The current human civilization is miserable and miserable compared to the time when it only had a few spaceships and was not built by itself. It is naturally very different when it escaped the Iron Blood Nebula and came to the H1 galaxy.
In addition to the scale, the other most obvious point is reflected in the sailing speed.
Even if the fleet is so large and bloated, thanks to super engines and thrusters that are almost at the pinnacle of level three civilization, as well as more advanced and reasonable spacecraft layout and overall structure, the fleet's acceleration can still reach 0.2 meters per square second. , almost a dozen times higher than before.
"The Great Luo of All Worlds"
The maximum economic navigation speed has also reached an unprecedented 60,000 kilometers per second, which is as high as 20% of the speed of light.
——This does not mean that higher speeds cannot be achieved. In fact, if you continue to accelerate after reaching this speed, the speed can still increase. But in that case, the highest economy cannot be achieved.
You don't have to worry about economy for short-distance voyages, but in ultra-long-distance voyages like interstellar voyages, you must pay attention to economy. Because the difference in each indicator may be only one ten thousandth, it means that hundreds of thousands of tons of materials may be wasted.
There are many indicators that determine the highest economic efficiency, and the calculation is extremely complicated. Engine power, efficiency, technology level, etc., all determine the specific numbers to some extent. But Zhao Changxing can guarantee that in the third-level civilization stage, a civilization that can reach the maximum economic speed of interstellar voyages to 20% of the speed of light cannot be said to be unique to mankind, but it will definitely not be more.
This is another significant sign that human civilization has entered the pinnacle of third-level civilization, in addition to weapons such as "nano clouds".
At this moment, the huge migrating fleet has ended the hustle and bustle in the early stages of the voyage, all preparations have been completed, and a large number of personnel related to the initial preparations have also entered hibernation, so the fleet gradually fell into silence.
At this moment, only about 5 billion people are awake, responsible for maintaining the normal operation of such a huge fleet.
Zhao Changxing remained sober as always, once again treating this voyage as a valuable opportunity to improve himself and absorb more knowledge.
Time passed quietly. At this moment, outside the window, in the vast starry sky that was clearly presented in front of Zhao Changxing through projection, the originally vibrant star had degenerated into a bright spot.
A journey has ended and a new one is about to begin. In front of Zhao Changxing, in front of human civilization, there is still a long journey of 7.2 light years, a long time of up to a hundred years.
One day, a new daily document was placed in front of Zhao Changxing again.
"In the past day, there were a total of more than 6,300 A-level or above malfunctions among more than five million spacecraft. During the disposal process, a total of more than 300 people were sacrificed and more than 1,000 people were injured?"
Zhao Changxing nodded slowly, not only was there no sadness in his heart, but he felt a little relieved.
Compared with the past period, this number is relatively small.
It should be that the safety training work carried out previously has paid off. Zhao Changxing thought this in his heart.
So he gave instructions on this document.
"Safety training must continue, and every fault-handling personnel must pass an assessment before taking up their posts. Every engineering staff member is a valuable asset of civilization, and no meaningless sacrifices are allowed."
After casually handling today's daily work, Zhao Changxing once again began his never-ending study.
I don't know when, a piercing siren suddenly sounded in Zhao Changxing's ears, waking him up suddenly.
Zhao Changxing's expression immediately became serious.
Being able to directly issue a warning to Zhao Changxing without prior reporting, no matter what state Zhao Changxing is in, no matter what time it is, is undoubtedly the highest level of alarm.
Something big must have happened.
Zhao Changxing suddenly stood up and came to the conference room. Several senior government officials who were responsible for their respective aspects also hurried in at this time.
"Leader, latest discovery."
A senior government official responsible for civilized security issues hurriedly reported: "Just half an hour ago, the remote observation team responsible for route safety and star field observation discovered an unusual luminous object at the following coordinates. Further observations showed that the luminous object Relative to our sailing speed, it is as high as 79% of the speed of light! Moreover, their course is almost heading straight towards us!”
Zhao Changxing frowned immediately, took the document and looked at it carefully.
At this time, another piece of new information entered the security officer's portable computer. He took a look and immediately reported again: "Leader, the latest observation shows that the luminous object is not actually a single one, but a collection of many light sources."
In the projection, light points gathered together one after another, densely packed and countless. With just one glance, you can see at least hundreds of thousands of them, not counting the mutual occlusion between those light spots.
"This is like a spaceship..."
At least hundreds of thousands of spaceships! Compared to the human fleet, the speed is as high as 79% of the speed of light!
At this moment, the speed of the human fleet is 20% of the speed of light. The two fleets were heading towards each other. Subtracting the speed of the human fleet, it seemed that the speed of that fleet was only 59% of the speed of light, which is about 177,000 kilometers per second.
But the speed of both sides is too high at this moment. Under the relativistic speed, the superposition calculation of speed cannot be carried out through simple addition and subtraction. After incorporating the relativity formula into the calculation, Zhao Changxing calculated very simply in his mind that the true speed of the opponent's fleet relative to the cosmic microwave background radiation was actually about 70% of the speed of light.
However, even the human civilization fleet, which is already at the pinnacle of the third-level civilization, can only reach the maximum economic speed of 20% of the speed of light. At this moment, the sailing speed of this fleet is as high as 70% of the speed of light?
what does that mean?
That must be a fleet of level four civilization!
A level four civilization that has fully mastered the "vacuum model" and has mature medium-free propulsion technology that can be applied on a large scale!
At this moment, all observational data clearly point to this conclusion.
"They are heading towards us..."
The security officer's tone was bitter.
In the vast space and vast universe, is it possible for the routes of two fleets to coincide with each other?
Well, it is indeed possible. But this probability is too low, right? How could it happen to be encountered by a human fleet?
So, if not a coincidence, what is it?
There is only one possibility. That is, that fleet is aimed at humans.
"At this moment, the distance between us is still about one light-month. In about a month, our two fleets will meet..."
Zhao Changxing's brows furrowed deeper and deeper. After a long time, it slowly relaxed.
"Don't be nervous. This should be just a coincidence. They should not be coming towards us. Otherwise, they should slow down."
The security officer still looked bad.
"Leader, no matter what, I suggest that we enter a state of full alert, wake up all soldiers, and put the Space Force fleet on full alert. At the same time, adjust the course and try to avoid them."
"This is what it should be."
Zhao Changxing nodded.
Zhao Changxing is actually not sure about his judgment that "this is just a coincidence." He was just trying to reassure people.
If this is an enemy, then it will definitely be the most powerful enemy that human civilization has ever encountered since its birth. The proportion of its strength is even greater than when it faced the G1 galaxy coalition with a level two civilization.
At the beginning, our side could rely on its elite personnel and use guerrilla warfare tactics to defeat the enemy, but this time, it is absolutely impossible to do so.
It is also impossible to rely on home advantage and early planning to win like when facing the Storm Civilization in the H1 galaxy.
This is the vast space, not the home of human civilization. The enemy came too quickly, and there was no time to make any preliminary plans.
No matter what the future holds, human civilization can only suffer.
Zhao Changxing looked calm and could not see any panic.
With the issuance of the emergency order, hundreds of millions of Space Force soldiers all woke up and each entered their own combat spacecraft. More engineers and scientists also woke up from hibernation, activated space factories one after another, and began the production of war preparation materials.
The entire fleet temporarily started to advance and temporarily deviated from the current route. At the same time, the overall layout of the fleet was adjusted, and logistics, civilian, passenger, scientific research, and industrial spacecraft were moved to the core of the fleet, while the outer combat spacecraft were placed on tight alert.
Many automated military facilities have also been activated and launched into space.
All civilization leaders gathered in the core conference room, with people on duty 24 hours a day to prepare for war, closely watching any movements of the highly suspected fourth-level civilization fleet.
Even if they know that the enemy is invincible and invincible, if that moment comes, no one will doubt the determination of the human fleet to show its sword.
Even if he dies, he must die on the battlefield. Even if you die, you must try your best to bite off a piece of the enemy's flesh.
In this turbulent and tense atmosphere, as if a large army were approaching, the latest trends regarding the fleet were once again placed in front of the civilized leaders.
"We have observed that the opponent's fleet made a slight adjustment in its course five minutes ago. The adjusted course will pass us at the closest distance of about 5 billion kilometers."
call……
Under this news, the previous depression and tension melted instantly like lingering snow under the scorching sun.
A relaxed look finally appeared in front of people.
"It turns out it was really a coincidence..."
But people's good mood did not last long. Just less than a day later, another new piece of news arrived, making people's hearts mention it again.
"We observed that a spacecraft of the opponent's fleet broke away from the main force and was heading towards our fleet."
