It doesn't seem like a good place to consolidate power.

What's more, Proxima Centauri is too close to the solar system.

If later aliens come to Earth.

Then nine times out of ten, they will send someone to Proxima Centauri to find themselves.

I believe that it should not be a safe place.

If you don't go to Proxima Centauri, you have to go somewhere else.

For example, Barnard, who is 5.9 light-years away from Earth.

Seven points seven light years Wolf.

Sirius, eight .6 light-years.

Or the Cetus UV at a distance of 8.7 light years from Earth, and so on.

None of these star systems are more than ten light-years away.

Theoretically, they are all more suitable places.

But now the question Su Han is facing is not the closer the better, but the farther the better.

Within ten light years is a high-risk area in Su Han's view.

In case the aliens kill me within a few years of arriving in these star systems, then I have been busy for so many years, isn't it in vain?

None of the stars in close proximity seem to be the best choice.

But the problem is that star systems more than ten light-years away seem to be too far away.

Because even the light has to run for ten years.

Even if Huaxia can accelerate to ten percent of the speed of light.

Theoretically, it will also take a hundred years to fly.

Count the time spent accelerating and decelerating.

In the end, it may take more than 150 years.

Thinking about it also makes Su Han a little big.

Unless you can make your ship reach fifty percent of the speed of light.

In fact, Su Han has been frantically collecting helium-three over the years.

Now the helium-three on board is enough to accelerate its own fleet to fifty percent of the speed of light.

But the acceleration efficiency of the working fluid engine is too low.

The fleet wants to accelerate to fifty percent of the speed of light.

It may take more than a thousand years to do so.

And speed up by a thousand years!

It will take a thousand years to slow down!

Just accelerating and decelerating is 2,000 years.

It is equivalent to running from the Han Dynasty to modern times.

The huge time cost was unacceptable to Su Han.

If you want to accelerate quickly, it is best to use a working fluid state.

It takes a short time.

It's been about 20 years.

But the problem is that the amount of fuel consumed in the working fluid state is very staggering.

If Su Han wanted to accelerate the entire fleet to fifty percent of the speed of light.

About 100 million tonnes of He3 are needed.

Such a large helium-3 consumption would not be enough to turn the entire fleet into fuel.

Su Han will also feel a little big.

Su Han said: "That's right, Shenlong! Which star system do you think would be more appropriate for us to go to? ”

Shenlong said: "Theoretically, the closer the star system, the more cost-effective. But the recent Proxima Centauri star system is more complex and not optimal.

The second-closest Barnard star system, which is only a red dwarf, has been observed to have only two gas planets, which is not conducive to long-term development.

The situation is similar with the Wolff-359 star system.

The best is actually Sirius.

Sirius is a blue dwarf, large enough and has a white dwarf as a companion star. The overall star system is large enough that it should theoretically be more resourceful. Although blue dwarfs have a much shorter lifespan than yellow dwarfs, Sirius is still in the main-sequence stage and is still very safe for a short period of time. ”

Su Han said: "But the problem is that I want to find a star system that is a little farther away and a little smaller. Preferably one of the humble brown or red dwarfs! It's better to be able to get up and develop. Distance! Preferably less than 10 light-years away and less than 20 light-years.

Don't you have any good goals? ”

Shenlong said: "There are many goals. Within 20 light-years, there are many brown dwarfs that barely emit light, as well as red dwarfs that have very low brightness. But the problem now is that star systems ten light-years away will have to fly for a long time. At the speed of the Huaxia! It may take hundreds of years to fly. Are the bosses sure they intend to fly for so long? ”

Su Han said: "Of course, it is best to be able to hurry. You said that with the helium three reserves on our battleship! Is there a better way to speed up? ”

Shenlong said: "If the boss wants to increase the speed and reduce the acceleration time at the same time." The best thing to do is to use a hybrid. That is, it is used in combination with and without working fluid. Theoretically, in 50 years, a spaceship can be accelerated to 18 percent of the speed of light! But to consume forty-five percent of the fleet's fuel. In this way, about 150 years can fly about 15 light years. But the problem is that after the deceleration is successful, it can no longer accelerate. If the boss can't find a stable supply of helium-3 in their system. The fleet will lose power. ”

Su Han thought for a while and said, "It's okay! As long as we can get to a star system. I believe that the remaining time will be enough for us to complete the upgrade of the fusion engine. ”

For Su Han, the most abundant resource in the universe is hydrogen.

Theoretically, the most cost-effective fuel for a fusion engine is, of course, hydrogen.

But the problem is that when hydrogen is fused, neutrons are easily generated.

Neutrons can cause damage to the engine.

It doesn't matter if it's on Earth yet.

If it's broken, it's a big deal to replace it.

But in astronautics, if the parts are broken, the difficulty of replacing them can be imagined.

Not to mention hundreds of years of continuous sailing.

How many accessories should I bring?

At least now that the aliens are about to kill them.

Su Han had the time to complete the difficult nuclear fusion engine of fusion.

However, if a relatively stable star system can be found now.

Gou up and develop.

Then conquer the fusion technology.

I believe that the whole universe will be free to roam in the future.

……

Su Han also made a decision here.

It was decided to fly in the direction of the Gliese star system first.

Then, within 16 light-years of the shipping route, find an inconspicuous red dwarf or brown dwarf star with a small size and low brightness, and develop it in a low-key manner.

I believe that no matter how much those aliens think, they can't imagine that they will find such a small place.

Wait for yourself to conquer more advanced engine technology.

Find a better place to develop.

……

Su Han then convened the first high-level council.

Eighty percent of the board of directors of the Huaxia are members of the Dragon Academy of Sciences.

The remaining twenty percent are executives from a few Martian cities.

But without exception, all of them are Su Han's cronies.

These people were loyal to Su Han.

After all, the unfaithful are not qualified to sit here.

Su Han looked at the crowd: "This time the council is convened!" I have important things to say to the trustees. I believe that all the directors should also have that preparation, this trip is destined to be a battle with time.

Different star systems are measured in light-years.

Even with Huaxia's ability, if it wants to fly to different star systems, it will take a hundred years at least, and hundreds of years at most.

It would have been normal! We should choose a star system that is relatively close together. But the situation of the spaceship, I believe everyone is also clear, it is difficult to accelerate, it is also difficult to slow down, and it may take more than 100 years just to accelerate and decelerate.