Chen Yue designed a more complicated route for the fleet's journey out of the solar system.

After leaving Jupiter's system, the human fleet will first visit Ceres.

Ceres is a huge dwarf planet that reaches nearly a thousand kilometers in diameter. Among the dwarf planets, it is not small.

Because it has some rare minerals stored on it, Chen Yue has also built a base on it before. But now, of course, it's been cleaned up.

With the gravitational pull of Ceres, the fleet will use the gravitational slingshot principle to complete an acceleration and then move on to Mars.

Yes, even if he had reached the level of third-level civilization, Chen Yue did not forget to use the planetary gravity during the acceleration of the fleet.

After all, with such a big planet there, it would be a shame not to pick up some wool by the way. Energy savings are a little bit, and there is nowhere to replenish without leaving the solar system.

The fleet passed over the unremarkable planet Ceres, and it didn't take long for it to come to Mars.

The building materials of the original Martian base are still in the heavy transport ship at the moment, and they are kept by Chen Yue as a souvenir.

Recalling the years when he lived in the Mars base when he was still alive, Chen Yue felt a sigh of emotion in his heart. Of course, this did not prevent him from picking up a handful of wool from Mars, which made the fleet speed up a little more.

The Earth's orbit is too chaotic right now, so it's better not to go for the time being, in case it hits something, it will be troublesome.

Chen Yue bypassed the Earth's orbit and headed straight for Mercury.

As for Venus, it was temporarily abandoned because of the unsuitable orbit.

With another handful of Mercury's wool, the fleet welcomed the largest fat sheep in the solar system, the sun.

Because the sun is the largest, it can also gather the most wool, and even all the other planets combined are far less than equal.

At this stage, the Sun is still in the furious phase after being hit by the debris of the Earth. In fact, for millions of years, the sun simply does not calm down.

That's how big it is.

At this stage, the average radiation power of the sun is about 6% higher than that before the Earth's explosion. If the earth is still there, don't look at the improvement of only 6%, it will also mean that the sea is dry and the river is dry, and the whole earth will become a scorched earth.

Chen Yue still remembers his caution and sincere fear when he flew over the sun on the Glowing Confusion spaceship. But things are different now. Even if the solar radiation doubled again, Chen Yue didn't care.

Passing by this huge fireball, observing the sunset rising above the sun, watching the sunspots one by one, and experiencing the immensity and fury of the sun, the human fleet passed smoothly and continued to sail away.

After that, there will be no wool to pluck. Because the rest of the planets are not in the right position.

Then you can only accelerate it honestly.

At this moment, the entire fleet maintains an acceleration of 0.2 meters per square second, and will not stop until it accelerates until it reaches 50% of the speed of light, or 150,000 kilometers per second.

This means that the acceleration of this fleet will continue for about 24 years.

After that, the human fleet will enter the phase of inertial navigation, relying on inertia to fly forward. It wasn't until not far from Wang Liangsan that the deceleration process would start.

With a series of previous wool picks, coupled with continuous acceleration, the human fleet has reached a speed of 300 kilometers per second relative to the sun.

After a month, the distance between the fleet and the sun reached 1.45 billion kilometers. The speed of the fleet reached about 820 kilometers per second.

From this distance, the Sun has lost its disk structure and has degenerated into a small point of light. But this little spot of light was still very bright, brighter than the full moon seen above the earth, and even a little dazzling.

It's a long distance, but it's still under the control of the sun. Whether it's the magnetic field, gravity, or energy, in every way, it belongs to the territory of the sun.

The human fleet goes all the way. About a month later, the human fleet crossed the orbit of Neptune, the farthest planet in the solar system.

As for Pluto, it is no longer a big planet, it can only be considered a dwarf planet.

After another fifty days, the human fleet came to a special place.

At this moment, the human fleet is traveling at a speed of 2,200 kilometers per second, and the distance from the sun at this moment is about 12 billion kilometers.

The human fleet has reached the heliopause.

In the Milky Way, the void between stars and stars is filled with interstellar media. They are mainly composed of hydrogen and helium, and may exist in the form of ions, atoms and molecules.

The sun, in the form of solar wind, "blows" a space that belongs exclusively to the solar system in the ubiquitous interstellar medium. Those interstellar mediums, due to the solar magnetic field and the solar wind, cannot enter the inner solar system.

Human civilization was born from the earth, thanks in part. It was precisely because the solar wind kept out the energetic particles from the universe that primitive life on Earth was able to develop and evolve with peace of mind billions of years ago.

However, there is also a limit to the power of the sun.

Here, the high-energy charged particles from the Sun, known as the solar wind, finally run out of strength after flying a distance of more than 10 billion kilometers – and at the same time "pushing" the galactic interstellar medium away more than 10 billion kilometers.

The solar wind, which stops here, forms a stalemate with the ubiquitous interstellar medium.

This is the heliopause.

Crossing this is the first step out of the solar system.

From now on, the space in which Chen Yue is located will be the world of interstellar media.

However, there is still a long, long way to go before we can truly leave the solar system.

The solar system is huge beyond people's imagination.

At this moment, the sun is still a bright dot to the naked eye, but it is no longer as powerful as before. Except for a little brighter, it is no longer fundamentally different from the rest of the stars in the universe.

But such a small bright spot dominates everything in this space.

Chen Yue did not stop, continued to move forward, and stepped into the world of interstellar medium without hesitation.

This is a place where human civilization has never set foot in the past. In the age of Earth, not even the farthest flying deep space probe ever reached here.

Of course, Chen Yue's probe has been here. But it was the first time for Chen Yue to come in person.

It's vast, it's empty, it's cold. But even in such a place, there are macroscopic celestial bodies.

The celestial bodies here are collectively referred to as discrete disk celestial bodies.