speculation,

In the 4 billion years of history of the Earth, there was a civilization that existed,

But 20 years after the age of the Earth was determined,

Human probes are beginning to reach the Moon, Venus, Mars, and even farther Jupiter, Saturn,

Some of the phenomena found on various planets,

to a certain extent overturns this speculation,

Although it is not yet possible to reach the level of complete overthrow,

But it is basically certain that the period between 4.5 billion and 3 billion years of the formation of the earth,

The Earth is in the midst of a period of heavy bombardment of the solar system,

At this stage, the chances of life on Earth are not high.

The so-called period of heavy bombing, the beginning of its discovery,

It was when the human probe left the earth and arrived on the moon that it was discovered.

There are a lot of craters on the moon,

Most of these craters have been determined to be more than 3 billion years old.

At first, humans thought it was a phenomenon unique to the moon.

With the human probe reaching Venus,

Humans discovered that Venus also suffered an impact 3 billion years ago.

And the same phenomenon was found on Mars.

And then the human probe went farther away,

Reached Jupiter,

Because Jupiter is a gas giant,

Can't find the crater,

Most of the satellites around him are ice satellites, and the evidence of the heavy bombing period is not obvious,

But when the human probe reached Uranus, it saw a terrifying scene,

The whole of Uranus has been lying flat in its orbit,

The position of the north and south poles and the position of the equator have been replaced,

Why does Uranus have such a posture,

All astrophysicists can think of is that the giant planet has suffered some kind of tragic impact.

It's like there's an unknown celestial body,

crashed into the earth,

The position of the North Pole was struck crookedly to a position close to the equator,

But what kind of celestial body,

can crash Uranus, which is more than ten times more massive than the Earth, like this,

With a little thought, you can deduce the physique of the striking celestial body,

As for the whereabouts of the perpetrators, humanity has no way of knowing.

But one thing is still certain for mankind,

Through Uranus's faint, barely visible rings,

Human analysis shows that this situation is likely to have occurred three billion years ago.

This also shows the level of danger in the solar system during the heavy bombardment period.

Even though the period of heavy bombardment of terror is over,

Geologists on Earth,

Still on Earth for 30 to 1 billion years,

Found a crater,

Some of these craters are even larger than the meteorites that were estimated to have wiped out the dinosaurs.

Until now,

The earth's environment in which humans live is still at risk from some asteroids.

This is the solar system for 4.6 billion years.

The internal structure of itself is not constantly cleaned and stabilized.

"The condition of the Koros-128 system......

Earth doesn't seem to have expected such a situation in this galaxy! ”

Yang Meng looked at the data transmitted by the detector,

And recall the situation during the heavy bombing,

After explaining a little bit to Xiaoguang during the heavy bombing period,

He pondered the whereabouts of his friend.

After listening to Yang Meng's explanation, the little light on the side flickered for a moment, and after digesting this astronomical knowledge that it had never been exposed to,

"Wouldn't it be a dangerous place if this galaxy was in what you called a heavy bombardment period!"

"Yes!"

Yang Meng nodded, looked at the bright red planet in front of him, and said in his heart:

"What would she choose?"

When the pioneer astronauts left the earth, they carried a variety of equipment and technology, so that the pioneer astronauts could survive in a very extreme environment.

Whether it is the original exploration of gas giants, "in name but not in real place!" ”

Or in the environment of acid rain of more than 400 degrees on Venus, survival experiments,

In the 100 years since the breakthrough of controlled nuclear fusion technology,

Planets of different shapes in the solar system,

It provides a variety of valuable experience for human space landing technology.

Let the pioneer astronauts have a strong survivability,

This is one of the reasons why the Earth has the confidence to send pioneer astronauts to other galaxies.

But even if astronauts have the ability to survive in extreme environments,

But there are some disasters that today's astronauts can't deal with anyway.

In the midst of these disasters,

This includes being hit by a meteorite when landing on a planet......

"According to the itinerary specifications at the time of departure, if there is an interstellar disaster that cannot be resisted, the astronauts have the right to choose to change the target or return directly!

It is not recommended on the earth side that pioneer astronauts go directly into a galaxy in the face of danger!

So what will she choose? ”

He is also a pioneer astronaut, and he put himself in the shoes of that friend.

"What would I do if I were faced with such a situation?"

Yang Meng looked at the galaxy in front of him and fell silent,

There seemed to be a figure in front of him

……

"It took me hundreds of years to get here, did I just give up?

You should go in and have a look anyway,

If you have the chance......"

"But the chances of life in such a galaxy are not very high.

nor can it be the preferred migration galaxy on Earth's side,

My quest may have been in vain......

"It's only to blame those astronomical research experts on the earth that they didn't determine the condition of this galaxy, so this mission is very likely to fail, but if you think about it carefully, who would know that the ancient red dwarf galaxy could also exist like this!"

……

Thinking back to that friend,

Thinking of what that friend might have said,

If he faced such a situation, he might also be depressed for a while.

But as pioneer astronauts,

As early as the moment of departure, all kinds of preparations have been made in my heart,

The complex and changeable situation in the universe,

Human astronomical observation technology is very limited.

Especially in the face of this kind of dark and small red dwarf star,

Many observation techniques are not effective in observing the situation in red dwarf galaxies.

It was only discovered when pioneer astronauts approached the red dwarf galaxy.

"In fact, the Earth side should not have expected this to happen in the Ross 128 galaxy!"

Yang Meng muttered secretly,

The age of the Ross 128 galaxy is more than 9.4 billion years old,

Although it is a little younger than the Rutan system,

But for more than 9 billion years,

It's enough for him to clean up the surrounding substance,

The galaxy will be extremely clean,

Meteorite impacts are rare,

But who would have thought that this galaxy fell into the Milky Way from other extragalactic galaxies,

In the process of the merging of extragalactic galaxies with the Milky Way,

It's a lucky thing that we didn't collide with other galaxies.

It's just that there are some meteorite chaos that is already a blessing in misfortune.

"If you think about it this way, that pioneer astronaut is very likely to have penetrated deep into this Ross 128 system!"

"Could it be that she had some accident in the process of going deeper?"

Yang Meng secretly thought about something,

Xiaoguang on the side, seeing Yang Meng's expression change, flickered and asked:

"It seems that you didn't expect this either!"

"But didn't you already deduce that this galaxy came from another river system, why didn't you expect this?"

Hearing Xiaoguang's words, Yang Meng shook his head lightly and said:

"That's just speculation! In fact, we have to get closer to this galaxy to see it specifically! ”

This time Yang Meng didn't explain too much,

There are meteorites inside this galaxy,

made it dozens of times more difficult for him to enter it,

Now he's thinking about what to do next:

"The speed of the ship is still too fast,

Entering the Ross 128 planet area at this speed is a very dangerous thing! ”

Yang Meng glanced at the current speed of the spaceship and shook his head silently,

If the Ross 128 galaxy is as clean as the Rutan galaxy,

There is nothing wrong with entering the Ross 128 galaxy at his current speed,

But now he had to change his strategy.

"Why don't you use the landing return capsule that is easy to brake and slow down to get close to Ross 128b like you did when you enter the three-star system close to Nanhe?"

Thinking of this,

Yang Meng and Xiao Yin discussed the feasibility of this plan,

As Xiao Yin, who is an artificial intelligence, a major role is to assist Yang Meng, who actually simulated the calculation of the orbit.

And when Yang Meng handed over the current detected data of the Ross 128 galaxy to Xiaoguang, and after its analysis and calculation,

The simulation results obtained are not optimistic.

"This plan doesn't work......"

"The Ross 128 galaxy is too small!"

"Most of the matter is crammed into a small area!"

Looking at the data map simulated by Xiao Yin, Yang Meng sighed helplessly,

An astronomical unit, which represents the average distance from the sun to the earth,

And if the extent of the solar system is measured by the extent of the planets, then the solar system has a radius of thirty astronomical units.

The mass of the Koros-128 galaxy is only 0.16 times that of the Sun.

The range of its planetary orbit is only 2.1 astronomical units,

And most of the matter in a galaxy is concentrated in the orbit of the planet, which makes it very troublesome.