How big is our solar system? Where is the end of the solar system?

Three pictures may look more intuitive! Before looking at the picture, let's briefly introduce two units of length: astronomical units (the average distance between the Earth and the Sun, 100 million kilometers) and light years (the distance traveled by light for hundreds of millions of years)!

The above figure can intuitively see the distribution and size of the celestial bodies in the solar system, the most central sphere represents the sun, the orbit near the sun represents the orbit of the eight planets, and the horizontal scale represents the distance (astronomical unit)! Neptune, the outermost of the eight planets, is about 30 AU from the Sun, and the boundaries of the solar system can stretch to at least 50,000 AU, with most of the outer space being Oort clouds!

The second picture. It illustrates the distribution of Pluto's orbit, the Kuiper Belt and the Oort Cloud, which was once the ninth largest planet in the solar system, the Kuiper Belt is located on the outer side of Pluto's orbit, and the small dot in the middle of the diagram encompasses the entire solar system within the Kuiper Belt!

The third diagram more intuitively reflects the structure of the solar system, and the three English words from the inside to the outside are Neptune's orbit, the Kuiper belt, and the Oort cloud. It can be seen that most of the space in the outer reaches of the solar system is the Oort cloud. In fact, this image is far from representing the true size of the solar system, and the Oort cloud will be much wider than it seems!

Having said all that, you should have an intuitive idea of the size of the solar system. It is generally accepted that the radius of the solar system can reach one light-year, which means that the diameter of the sun is at least 2 light-years! So how do you define the boundaries of the solar system?

In the end, ** is the boundary of the solar system? There are two forms! First, the scope of the influence of the solar wind.

We know that the solar wind affects the entire solar system, and that the edge of the solar system is called the "heliopause", where it encounters the interstellar medium and forces the solar wind to stop expanding outward, and at the same time the solar wind protects life in the solar system from cosmic rays! Second, the edge of the solar system is where the gravitational pull of the sun balances with the gravitational pull of nearby stars. Theoretically, the gravitational pull of the sun can extend to infinity, but since there are other stars in the universe as well, the gravitational pull of the sun will balance with the gravitational pull of other stars somewhere, and that is the edge of the solar system!

Our solar system is very large, there are many planets in the solar system, and there are many stars that we don't know about. No one knows that the end of the solar system is in **, although human beings are exploring the solar system, but it is not yet known that the end of the solar system is in **.

Our solar system is very large, and no one knows how big it is. I just know that there are many planets in the solar system. I don't know if the end of the solar system is in **. People are still in the process of exploring.

Very large, the whole range of the solar system is very large, it has many stars in it, and the end of the solar system belongs to the edge of the sun.

The solar system is very large, its scope is beyond our imagination, a very vast range, the end of the solar system is not clear, and the solar system is still being explored.

The Sun is a star that has created a large family around it with its outstanding energy. In this family, in addition to our Earth, there are 8 planets of different sizes and characteristics, and dozens of moons; There are countless asteroids; There are comets with unique shapes; There are also thousands of meteors and dust material. The sun is the leader of its family, and all the members of this family are constantly rotating around the sun as the core, forming an orderly system called the solar system.

The conventional wisdom is that Neptune's orbit among the eight planets is considered to be the edge of the solar system, but the orbit of Neptune is only 4.5 billion kilometers (about 30 astronomical units) from the average value of the sun.

The Kuiper Belt is hundreds of astronomical units from the Sun, the edge is at least 70 billion kilometers away from the Sun, and the area that the solar wind alone can reach is at least 120-160 astronomical units, and it is about 180-24 billion kilometers away from the Sun.

However, beyond the heliopause and the Kuiper belt, there is also the Oort cloud, although it has long been determined that the Oort cloud exists, but scientists still know very little about it, and at this stage it is defined as a hypothetical spherical cloud surrounding the solar system, which is like the outer shell of the solar system, there are many small comets here, and scientists widely believe that the Oort cloud is the remnant of the nebula that produced the solar system 5 billion light years ago, so this cloud is considered to be the "mother of the solar system".

The Oort Nebula is very large, with a diameter of 200 million light-years, and a distance of 5-100,000 astronomical units from the Sun, which has already widened to 1 4 places from the nearest star, Proxima Centauri.

But scientists often take the longest distance that the solar wind can reach as the edge of the solar system, because then outward, it belongs to the space where interstellar matter exists, if the size of the solar system is considered in this way, then the diameter of the solar system will be at least 40 billion kilometers, but the change in range is also very large, because the difference in the distance of the solar wind in different directions is quite large, in the angle of the solar system, the edge of the solar wind is about 20 billion kilometers away from us, However, the solar wind in the direction of the solar system is several times this distance, so it is not easy to accurately measure and define the extent of the solar system.

With a diameter of about two light-years, the solar system is very large, with many planets, and it takes a very long time to fly out of the solar system.

The extent of the solar system is very large, and there are no words to describe the extent of the solar system, except to say that the solar system is really a distant star.

It is particularly large, it is boundless, there is no way to judge it with an accurate concept, and the diameter has exceeded 200 million kilometers.

The scope of the solar system is very large and contains many planets. There are also many mysteries to explore.

Summary. With the advancement of science and technology, the size of the solar system has been continuously increased, and the size has not been determined.

In general, if the radius of the solar system reaches more than 6 billion kilometers from the Sun to Pluto's orbit, then the diameter of the solar system should be 12 billion kilometers.

How big is the solar system?

With the advancement of science and technology, the size of the solar system has been continuously increased, and the size has not been determined. In general, if the radius of the solar system reaches more than 6 billion kilometers from the Sun to Pluto's orbit, then the diameter of the solar system should be 12 billion kilometers.

With the further exploration of the solar system by science and astronomers, it was finally discovered that the boundaries of the solar system are much more than that, that is, the diameter of the solar system is much larger than 12 billion kilometers.

Generally speaking, if the solar system starts from the sun to the orbit of Pluto, its radius reaches more than 6 billion kilometers, then the diameter of the solar system should be 12 billion kilometers, and the space of 12 billion kilometers should be large enough, it should be the end of the solar system, but with the further exploration of the solar system by science and technology and astronomers, it was finally found that the boundaries of the solar system are far more than these, that is to say, the diameter of the solar system is far greater than 12 billion kilometers, so what is in the space beyond Pluto? It has been observed that in the airspace beyond Pluto, there is an asteroid belt, and the asteroid belt there is much larger than the asteroid belt in the solar system, there are more asteroids there, and the radius of the solar system is much larger there, it can reach 80 to 10 billion kilometers away, and there, in the outer space of outer space, there are a lot of dirty snowballs of ice, snow and rocks in this asteroid cloud belt, which is the comet, and the short-period comets of our solar system come from here.

The heliosphere can be divided into two regions, and the maximum distance traveled by the solar wind is about 95 AU, which is three times the orbit of Pluto. This is the edge of the terminal seismic wave, where the solar wind and the interstellar medium collide and impulse. The solar wind slows down, coalesces and becomes more chaotic here, forming a huge ovoid structure, the so-called heliosheath, which looks and behaves like a comet's tail, which continues outward for about 40 AU in the direction of the stellar wind, but extends several times this distance at the tail end in the opposite direction.

The outer edge of the heliosphere is the heliopause, where the solar wind finally terminates, and beyond is interstellar space.

The shape and form of the outer rim of the heliosphere are likely influenced by the hydrodynamics of the interaction with interstellar matter, as well as by the dominant solar magnetic field at the southern end; For example, it is 9 more astronomical units (about 1.5 billion kilometers) in the Northern Hemisphere than in the Southern HemisphereBeyond the heliopause, at about 230 AU, there is a bow shock wave, which is generated when the Sun travels through the Milky Way.

The solar system does not have a universally agreed range, according to different identification parties.

law, the size of the solar system is also different: if the Kuiper belt is taken as the too.

The boundaries of the solar system, then the size of the solar system is 50 1,000 astronomical units.

1 astronomical unit is approximately equal to 100 million kilometers); If to the top of the solar wind.

End as the edge of the solar system, the size of the solar system is 100 160 astronomical.

Unit; If the gravitational range of the sun is counted as the edge, then theoretically.

The calculated size of the solar system is about 15,230,000 astronomical units.

The boundaries of the solar system are yet to be further studied.

The solar system is a celestial system centered on the sun, and in the whole system, all celestial bodies revolve around the sun, let us see in 4 minutes, how big the solar system is, it may be beyond your imagination!

The closest planet to the sun is Mercury, the distance between Mercury and the sun is about 57.9 million kilometers, Mercury is also the smallest planet in the solar system, in ancient times in our country, Mercury also has the nickname of "star star", Mercury and the earth have the same rocky individual, belongs to one of the four terrestrial planets in the solar system.

The orbital period is days, and it meets the Earth once in about 116 days, and its orbital speed is much faster than that of other planets in the solar system. Mercury is known as Mercury for its rapid movement, and is the messenger god of Roman mythology.

Mercury is the planet with the largest temperature difference between day and night on the surface, and its atmosphere is extremely thin to effectively retain heat, with temperatures reaching up to 432°C at the equator during the day and dropping to -172°C at night.

The solar system is more important than the Sun in Jupiter. Jupiter, the giant planet that holds most of the dust particles in the solar system, saves the Earth from frequent catastrophes. The Moon, the Moon's tides with the Earth make the Earth filial.

The Solar System is a planetary system, and since no other planetary system has been officially discovered, it is impossible to compare the size of the Solar System with other planetary systems. I can only compare planetary systems with other celestial systems. Smaller than the planetary system are the satellite system (e.g., the Earth-Moon system), larger than the planetary system are the star system (e.g., the Milky Way), larger are the group of galaxies (e.g., the local group of galaxies) and the star blind cluster (e.g., the Virgo cluster), and the largest is the supercluster (e.g., guess the local supercluster).

The total galaxy is a general term for the observed universe and is not considered a true celestial system, as it is not a gravitational spike lead binding system.

The sun is the most important in the solar system. The solar system is a system of celestial bodies centered on the Sun and bound by the Sun's gravitational auspiciousness, including the Sun, planets and their moons, dwarf planets, asteroids, comets, and interplanetary matter.

Solar System Friends is located about 10,000 light-years from the center of the Milky Way.

In the solar system, the position of the sun is unshakable, and for human beings and all animals and plants, the earth is the heaviest, and for the earth, Jupiter is its protector.

First of all, the Sun is not a planet, it is a star. Second, there is only one star in the solar system, do you think it matters? It should be said that among the major planets, almost all the energy of the book comes from the sun, including the earth, except for a very small part of the earth's energy from itself, all other energy comes from the sun's rays, if the sun is without Zhenghong, there will be nothing.

Earth's life would cease to exist without the sun.

Jupiter, the giant planet in the solar system, shielded the Earth from most of the dust particles buried in the Great Liquid Field, saving the Earth from frequent catastrophes.

The Moon, the tides of the Moon and the Earth make the Earth's crustal movement more active, bringing a wealth of surface species to the Earth.