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We are all familiar with planets. For example, the sun X has eight planets, and the earth is one of them, but we are not familiar with dwarf planets. What kind of stars are dwarf planets? In fact, what celestial bodies are dwarf planets? You must first understand what a celestial planet is.

At the 26th International Astronomical Congress in 2006, astronomers confirmed that "planet" refers to a celestial body revolving around the sun, and its own gravity is enough to overcome its rigid physical force, make it spherical, and remove other objects near its orbit. According to this definition, a dwarf planet very similar to a planet is a planet that meets the first two conditions of a planet, but does not clear other celestial bodies near its orbit. Therefore, it is generally believed that dwarf planets are between planets and asteroids, orbiting stars, with enough mass to overcome the gravity of solids and reach a spherical shape, but they do not empty the celestial bodies in their orbits, but at the same time they are not satellites.

The most famous dwarf planet is Pluto. It was at the astronomical conference in 2006 that Pluto X and Xěng, which were originally ranked as nine planets, were downgraded to dwarf planets. Maybe many friends only knew about dwarf planets at that time. So are there other dwarf planets besides Pluto? In fact, there are more dwarf planets in the solar system than planets. Astronomers believe that there may be hundreds of dwarf planets in the Kuiper Belt outside the solar system, but most of them have not been observed by us.

Besides Pluto, the famous dwarf planets that have been discovered now include Venus, Venus, Venus, Sedna, quaoar and Ixions Whee. In addition, Ceres in the asteroid belt and Ka Rong, a satellite of Pluto, may be classified as dwarf planets, as well as Vesta, Athena of pallas and blade master, all of which are asteroids now and basically meet the definition of dwarf planets, and may be classified as dwarf planets in the future.

In fact, we can also think that dwarf planets are unformed planets. It has a lot of materials and information when the solar system was just formed, which is of great significance to the study of the formation of the solar system and planets. Moreover, there is usually a lot of water ice on dwarf planets, which may be used for planetary development in the future. Some planets outside the solar system are relatively easy to get rid of the gravity of the solar system because of their long distance. In the future, humans can use it as a springboard or vehicle for interstellar navigation or immigration.

If used as a vehicle, it can detonate a pollution-free nuclear bomb on its surface. With this reverse thrust, it can move outside the solar system. Humans can build underground cities under the surface of dwarf planets and provide energy through nuclear power generation. A dwarf planet-sized star can provide sufficient resources and energy for human interstellar migration for tens of thousands or even tens of millions of years.

What does Vesta mean by rushing to the sun? What is the date when Vesta rushed to the sun in 2022?

There are many astronomical phenomena in July and August every year, which has also become the best observation opportunity for many astronomy enthusiasts. According to the latest Xiong 'an and astronomical science experts, Vesta, the brightest asteroid in the sky, will hit the sun on August 23, 2022. At that time, the interested public in China can observe with binoculars or small astronomical telescopes. So what does Vesta mean by rushing to the sun? Besides the sun, planets, dwarfs and their satellites, there are many small bodies in the solar system, and asteroids are one of them. Xu Wen, a member of the Chinese Astronomical Society and deputy secretary-general of the Tianjin Astronomical Society, said that the orbits of most asteroids are between those of Mars and Jupiter, and the average radius of their orbits is close to 2.8 astronomical units (one astronomical unit is about 65.438+0.5 billion kilometers). Although the names of asteroids and planets are only one word apart, they are essentially different. "The planet is of great mass, almost spherical in shape and has its own independent orbit. Asteroids are much smaller in mass and irregular in shape, and many asteroids share an orbit with other' small partners'. " Xu Wen said. According to statistics, more than 6.5438+0.4 million asteroids have been discovered, and about 90% of the known asteroids are located in the asteroid belt. Vesta is one of the larger celestial bodies in the asteroid belt. Vesta, also known as asteroid 4, is the brightest asteroid in the sky. It was discovered on1March 29th, 807. It was named after Vesta in Roman mythology and translated into Vesta in Chinese. It is generally believed that it has a core-mantle-shell structure similar to that of the earth, and it is an ideal research object to understand the origin of terrestrial planets, and it is also one of the important goals of international deep space exploration. "When Vesta, the earth and the sun are roughly in a straight line, and the earth is among them, it is called Vesta rushing to the sun. At this time, from the perspective of the earth, Vesta reaches the brightest and is theoretically visible all night. " Xu Wen said. This Vesta solar craze occurred on August 23, 2022. "After the sun goes down, Vesta will rise from the southeast sky and rise to the sky at midnight, which is conducive to observation. During the rush to the sun, Vesta's brightness can reach 5.6. If you observe in the suburbs, you can see this brightness with the naked eye because there is less light pollution. If observed in the city, due to the serious light pollution, this brightness is difficult to see with the naked eye. It is best to use binoculars or small astronomical telescopes. Because the brightness of this asteroid is not high, the interested public must be patient when observing. " Xu Wen said. What does Vesta mean by rushing to the sun? The date when Vesta rushed to the sun in 2022 was announced. I hope the above content will be helpful to everyone.

What is the star's original name?

Profile of star singer:

Name: Star

Real name: Ko Eun Kim.

Birthday:1983 65438+1October 22nd.

Constellation: Libra

Occupation: singer

Height and weight: 163cm, 45kg.

Blood type: type A.

Education: East German Women's University

Hobbies: watching movies, listening to music, writing and reading comic books. Favorite food: cold noodles and fried rice cakes.

Favorite color: purple

Debut: 65438+February 32 (premiere of KBSMusicbank) (September 2002)

Birthplace: Xishan, Chungcheongnam-do

Motto: Be a person with a clear conscience.

Favorite diet: cold noodles, fried rice cakes

Favorite color: violet.

Quirk: Making faces (protruding lips, blinking)