Chapter 494: Pursuit

A fleet is very complete. It is not just warships, but also various types of robots and various functional small spacecrafts in each warship, and of course, aircraft used for internal planetary exploration.

A sea-class warship is three kilometers long, and the Tianqin is five kilometers long. Such a huge volume can fully accommodate supporting facilities of various functions, and even production lines. It can be said that each sea-class spacecraft is a city.

As the exploration deepens, the three planetary bases left by the Chiyan civilization gradually appear in front of humans. This time is not long, after all, the number of robots invested by humans is very large.

In this process, human exploration robots received some attacks from the base defense system, and many robots were buried here, but humans did not care, because there were many robots.

After about six months of exploration, humans finally turned the bases on the three planets upside down.

Six months is already a short time. After all, the Chiyan civilization has been operating on these three planets for hundreds of years. Their traces are everywhere in almost every corner of the planet, and their various facilities are everywhere. If humans did not have a large number of exploration robots, they really could not complete the exploration in such a short time.

Unfortunately, in the subsequent exploration, apart from getting some answers about the functions of various buildings of the Chiyan civilization, humans were unable to obtain any useful information from these planetary bases.

Since there was no useful information, there was no need to stay here.

Immediately, Yue Yuan ordered the fleet to return. The First Fleet and the Second Fleet needed to replenish supplies and fuel before they could set sail, so the return destination was the thirteenth planetary base.

When leaving, Yue Yuan did not order the destruction of the three planetary bases left by the Chiyan civilization. It was not because he was merciful, but because it was unnecessary.

Destruction would waste more time.

Then the First Fleet and the Second Fleet spent a year replenishing supplies, fuel supply, and maintenance work, and then it was time to leave.

"Marshal Yue, the first fleet, the second fleet, and the third fleet are ready. The strong artificial intelligence of the four planetary bases has completed the collection of facilities and equipment in their respective areas of responsibility and can set sail at any time."

"3 minutes to set sail, target: JM18756"

After the short voice sounded, the huge fleet composed of three fleets of mankind finally officially set foot on a new route, or in other words, the route to pursue the Red Flame Civilization.

Like the Red Flame Civilization, when humans left, they did not destroy the bases they had built there, but one difference is that humans moved more cleanly. Except for some temporary buildings, such as some facilities built with reinforced concrete materials, everything else was packed away by humans.

The various facilities of mankind are designed with the concepts of modularization, foldability, and mobility. In other words, the mining bases of human civilization are essentially landing spacecrafts. After landing, they form facilities with different functions according to established procedures.

Just like the combination of "I will form the body, I will form the head, and I will form the arms", humans can easily make these large machines achieve this kind of decent deformation.

Three minutes passed quickly, and the three fleets that were reorganized into a large fleet finally set off on their journey.

More than 12.2 million magnetic thrusters were activated one after another, and the warships were set to the same position under unified command. At this moment, a wonderful physical phenomenon that can only be detected by a third-level civilization appeared at the end of the magnetic thruster, and a powerful force appeared at this moment.

There was no bright light, no charming colors, and no passion for light and heat. There was only the invisible phenomenon of the moment of monopole phase change, and the faint metallic luster reflecting the light of distant stars.

At this moment, the picture of more than 12.2 million warships of mankind setting sail at the same time did not look as shocking as that of the second-level civilization, but the style was undoubtedly higher.

It was as if nothing had happened to them, and they accelerated from a relatively static state towards the same direction of the starry sky. The advancement of science and technology has made the human fleet more and more sci-fi. Such a fleet, in terms of concealment alone, is enough to beat any second-level civilization.

In fact, humans are now completely unable to detect the Red Flame Civilization Fleet through optical means. A year and a half is enough for the main fleet of the Red Flame Civilization, which left earlier, to disappear from the sight of any low-level civilization.

But it does not mean that humans cannot find them.

Before the large fleet set sail, humans had sent out some advance warships to conduct scattered detection in the direction where the Red Flame Civilization Fleet disappeared, just like scouts sent out for marching and fighting.

The human large fleet planned its route through the detection information fed back by these warships, thereby tracking the Red Flame Civilization Fleet.

For a fleet using magnetic propulsion technology, the greater the thrust, the more obvious the track, and the longer the continuous detectable state. So far, humans have no technology that can erase these traces of phase change.

Similarly, the Red Flame Civilization cannot, or even the third-level civilization cannot.

The main fleet of the Red Flame Civilization has more than 70 million spacecraft, and the track brought by the huge fleet is very obvious. Even if more than a year has passed, humans can still easily detect it.

The pursuit in the starry sky is actually nothing special. It is nothing more than a group of exploration spacecraft exploring the track in the front, and the fleet in the rear keeping a close eye on the other fleet.

The target star is still twenty light years away. The human fleet needs to accelerate to 50% of the speed of light, and then reduce the speed to the level before departure when it arrives at the destination. This process takes forty years from the perspective of the outside world, which is a stationary observer relative to the human fleet. But for humans themselves, it only took thirty-five years to reach the destination.

This process can be said to be the time expansion of the outside observer, or the shortening of the distance traveled by humans. This is the so-called clock slowing and ruler contraction effect.

The effect occurs in the process of fleet acceleration and deceleration, not in the process of 50% of the speed of light, so the key physical quantity of the clock slowing and ruler contraction effect on humans is not speed, but acceleration.

The reason for this is that speed itself has no meaning after losing the reference system. When the fleet travels at 50% of the speed of light, you can also say that the fleet is stationary.

Because the speed of light is constant, no matter how fast you are, you are stationary for light.

In other words, A is moving away from B on the planet at 50% of the speed of light, and vice versa, it is also true that B on the planet is moving away from A at 50% of the speed of light. But why is it that after the two speeds are synchronized again, A eventually becomes younger than B? That is because the acceleration and deceleration process occurs in A.

This has been verified by humans in the Earth era, and there is no problem. But you must know that the reason for all these changes is acceleration.

It is acceleration that changes the characteristics of space-time.