Chapter 447 Just Go Forward Boldly!

After several decades, the fleet carrying Han Yang's brain tissue landed at the edge of this star system.

Han Yang did not enter this star system, nor did he need to. Because under his control, the fleet used to launch intergalactic voyages had already arrived at the edge of the star system in advance.

Han Yang prepared 10 large aerospace motherships here, as well as tens of thousands of supporting materials, equipment, and special spacecraft.

At this moment, the two fleets finally merged. Under heavy protection, Han Yang's brain tissue was also transferred to the most core spacecraft in this fleet.

This is a comprehensive spacecraft, which has some combat power and good defense, as well as some engineering capabilities. Its own size is also large enough to accommodate a large number of industrial equipment.

The number and types of these industrial equipment are even so many and complete that a complete industrial system can be built.

Although it is not so perfect, lacking some high-precision special equipment, only some universal, most important and basic equipment, and the scale is not large enough, it is enough in Han Yang's view.

Moreover, this is only the equipment loaded in this spacecraft. There are more industrial machines on the remaining transport ships and aerospace motherships.

After ensuring that all preparations have been completed and all spacecraft and supplies have been transferred to the aerospace motherships, this fleet set off as scheduled.

A total of ten large aerospace motherships simultaneously entered the superluminal navigation state, and began to move towards the vast starry sky at a speed of 80 times the speed of light, and continued to sail uninterruptedly for 30 years.

The distant distance of 2400 light years was crossed by Han Yang.

The original star system was already at the edge of the Milky Way. The stars there are extremely sparse. At this moment, after being away from 2400 light years again, the shadow of the stars can no longer be seen outside.

From the absolute distance from the Milky Way, at this moment, there are also some stars in other directions of the Milky Way.

Those stars or hypervelocity stars, that is, they were thrown out in the internal gravitational battle, with a speed of nearly 1,000 kilometers per second, enough to break free from the gravity of the Milky Way, and then headed away from the Milky Way, running all the way with the planets around them, and never returned to the Milky Way.

Or some stars with lower speeds, but in the long gravitational changes, gradually moved to the edge of the Milky Way and obtained a stable orbit, like the "satellite" of the Milky Way, and began to orbit the Milky Way.

There are even some stars that are approaching the Milky Way at a very high speed.

Han Yang has reason to believe that those stars are not actually native stars of the Milky Way. They may have been born from other galaxies, and were eventually thrown out after similar internal gravitational battles, or simply affected by the gravity of the Milky Way, and were directly "plundered" from other galaxies, forming this strange orbit at the moment.

But these stars at the edge of the Milky Way, or outside, have one thing in common, that is, they are extremely rare.

The average distance between two such stars can even be as high as more than a thousand light years.

Compared with the sun at that time, there were as many as 15 stars within a distance of only ten light years. At this moment, the density of stars is so sparse that it seems that there are no stars.

The distribution of stars in the Milky Way is just like the atmosphere of the earth at that time. There is no obvious boundary with the outside world, but it gradually becomes sparse.

At this moment, the star density has dropped to this level. No matter from which aspect, it can be considered to have left the Milky Way.

At this distance, Han Yang's fleet has left the state of superluminal navigation.

The superluminal voyage of 2,400 light years is Han Yang's limit at this moment. The next voyage can no longer use superluminal navigation.

Because when setting off, Han Yang had consumed most of the billions of tons of supplies and fuel he carried. And the star density here is too low and too far away, so Han Yang can no longer obtain supplies.

But there is good news at this moment. The good news is that about 500 light years away from the current position, not far from Han Yang's navigation orbit, there happens to be a lonely star that is running away from the Milky Way at a speed of about 1,200 kilometers per second.

According to observations, there are three massive planets in that star system with sufficient matter.

If he can go there, Han Yang will be able to obtain enough supplies and once again cross a distance of more than 2,400 light years through superluminal navigation, thus saving more than 2,000 years for the total voyage.

But there is also bad news. The bad news is that Han Yang cannot go to that star system to obtain supplies.

The reason is also because the location of that star system is too suitable, so suitable that it is like a frontier supply base specially built for long-distance voyages in the Canis Major dwarf galaxy.

Such a suitable star system, you can tell with your butt that there must be a surveillance force of the creator civilization. Dare to go to that star system is to seek death.

As a result, Han Yang had to give up the idea of ​​getting some supplies and honestly follow the original plan, abandoning superluminal navigation at this distance node and switching to conventional navigation.

Thus, the conventional acceleration phase began.

The long-dormant conventional thruster without propellant began to emit bright light, pushing the heavy aerospace carrier to slowly accelerate.

This acceleration took more than two years, and the speed of the entire fleet was finally increased to 99% of the speed of light.

Han Yang did not plan to continue to increase the speed. If it were to increase it further, the resources consumed would not be proportional to the final harvest, and it would lose economic efficiency.

For such a long voyage, economic efficiency is the most important indicator. Han Yang must make the most stringent balance between time and resources to finally complete this voyage.

Otherwise, even if Han Yang only brought a brain on this voyage, the materials consumed were many times less than those required by normal intelligent life, and there would be no hope of completing it.

At this moment, at a speed so close to the speed of light, time is passing at an extremely strange speed.

Han Yang noticed that for every year that passed in the outside world, that is, he sailed about one light year away, he only felt that about 51 days had passed.

This seems to have such a consequence: he felt that only 51 days had passed, but he sailed a distance of one light year, and it seemed that he had exceeded the speed of light in a regular voyage.

But the actual situation is obviously not the case.

The closer the speed is to the speed of light, the slower the passage of time will be, and at the same time, the distance between the two places will be shortened. Therefore, I did not actually travel a distance of one light year, but only a distance of about 51 light days.

The reason why the distance I perceive is different from the distance outside is because the change in my own speed leads to the change in distance. Or it can be said that 51 light days of myself at 99% of the speed of light is approximately equal to one light year of myself at rest.

The change of space and time is so wonderful.

After entering the regular navigation stage, Han Yang also verified a conjecture in the dark force theory of the fifth-level civilization.

The dark force theory shows that the basic principle of ultra-long-distance communication is based on the interaction between dark matter and visible matter, or in other words, based on the interaction between space and matter.

Ultra-long-distance communication is not available if there is only visible matter but no dark matter. And ultra-long-distance communication is also not available if there is only dark matter but no visible matter.

At this moment, at this place thousands of light years away from the Milky Way, the visible matter has become thin to a certain extent. There is not even much interstellar dust.

There are only some interstellar high-energy radiation in space - most of which comes from the Milky Way, and particles such as microwave background radiation.

In contrast, the amount of dark matter is extremely large.

There is a huge dark matter halo around the Milky Way, and its farthest point even extends to 100,000 light years away, which is larger than the volume of the Milky Way itself.

At this moment, it is obvious that we are in this dark matter halo, so there is no shortage of dark matter.

In the previous galaxy, Han Yang deliberately left some receivers for long-distance communication. At this moment, Han Yang started communicating with it.

Under Han Yang's control, some detectors began to send back the detected scenes.

Long-distance communication is still available.

But Han Yang obviously noticed that the quality and speed of long-distance communication at this moment have been significantly reduced compared to when they were in the Milky Way. Moreover, after sailing for several more years, the reduction in quality and speed is more obvious.

At this point, Han Yang estimated that after about 5,000 light years from the edge of the Milky Way, long-distance communication may not be available.

At least the level of technology of the fifth-level civilization is no longer available. As for the level of the sixth-level civilization, there may be other technologies that make long-distance communication available, but that is beyond my knowledge.

Time passed slowly, and in the blink of an eye, thousands of years had passed.

Of course, this is external time. For Han Yang, the time he perceived was only about 140 years.

The distance he perceived was only about 140 light years, but he also knew that for the outside world, he had sailed 1,000 light years.

During this long voyage, Han Yang truly felt the impact of interstellar high-energy radiation on the fleet, which he had never cared about in the past.

One of the more important materials Han Yang carried on this voyage was a special anti-radiation film.

This anti-radiation film will be laid in front of each spacecraft, covering any exposed hull.

Generally speaking, there will be no matter in the interstellar vacuum that reacts with it, and no matter how long it exists, it should be intact. But the reality is that after a thousand years of sailing, the properties of this anti-radiation film have changed dramatically.

They are no longer tough, but become like old clothes, which can be torn with a slight pull. They are no longer smooth and transparent, but gradually lose their flatness, and the surface begins to be filled with things like bubbles.

They originally did not contain any metal elements, but trace amounts of metal can be detected inside them, and slight radioactivity can also be detected.

The interstellar high-energy radiation particles have changed their properties from microscopic to macroscopic in the long-term collision with the particles that constitute them. Even some particles have been hit by foreign particles, and some protons or neutrons have been added to the nucleus, and they have changed from one element to another.

Han Yang knew that if his spaceship was not covered with this anti-radiation film, then it would no longer be these protective films that would change their properties, but the armor of his spaceship.

Han Yang removed the damaged protective films and threw them into the fuel room to burn them. He took out the original reserve protective films and pasted them on the outer shell of the spacecraft again.

Today, the total mass of Han Yang's fleet has been reduced a lot. Even the original reserve energy has been burned, and what is burning now are the parts that make up the spacecraft.

When energy is sufficient, the many spacecrafts carried by Han Yang are vehicles. When energy is insufficient, those spacecrafts are dry food during the journey. Just like in the ancient earth era, some grassland nomads would carry a large number of cattle and sheep when they went on an expedition.

Generally speaking, Han Yang, who is in an inertial navigation state at this moment, does not consume much energy. But the fact is that due to the continuous impact of interstellar dust and interstellar radiation, the direction of the fleet's navigation will continue to deviate slightly and continue to accumulate.

Whenever the deviation accumulates to a certain stage, Han Yang must start the thruster once to correct the deviation. Otherwise, the fleet will not be able to always aim at the direction of the Canis Major dwarf galaxy, and will inevitably pass by it, or even go off the topic.

This correction is not much in an absolute sense. But when the journey is so long, even tens of thousands of light years, it must not be ignored.

And this is also the main consumption in the conventional intergalactic navigation.

Time is still slowly passing, and in the blink of an eye, another thousand years have passed, and then, another thousand years have passed.

At this moment, the density of matter around the fleet is much thinner than before. This has caused the efficiency of long-distance communication to be greatly reduced again. The communication efficiency between the previous star system is so low that it takes an hour to transmit 1KB of information.

Han Yang knows that the time when long-distance communication is completely unavailable is not far away.

At that time, even the long-distance communication within his fleet will be unavailable. At that time, he can only use conventional electromagnetic wave communication.

Because the overall mass of his fleet is too low to support the strength of the interaction force required for long-distance communication.

At this moment, Han Yang is about 5,300 light years away from the edge of the Milky Way defined by himself.

The space oscillation monitoring network between the Milky Way and the Canis Major dwarf galaxy, which was discovered by the Greenoka civilization and shaped by the Creator civilization, is still about 4,700 light years away.

At this distance, Han Yang made the last communication with the Greenoka fleet.

"My friend, the next thing depends on you."

Two hours later, Han Yang received a complete reply.

"Just go forward boldly and bravely. We will take care of everything else." (End of this chapter)