Start sweeping the universe by rubbing the CPU with your hands.

If all the fuel Han Yang has left at this moment is used for deceleration, it will roughly reduce the speed of the spacecraft from 99% of the speed of light to about 20% of the speed of light, which is about 6 kilometers per second.

The fuel was already insufficient, but Han Yang still did not give up the use of the fuel, but continued to use it to adjust the course of the spacecraft, even if the spacecraft was already aimed at the Canis Major dwarf galaxy, even if no further operations were carried out. After adjustment, the spacecraft will definitely enter the Canis Major dwarf galaxy.

Moreover, this kind of orbit adjustment is not a one-time thing, but a little adjustment at a time, or even a slight adjustment every few years or more than ten years.

Under this situation, Han Yang, the last remaining spacecraft, was still approaching the galaxy.

Time passed slowly, and thousands of years passed in the blink of an eye. At this time, Han Yang noticed that long-distance communication had returned from unavailable to available. Although the communication speed and quality are still very low, just like when I was far away from the galaxy.

This means that the density of matter around you is slowly increasing. And this is obviously because it is getting closer to the Canis Major dwarf galaxy.

Of course, Han Yang knew that the current long-distance communication was only available within the Canis Major dwarf galaxy. It is still impossible to communicate with the galaxy through this. The reason is also very simple. The intergalactic space between the Canis Major Dwarf Galaxy and the Milky Way is so vast that it acts like a wall, blocking communication between the two galaxies.

At this moment, Han Yang was filled with sighs.

Thousands of years have passed. My own journey has finally reached its final stage.

Time is still passing quietly, and Han Yang still maintains the kind of operation of slightly adjusting the course every few years or more than ten years. The little fuel left continued to be slowly consumed under this situation.

There is a star in front, not far from Han Yang. According to the current heading calculation, I will eventually pass by it only 60 light-years away.

It's a huge red giant star. Already at the end of its life, it expanded extremely, and its radius even expanded to 200 million kilometers.

If it were placed at the position of the sun, it could even swallow up the earth.

Han Yang saw that around the huge star, there were two gas giant planets larger than Jupiter, rotating around it and enduring its scorching heat. Between the two large planets, there is an asteroid belt surrounding it like a belt.

Although there is no detailed observation, Han Yang can still conclude based on preliminary estimates: there are at least 100 dwarf planets larger than Ceres in the asteroid belt. It contains endless matter that can be converted into endless energy.

But unfortunately, Han Yang cannot reach that star system. Even if he managed to adjust his orbit to point to that star, he would not have enough fuel to slow down and stay there.

But it doesn't matter, Han Yang has no intention of going there.

According to Han Yang's observations, in his own direction, this star is the outermost star of the Canis Major dwarf galaxy.

Like the edge of the Milky Way, stars are sparse here. But an unquestionable reality is that no matter how marginal it is, at least he has truly reached the Canis Major dwarf galaxy at this moment and has truly entered the interior of this dwarf galaxy.

The long voyage of more than 20,000 years is coming to an end.

Crossing the star without hesitation, Han Yang continued to move forward.

The number of stars that can be seen in the sky has increased again. Even with a telescope equivalent to the level of the naked eye, Han Yang could see about a thousand stars in the night sky.

They are dotted in the starry sky like gems. The dark and empty starry sky was finally no longer lonely at this moment, and finally had a little more color.

Han Yang mobilized all his observation equipment and began to truly observe this extragalactic galaxy closest to the Milky Way.

The Canis Major dwarf galaxy is only about 5000 light-years in diameter, only one-20th the size of the Milky Way.

The number of stars in it is only about 10 billion, which is about 300/ of that of the Milky Way. Moreover, most of the stars that make up this galaxy are red giants.

Red giant stars are old stars. The reason why this galaxy is dominated by old stars is because the rate of new star birth inside this galaxy is very low.

Because the birth of stars depends on interstellar molecular clouds, the collapse of interstellar dust clouds and the accumulation of large amounts of material can gather enough mass to light up stars.

Because of the huge mass of the Milky Way, a large amount of interstellar dust clouds inside the Canis Major dwarf galaxy are plundered by the Milky Way and continue to flow to the Milky Way.

This even forms a "star stream" connecting the two major galaxies.

It is like a river, constantly starting from the Canis Major dwarf galaxy, spanning a distance of tens of thousands of light-years, taking tens of millions of years, and flowing continuously towards the Milky Way.

In fact, when Han Yang set out for the Canis Major dwarf galaxy at this moment, he came up against this river of stardust.

Of course, the so-called "stardust river" is just a figurative way of saying it. In fact, the material density of this star stream is also very low, even comparable to the ultra-pure vacuum created by Han Yang in the laboratory, and cannot even support the material density required for long-distance communication.

It is only because this river is so wide and lasts long enough that it can accumulate enough material from the Canis Major dwarf galaxy to the Milky Way.

After several billions of years, tens of billions of years later, the interstellar dust clouds in the Canis Major dwarf galaxy will become fewer and fewer, new stars will be born less and less, and the original stars will continue to age, and eventually It turned into what it is now.

In fact, there are more than just Canis Major dwarf galaxies. There are dozens of satellite galaxies like the Canis Major dwarf galaxy surrounding the Milky Way, and at least half of them are constantly being robbed of mass by the Milky Way.

There are dozens of such star streams around the Milky Way.

What's more, Han Yang believes that billions or even billions of years ago, there were more satellite galaxies around the Milky Way than there are now.

Why is there less now?
While in the Milky Way, studies of some special clusters of stars reveal the answer.

Han Yang knew that some special star clusters within the Milky Way were not actually formed in the Milky Way. They were formed outside the Milky Way, and they were originally an independent and complete extragalactic galaxy.

Just because of the huge gravitational force of the Milky Way, the river system they formed was directly swallowed whole by the Milky Way and became part of the Milky Way. Therefore, they will show various differences within the Milky Way, such as special orbits and speeds, special orbiting directions, special metallicity, etc.

This is a gravitational battle at the river system level. In this space, the Milky Way is the undoubted leader and the undoubted king.

Han Yang's spacecraft is still moving forward at 99% of the speed of light. After slowly sailing for hundreds of years, the density of stars finally increased, and the number of stars visible to the naked eye gradually increased, reaching about 2000 visible to the naked eye.

Moreover, the distribution of stars has also changed from being only concentrated in one area of ​​the sky to occupying the entire celestial sphere.

Remarkably, at this distance, the Milky Way is also clearly visible. It's just that it is no longer like a river as seen on the earth, but has turned into a pouring roulette-like shape.

It is very eye-catching and takes up a large area of ​​the sky. In addition, there is a much smaller and dimmer one next to it, but it is also disk-shaped.

That's the Andromeda Galaxy.

There are also galaxies that are fainter and smaller, but just as visible to the naked eye.

That's the Triangulum Galaxy.

The sky is dotted with stars, galaxies, stars, river systems, stardust... all kinds of existence make the sky finally colorful.

Looking at this magnificent sky in the distance, Han Yang was filled with emotion.

The plan takes the next step.

At this moment, the spacecraft's speed is still maintained at about 99% of the speed of light. At this moment, all the available fuel Han Yang has left is only enough to reduce the speed of the spacecraft to about 45% of the speed of light, which is about 13.5 kilometers per second.

This speed is still too high. If he maintained this speed, he would pass directly through the Canis Major Dwarf Galaxy and set foot on the vast starry sky again, until the last bit of energy was exhausted and his brain died completely.

Moreover, at such a high speed, Han Yang had no way to obtain quality from the outside world.

There must be other ways.

The situation seemed to be in dire straits at this moment, but Han Yang was not panicked at all. He had already planned everything.

Previously, it was part of this plan to rather waste energy that was already insufficient to correct the course of the spacecraft.

The small spacecraft was still moving forward rapidly, and Han Yang began to use the remaining fuel for deceleration. And, while slowing down, it adjusted its course and flew towards a certain direction of the Canis Major dwarf galaxy.

As early as thousands of years ago, when Han Yang was thousands of light years away from the Canis Major dwarf galaxy, Han Yang had already discovered that there was a very special celestial body in this place.

It's pitch black here and no stars can be seen. But around it, many stars are rotating around it. Moreover, Han Yang could even see two identical stars around it.

Completely, completely identical. Those two stars not only have the same mass, volume, metallicity, and temperature, but also have exactly the same color and stellar activity.

Is it possible for two identical stars to be born in the universe? Han Yang believes that the probability is there, but it is too low, so low that it has no practical significance at all.

In other words, it is basically considered impossible for two identical stars to exist in the universe.

So why does it appear here?

The reason is very simple. It is not that two identical stars really appear, but that the same star appears as two "images" due to gravitational lensing.

Why does gravitational lensing occur? Obviously, there is some massive celestial body between himself and the star.

Invisible massive celestial bodies, surrounding stars rotating around them, gravitational lenses...

Through these extremely obvious phenomena, Han Yang immediately determined that there was a black hole hidden there.

A black hole with a mass of 1.6 times the mass of the sun, but a radius of only about 4.7 kilometers.

At this moment, Han Yang rushed straight towards the black hole.

As the distance got closer, more details about the black hole entered Han Yang's detector.

Han Yang discovered that this was a black hole that could be regarded as dormant.

The so-called dormant period is a period when there is not much matter around the black hole, the rate of swallowing matter is slow, and the external radiation is low. However, according to Han Yang's observation, there is a star that is relatively close to it. Based on its current orbit, it will be close enough to it in about 100 million years.

At that time, the star will be completely torn into pieces. In perhaps millions of years, all the mass that makes up the star will be bitten and swallowed up by the black hole, and the entire black hole will be completely destroyed. Activate and become an extremely bright star.

But that will happen 100 million years later and has nothing to do with Han Yang at this moment. At least at this moment, what falls into this black hole is only some thin interstellar gas. The friction between them is weak and cannot radiate much energy outwards. The environment is not too bad. Even if Han Yang gets close, it will not be affected much. .

At this moment, the speed of the spacecraft has dropped to about 14.6 kilometers per second. He still had a small amount of fuel left but did not slow down any further.

This part of the fuel will be used for some subsequent plans that are extremely critical and can directly determine Han Yang's fate.

During the precise orbit adjustment, Han Yang rushed to the orbit about 5 kilometers next to the black hole at an acute angle and relied on inertia.

Then, the Han Yang spacecraft, which no longer had enough fuel to slow down, was forcibly restrained by the gravity of the massive black hole.

The spacecraft could no longer fly forward. Instead, it was bound by the black hole's gravitational field and began to revolve around it at a speed of 14.6 kilometers per second. Every approximately 4 seconds, the spacecraft would revolve around the black hole. lock up.

But that's just outside time. Because of its extremely high speed at this moment and the huge gravitational field of this black hole, the relationship between space and time has been changed.

From Han Yang's perspective, it only took him less than a microsecond to circle the black hole at this moment.

Han Yang immediately began to operate relevant equipment to check and confirm the trajectory at this moment. After confirming several times in a row, Han Yang finally breathed a sigh of relief.

He knew that he was finally truly staying in the Canis Major dwarf galaxy at this moment, and no longer had to worry about passing directly through this galaxy.

The gravitational pull of the black hole is like a huge, elastic net that pulls the "arrow" from the string to a stop.

The situation is temporarily stable. At this moment, Han Yang finally had some thoughts and went to take a look at the surrounding environment.

What appeared in front of Han Yang at this moment was a magnificent and wonderful scene that was indescribable. (End of chapter)