The solar system is a collection of celestial bodies centered on the Sun and subject to the Sun's gravitational constraints. Pen? Interesting? Pavilion wWw. ｂiquge。 ｉｎfo

The Sun is a typical star of the Milky Way, located on the branch cantilever Orion Arm, 26,100 light-years from the center of the Milky Way, and the solar system moves at a speed of about 240 km/s, making one revolution in 226 million years.

Broadly speaking, the domain of the solar system includes the sun, 4 Earth-like planets, an asteroid belt of many small rocks, and 4 gas-filled Jupiter-like planets filled with frozen small rocks, known as the second small celestial region of the Kuiper belt.

Beyond the Kuiper Belt there are the ecliptic discrete disk and heliosphere, and the still hypothetical Oort Cloud.

The protagonist of the solar system is the central Sun, a main-sequence star with a spectral classification of G2V, which has 99.86% of the known mass in the solar system and dominates the solar system with absolute gravitational pull.

The planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune at their distance from the Sun, with natural moons orbiting 6 of the 8.

The five dwarf planets include Pluto, known as Pluto, the largest known objects in the Kuiper Belt, Oris and Haumea, the largest celestial body in the asteroid belt, Ceres, and Eris, a discrete body in the ecliptic.

The larger moons in the solar system (more than 3,000 km) include Earth's moon Moon, Jupiter's Galileo moons Europa (Io), Europa, Ganymede (Ganymede), Ganymede (Callisto), and Saturn's moon Titan (Titan), as well as Neptune's captured moon Triton (Triton).

Flying out of the solar system has been a long-standing dream of mankind!

However, until now, there are still many people who are pessimistic that humans may never be able to fly out of the solar system, and that the solar system is a prison that imprisons us!

Although, it took Voyager 1 36 years to fly out of the solar system, and the pupil of the earth is about to fly out of the solar system.

But strictly speaking, this cannot be said to be the distance of human flight, because they do not fly manned at all.

At present, the farthest distance that human beings can fly is only as far as that from Earth to Mars, which is not even an astronomical unit.

"The Pupil of the Earth must have reached Neptune soon." Five hours have passed, and Yuan Haochen estimated the itinerary of the Earth Pupil in his heart, "Soon, it will fly out of the solar system, I don't know when humans will be able to take this step......"

Yuan Haochen knew in his heart that if he did not rely on extraterrestrial technology, according to the space technology currently mastered by mankind, it would still be far from meeting the needs of flying out of the solar system.

"Earth's civilization is still too small." Yuan Haochen sighed secretly.

The Earth Pupil is only a miniature probe, its light weight and weak body, so it can be accelerated to nearly the speed of light by laser sail technology.

And a real manned spacecraft wants to use laser sails to accelerate to close to the speed of light, which is simply a fantasy.

"If you want to meet the needs of the giant spaceship required by the immigration of all mankind...... hey~"

It was already difficult for Yuan Haochen to imagine the answer to this question.

Through the experience of working in the Interstellar Exploration Alliance in the past few years, he can clearly feel the strong desire of the Alliance to explore habitable planets outside the solar system.

Combined with the previous conversation with Prince Ahmet and the chairman, he could faintly perceive in his heart that there must be a force that threatens the existence of the earth's civilization and forces mankind to speed up the pace of interstellar exploration.

However, if you want to explore another "earth" in the vast universe, with the existing scientific and technological strength of the earth's civilization, how difficult it is!!

In view of the vastness of the cosmic scale, even if the speed of human spacecraft can be close to the speed of light, it will take nearly 10 years to get to the nearest star to the solar system, the Centaur Alpha Galaxy, hundreds of thousands of years to make a circle in the Milky Way, more than 2.3 million years to fly out of the Milky Way and reach the nearest Andromeda Galaxy, and tens of billions of years to travel around the universe.

Therefore, many scientists are pinning their hopes on the velocity effect of Einstein's theory of relativity.

That is, when the spacecraft flies at high speed, time will expand, the distance will be shortened, the closer to the speed of light, the more significant the speed effect, and when it is infinitely close to the speed of light, time will almost stand still, and the size will be almost zero.

However, this is only a theory at present, and the truth is not yet known.

"Team leader, according to the signal analysis, the pupil of the earth has just flown past Neptune, and in about 1 hour and 39 minutes, it will pass the orbit of Pluto."

The work report of the project team members interrupted Yuan Chen's train of thought.

"Okay, keep watching."

Yuan Haochen decided to fly out of the solar system with the pupil of the earth, and then go to other things.

He is well aware that the Earth Pupil has the most advanced intelligent flight operating system, and the extraterrestrial civilization project team has also arranged a special team to conduct 24-hour uninterrupted monitoring. At this stage, it doesn't make much sense for him to stay here.

Six hours and 46 minutes after the Pupil of the Earth left, the Pupil of the Earth flew through the orbit of Pluto.

After another three hours, the Pupil of Earth, after bidding farewell to all the planets around the Sun, began to sail towards the more remote frontiers, first passing through the terminal shockwave, the innermost layer of the heliosphere.

Here, the area where the solar wind begins to slow down due to contact with the interstellar medium, where the speed of the solar wind particles drops to subsonic speed for the first time and heats up due to impact friction.

The Earth Pupil will enter the solar sheath (also known as the solar wind sheath) after passing through the terminal shock wave (terminationshock). Once the solar wind reaches subsonic speeds, it is affected by the fluids of the surrounding interstellar medium, causing the solar wind to shape the tail of a comet square behind the Sun.

"The pupil of the earth detected a sudden drop in the density of solar wind particles and a fourfold increase in plasma density."

"The velocity value of the solar wind has dropped to zero, and the pupil of the earth has passed through the heliosphere, bidding farewell to the heliosphere and entering interstellar space."

Listening to the operator's report, Yuan Haochen nodded silently, he clearly had left the range of the chivalrous solar system.

The solar wind "blowing" here is the end of the strong crossbow, replaced by low-temperature particles in interstellar space.

"The pupil of the earth has flown over 120 astronomical units, and the solar system where human beings are located is really just a drop in the ocean in the universe!" Yuan Haochen said with emotion.

In places where the solar wind does not "blow", the energy that the light sails of the Earth Pupil can receive will also be greatly reduced.

During this long dark journey, one can only pray that the course of the Earth Pupil does not deviate too much. (To be continued.) )