Voyager detector launched by the United States in 1977 after more than 40 years of flight, it arrived at the edge of the solar system near the heliosphere. NASA found that there was a wall with a high temperature of 50,000 degrees near the Hitball layer, with a thickness of 750 million kilometers.
Some people suspect that this is a protective layer set by higher civilizations to protect humans on the earth. Some people also suspect that this firewall builds a cell that imprisons humans and limits human activities to the solar system.
[Interpretation of the secret of a high temperature wall of 50,000 degrees]
What is curious is that the surface temperature of the sun is only 6,000 degrees. How can the heliosphere outside the sun be 120 astronomical unit have a high temperature of nearly 50,000 degrees?
After careful detection by scientists, they found that this firewall was actually formed by solar wind of thin charged particles.
The sun is the largest source of radiation in the solar system. In addition to emitting light and releasing heat, the sun will continue to emit solar wind. This wind is mainly composed of very thin charged particles, which can blow to an area outside 120 astronomical units in the most extreme. The heliosphere in the solar system is also located just around 120 astronomical units from the sun, with a thickness of hundreds of millions of kilometers.
When thin charged particles in the heliosphere collide with cosmic high-energy rays outside the solar system, high temperatures of nearly 50,000 ℃ are generated.
Objectively speaking, the heliosphere effectively isolates high-energy rays from the universe, just like a protective barrier arranged outside the solar system, so that humans can live safely inside the solar system.
[Can the Voyager detector pass through the high-temperature wall]
Since the temperature of the heliosphere is so high, how can the Voyager detector pass through the high-temperature wall? There are two reasons here.
First, the charged particles in the heliosphere layer are very thin. Based on the fluctuation frequency of plasma detected by Voyager 1: the corresponding charged particle density is 2/cubic decimeter. That is to say, there are only 2 charged particles per liter. The diameter of Voyager 1 is 3.7 meters and its volume is less than 4 cubic meters.
Second, the collision between charged particles and cosmic high-energy rays is at the particle level, and it is completed instantly and disappears immediately. This instantaneous particle-level high temperature is completely different from the macro-continuous high temperature. So, when the Voyager detector passes through the heliosphere, it is not damaged.
[How far can the Voyager go]
Voyager is flying deep into the solar system at a speed of 48,000 km/h. Voyager arrived about 18 billion kilometers from Earth, and here it observed a sudden drop in plasma density from the sun, while high-energy cosmic ray particles from interstellar space suddenly rose. This shows that Voyager is also crossing the top of the heliosphere in the solar system and entering the depth space of the solar system.
However, scientists found that the nuclear battery on the Voyager will be exhausted. Once the nuclear battery can no longer provide energy for all the devices on the detector, it will lose contact with humans and wander in the stars forever.
Scientists also predict that if Voyager can successfully pass the Oort cloud covered with ice, meteorites and dust, Voyager will arrive at Proxima Centauri, the closest to the solar system in 16,700 years.
