After Pluto was discovered in 1930, astronomers began to speculate that the planet Neptune is just outside one of the many planets around the sun in it. Over the past few decades, many scholars have conducted research on this view and amended, and this contact area outside the Dutch astronomer Gerard Kuiper’s name is most closely with Neptune, and now we are still this piece of the region called “Kuiper belt”.

So what is so special about it with the Kuiper?

Kuiper Belt is located beyond the orbit of Neptune, the distance to the sun is about 55 times that of Earth to the sun. Astronomers predict Kuiper belt objects diameter of more than 100 km may be as many as 100,000, more than 2,000 diameters ranging from one thousand meters to several kilometers. The most famous Kuiper Belt objects have Pluto, Haumea and Makemake. In addition, the astronomers believe that Neptune’s satellite Triton was captured first, a Kuiper Belt objects. However, they are less than 1/10 of the total mass of the Earth. Astronomers also suggest that these celestial bodies like planets, is composed of stars, but because of the small number of stars far away from the sun, so their size is much smaller than the planet.

The edge of the solar system’s Kuiper Belt is it? Not. According to current findings, the solar system’s most distant Oort Cloud, there are 50,000 to 100,000 astronomical units from the sun, most far more than a light year. There are many comets in the Oort Cloud. We can say that these substances are left over after five billion years ago to form the sun and planets. Scientists believe that due to the gravitational interactions between the planets in the Solar System, the Kuiper Belt objects many catapulted into the farthest end of the solar system’s gravitational pull, the formation of the distant Oort Cloud.


Kuiper belt and distributed between Mars and Jupiter asteroid belt somewhat similar, are small solar system body polymerization zone, but these are small bodies of the solar system initial residual material. Asteroid belt objects difference is mainly composed of rock and metal, while the main Kuiper belt objects low boiling point mixture is frozen, the main ingredient is water, ammonia and methane. Most comets of the solar system comes from here.

Since 2008, led by the University of Hawaii Institute for Astronomy “Pan Star Program” (Panoramic Survey Telescope and Rapid Response System) began to regularly scan the sky for quick search of various objects, including asteroids that could threaten Earth. By-product of the program is to draw a detailed star chart a faint object in the sky, including the Kuiper Belt objects. “Pan-Star Program” Observatory Dr. Ken Chambers said, ” ‘Pan-Star Program’ new findings from a number of near-Earth objects within the solar system and the stars Lonely Planet among KBOs to; it also marked the three-dimensional form of dust galaxy, discovered new stellar stream, the early universe exploding stars and distant quasars. “

So why scientists study the Kuiper belt it? Because scientists believe that the Kuiper belt to keep the solar system ever look. Kuiper Belt objects is considered to be residue left behind when the solar system, will help scientists understand the situation at the beginning of planet formation. Scientists predict that there should Kuiper belt 1 kilometer radius of several kilometers to objects, these objects are planets formed an important part of the process. 2019, Japanese astronomers for the first time in the Kuiper Belt discovered a radius of 1.3 kilometers celestial bodies, to fill the planet during the “missing link” form. The results show that, kilometers-sized KBOs much more than previously thought. This finding provides evidence for a model of that object stars slowly at first it becomes the culmination of one thousand meters size, burst length and then polymerized into a planet.

In this paper, scientific checks by the Second High School Affiliated to Renmin University of China branch level teachers king and Italy.

Xinhua Popular Science Division

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