The diameter of the solar system is just one light year, why has mankind not broken through so far?

In fact, the diameter of the solar system is about 2 light years, and 1 light year is the radius of the solar system. At present, the fastest spacecraft capable of long-distance space flight is Voyager 1, with a speed of 17 kilometers per second, and it will take 10,000 years to break through the solar system at a distance of 1 light year.

Whether Voyager 1 can break through the solar system depends on how far human space technology has developed, and whether it can build a spacecraft with ultra-high-speed flight or space jumping ability. If you don't take into account the energy ** and spacecraft loss and failure rate, the spacecraft that can carry out long-term space flight is Voyager 1, which has been flying for more than 40 years so far, 22 billion kilometers away from us, and is still too far from flying 1 light year away from the solar system, which is 9.46 trillion kilometers. Moreover, the current Voyager 1 is close to the brink of scrapping, and it is difficult to maintain normal operation, which shows that human beings do not yet have the technological level to break through the solar system.

Obstruction of celestial bodiesIn the process of human spacecraft breaking through the solar system, in addition to the speed limit, the existence of countless celestial bodies in the solar system will also play an obstructive role. In addition to the few large planets we are familiar with, there are also asteroid belts, Oort clouds, Kuiper belts, and numerous meteorites and asteroids scattered in the solar system, all of which may cause collision accidents with spacecraft.

Flying down the solar systemSome people think that the radius of the solar system is too wide, and we can choose to fly below or above the solar system, so that we don't need to fly that long distance. In fact, this is also unrealistic, because there are southeast, northwest, and up and down on the earth, but in the universe, this concept is blurred, because the universe is too large to have a difference between up and down, left and right, and second, the sun, including all the planets in the solar system, are constantly moving, and their positions are also changing randomly, which also makes it difficult to have a fixed up and down direction when breaking through the solar system.

The speed of light is 300,000 kilometers per second, and even light has to travel for a year to get out of the solar system, and the distance of one light year is very long and far away with no end in sight for human beings now.

One light year is actually a long distance, not as simple as imagined, and it also faces great challenges and difficulties.

There is a new boundary outside the old boundary of the solar system, this new boundary is the Oort Nebula, the Oort cloud is a layer of cosmic nebula wrapped around the outer periphery of the solar system, its diameter is two light years, that is to say, the boundary of the solar system, the actual space is much larger than imagined, originally when the Oort cloud was not found, the radius of the solar system is only 14.8 billion kilometers, and if the Oort cloud is the real boundary of the solar system, then the diameter of the solar system directly increases from 15 billion kilometers to 1 light year, The diameter has also soared to two light years, don't underestimate the distance of these two light years, even if it flies at the maximum speed of Voyager 1 at 60,000 kilometers per hour, then it will take 30,000 years to fly out of the solar system through the Oort cloud from the earth, which is still a theoretical time, because Voyager 1 cannot fly at the highest speed at all times, it needs to fly out at an economic speed, so that it can fly farther, if it flies out of the solar system at an economic speed, it will take longer, and human civilization is only 5000 years old, And it takes tens of thousands of years to fly out of the solar system, and such a time cost is simply unbearable for mankind.

About light years. If Neptune is used as the solar system.

boundary, then the diameter of the solar system is 60 astronomical units, or about 9 billion kilometers, or about one light-year. If the orbits of comets (Oort clouds) are taken into account, the diameter of the solar system can reach 6-120,000 astronomical units, or trillion kilometers, or about light years.

The solar system is a collection of celestial bodies centered on the Sun and subject to the Sun's gravitational constraints. Including the eight planets.

In order from near to far from the Sun: Mercury.

Venus, Earth, Mars, Jupiter.

Saturn, Uranus, Neptune), as well as at least 173 known moons, 5 identified dwarf planets, and hundreds of millions of small bodies of the solar system and Halley's Comet.

The eight planets in the solar system all orbit in a near-circular orbit in about the same plane, orbiting the Sun in the same direction. With the exception of Venus, the other planets have the same direction of rotation and revolution. Most comets orbit in the same direction around the Sun, most of them have elliptical orbits, and generally have a long orbital period.

The radius of the solar system is about 100,000 au, so the diameter of the solar system is about 200,000 au.

The solar system is a system of celestial bodies centered on the sun and bound by the sun's gravitational pull, including the sun, planets and their moons, dwarf planets, asteroids, comets and interplanetary matter. The solar system is located about 10,000 light-years from the center of the Milky Way (the Sun is just one of the stars in the Milky Way, which is about 100 billion to 400 billion).

The solar system includes the Sun, 8 planets, nearly 500 moons, and at least 1.2 million asteroids, as well as some dwarf planets and comets. If Neptune's orbit were used as the boundary of the solar system, the diameter of the solar system would be 60 astronomical units, or about 9 billion kilometers.

If bounded by the heliosphere, the Sun can be up to 100 AU (at its thinnest) from the boundary of the solar system, and if it is bounded by the Oort cloud, the diameter of the solar system may be 200,000 AU.

The diameter of the solar system is more than 20 billion kilometers, or 120 astronomical units. You can't even use it for a day, so how can you still use the concept of "light years"?

The diameter of the solar system is at least 2 light-years.

We know that it takes 8 minutes for the Earth to travel from the Sun, and the distance between Pluto, the planet we are familiar with, takes 5 hours, which is about 40 times the distance from the Earth to the Sun. What is the concept, if the distance from the earth to the sun is as early as the distance from you sitting on the couch to the door, it is 4 meters. Pluto, then, is 160 meters away.

Some people say that the solar system is so big that it needs to run so far away, but in fact, it is still far more than that!

At a greater distance from the Sun, there are the Kuiper Belts, which are essentially 25 times more extended from Pluto. That is, the Kuiper Belt of the Solar System is more extensive, or if you sit on a couch, the distance from the Earth to the Sun is like 4 meters to the door. Then the Kuiper Belt is about 4,000 meters away, 4 kilometers, spanning a few blocks, is the edge of the Kuiper Belt.

If the solar system is that big, you couldn't be more wrong!

At a greater distance, it still belongs to the category of the solar system, and at a distance of half a light year from the sun to a distance of 1 light year, there is the Solar System's Solar System Ultra Nebula, a light year as the name suggests, 1 light year is still the current speculation, some people say that the Ultra Nebula may exceed this distance.

To make another analogy, at home, the earth to the sun is like 4 meters, so the range of the solar system has a radius of 250 kilometers. It can be said that the scope of a province is covered.

The diameter of the solar system is about 30 billion kilometers. The Sun occupies the vast majority of mass in the solar system.

The diameter of the solar system is not a fixed value, it can vary depending on how it is defined and measured.

If Neptune is used as the boundary of the solar system, the diameter of the solar system is about 60 astronomical units, which is 9 billion kilometers, which is about 1 light year. If we take into account the orbits of comets (Oort clouds), the diameter of the solar system can reach 60,000-120,000 astronomical units, or trillions of selling kilometers, which is about a pure light-year.