The gods of heaven indicated that An Ruoxuan's spacecraft had left the Kuiper Belt and reached the heliopause. www.biquge.info The heliopause, also known as the heliopause, is the boundary in astronomy that indicates that the solar wind from the sun meets the interstellar medium and stagnates. The radius of the heliopause is 120 AU, and the thickness is 0.5 AU.

The solar wind is a stream of charged particles from supersonic plasma ejected from the upper atmosphere of a star. The solar wind is a continuous stream of high-velocity charged particles that comes from the Sun and moves at a speed of 200-800 km/s. Although this substance is different from the air on the earth in that it is not composed of gas molecules, but is composed of simpler elementary particles - protons and electrons, which are one level smaller than atoms, but the effect of their flow is very similar to that of air flowing, so it is called solar wind.

The density of the solar wind is very thin and insignificant compared to the density of the wind on Earth. However, although the solar wind is very thin, it blows far more violently than the wind on earth. The wind speed of the solar wind is often maintained at 350~450 kilometers per second near the earth, which is tens of thousands of times the wind speed of the earth, and can reach more than 800 kilometers per second when it is most violent.

Because the solar wind is so thin, even if its wind speed is tens of thousands of times that of the earth, we will not have a direct perception. In space, we can't even feel the presence of the solar wind without the help of scientific research equipment. The invisible and insubstantial solar wind is invisible to our naked eyes, but it has a real impact on our lives.

There are hurricanes on Earth, and there are times when the solar wind is also violent. When a solar storm erupts, a large number of charged particles are released to form a high-speed particle stream, which seriously affects the earth's space environment, destroys the ozone layer, interferes with wireless communications, and also has some hazards to human health.

Of course, in addition to the above effects, the most direct sense that the solar wind brings to us is the aurora. Auroras appear in the sky above the high magnetic latitudes of the planet and are a brilliant and colorful luminous phenomenon. Auroras are brilliant and beautiful at night due to the flow of charged particles from the sun into the earth's magnetic field, and appear at night at high altitude in the areas near the north and south poles of the earth.

Earth's auroras are produced by the excitation of molecules or atoms in the upper atmosphere by a stream of high-energy charged particles from the Earth's magnetosphere or the Sun. But at the top of the heliosphere, as the "Daystar" spacecraft continued to advance, An Ruoxuan saw another beautiful interstellar brilliance, a brilliance no less than the aurora.

The bubbles blown by the solar wind in the interstellar medium are called the heliosphere, and beyond the boundaries of this bubble are the interstellar mediums that weaken the speed of the solar wind. The boundary that the solar wind is ultimately able to reach in the interstellar medium is called the heliopause and is considered to be the outer boundary of the solar system.

To put it simply, the heliosphere acts as a shield of natural energy emitted by the sun, blocking interstellar matter from outside the solar system. Of course, this so-called energy shield can only block particle-level invasions from interstellar space, and the heliopause is the front line of the solar wind's resistance to invasions.

Just as the duel between the solar wind and the Earth's magnetic field in the ionosphere is as fierce as the duel between the solar wind and interstellar matter at the heliosphere apex. The original particle-level collision produced a glow visible to the naked eye, a charming light blue brilliance. The "Morning Star" spacecraft traveling in the heliopause is like driving in a blue ocean.

"The spacecraft is being hit by high-velocity cosmic particles, and it is recommended to turn on the spacecraft's magnetic shield." The figure of the god appeared beside An Ruoxuan, "Open it immediately." An Ruoxuan did not hesitate. The Celestial God knows more about the ship under his feet than he does.

The so-called magnetic shield is not high-tech, it is a simple magnetic field generating device, which uses the magnetic field to block the cosmic particles that would otherwise rush into the spacecraft in advance. After the magnetic shield was activated, a blue light shield visible to the naked eye was formed outside the spacecraft, which was the "aurora" formed by the impact of cosmic particles on the magnetic field.

An Ruoxuan can now be said to be about to leave the solar system, as long as the "Daystar" spacecraft passes through the heliopause with a thickness of only 0.5 astronomical units, it will be regarded as officially leaving the solar system and entering interstellar space. Although the sun's gravitational pull still affects the spacecraft, the solar wind can no longer blow the spacecraft.

The heliosphere is not only the shield of the solar system, but also the shield of the earth and the shield of mankind. The universe is filled with various energy rays from various stars, and these energy rays can be said to be 99% harmful to human beings. In the solar system, there is a solar wind that holds up a large umbrella for humans; On Earth, the ionosphere and the Earth's magnetic field hold up a second umbrella for mankind. But what is there on board the "Daystar" spacecraft?

An Ruoxuan They can only rely on the equipment on the spaceship, cosmic rays are like invisible killers, which can take people's lives at any time. Magnetic shields are not omnipotent, and many high-energy particles can still break through the constraints of magnetic fields. However, after being weakened by the spaceship's own material, most of the cosmic rays can still be filtered out.

Of course, in An Ruoxuan's eyes, the heliosphere may just be a shield for the interstellar medium, but in the eyes of Luo Tian or some cultivators, the role of the heliosphere is more than that. Not all planets in the universe are suitable for cultivators to live in, and although cultivators can endure most harsh environments that are unimaginable to ordinary people, at the same time, they still have high requirements for dark energy.

This requirement is not only the requirement of content and concentration, but also the requirement of stability. The power of lightning is indeed huge, but it is impossible for humans to really apply it. The same is true of dark energy, although the dark energy in the cosmic void is not as harmful to people as lightning, most of it is still quite violent, and it is not suitable for cultivators to absorb and utilize.

The solar wind can block the invasion of interstellar matter, but it cannot stop the spread of dark energy. After the invasion of the unknown energy emitted by the sun, the originally violent dark energy became docile, and it was more suitable for the needs of cultivators. An Ruoxuan had already felt the changes in her surroundings slightly, but she was not as clear as Luo Tian.

Leaving the confines of the solar system, the entire universe has undergone changes unknown to human beings. Before the destruction of the earth, no human beings had ever reached this place in person, and even though many probes had left the scope of the solar system, there was still too little extrasolar information that humans could grasp.

Interstellar space is still too mysterious for human beings, full of endless unknowns and risks. An Ruoxuan They are the vanguard of mankind, but they are also the last hope of mankind. Maybe with Luo Tian's support, An Ruoxuan and they can go further.