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Pluto, kicked out by humans a few years ago. Nine planets, because scientists have discovered that Pluto's orbit does not revolve entirely around the sunIt is influenced by another celestial body, which is a little off, but it orbits the Sun as a whole. So it was thought that he should not be considered a satellite of the sun.
Pluto should be a planet, because it is not found that Pluto has a main star around it except the sun, if Pluto orbits another planet, he is not a planet, he is counted as a planet's satellite, but from the current development, it is only orbiting around the sun There is a certain deviation, but it is not orbiting around the sunHe should be considered a relatively special state, not a complete planet, but 90% of the time it is a planet, and the celestial body that affects his orbit only affects. <>
In fact, it is not particularly appropriate for us to make too many definitions of Pluto, because the definitions we make are meaningless, we just make certain corrections to our civilization system and the cognition of the universe, but it will not have any impact on Pluto itself, or in other words, we still do not recognize him as a star line, he is in those two, he will not change in any way because of people's thoughts, so ** so many problems with Pluto,In fact, it is not special, the key is that people's understanding of the eight planets is only on the surface. <>
The solar system is not big, it is not small, because with our probes, we basically have a basic understanding of the 8 major planets, photographed some **, and got some data, but the real manned exploration has not yet been realized, not to mention the world outside the solar system, the Pluto we have discovered now, he is not completely orbiting the sun, so he will not be recognized as a punishment, but one day in the future, human beings may also find that the other planets of the eight planets are not completely orbiting the sun, It's just that this degree is very small, and it can't happen now with our level of technology.
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Pluto was discovered in 1930 and is considered the ninth largest planet and was once the farthest planet from the Sun in the Solar System. (However, because its special elliptical orbit cannot cover Neptune's orbit, its orbit will partially coincide with Neptune's.)
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Of course, it is a planet, it does not emit light by itself, revolves around the sun, has a fixed orbit, basically a plane, there are deviations, the reason why the solar system becomes 8 planets, is because some scientists believe that its orbit overlaps with the other two planets. So a decision was made in the absence of a lot of scientists. That's why it's controversial.
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Planet. Because Pluto revolves around the Sun and is a satellite of the Sun, Pluto is a planet.
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Pluto is indeed a planet, but it is not the ninth planet, it is just a dwarf planet.
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Pluto's mass does not belong to the planets.
In 1930, the American astronomer Tombo discovered Pluto, but miscalculated the mass at that time, thinking that Pluto was larger than the Earth, so he named it a large planet.
Since the day it was discovered more than 80 years ago, Pluto has been associated with the word "controversy."
One is because the process of its discovery is based on a false theory;
The second is that because of the wrong estimation of its mass, it was mistakenly included in the ranks of large planets.
However, new astronomical discoveries continue to call into question the traditional notion of the "Nine Planets". Astronomers have discovered some differences between Pluto and other planets in the solar system. Pluto is in orbit beyond Neptune, in the Kuiper Belt on the outer part of the solar system, an area that has long been the birthplace of the solar system's asteroids and comets.
It used to be. Even our high school geography teacher summed up the distance between the nine planets and the sun in this way: water, gold, earth, fire, wood, earth, heaven, sea, and underworld.
Pluto is only one-third the size of the Moon, and weighs 470 times lighter than Earth, in addition to the discovery of Eris in 2015, the planet is about 27 heavier than Pluto, so in 2016, IAU (the abbreviation of the International Astronomical Union) officially defined the concept of planets, excluding Pluto from the planetary range and classifying it as a dwarf planet (Pluto-like body).
Speaking of Cordyceps, I believe many people are familiar with it, this is a very expensive tonic, the quantity is very rare, **Very expensive, many people wonder whether Cordyceps sinensis is a cordyceps or a grass?
I don't know if the universe is finite, but if the universe is infinite, then the night sky should be bright, not black. Because there are infinite stars in every direction, and although the rays of a star are faint, the rays of an infinite number of stars add up to be brighter than the sun. >>>More
From a scientific point of view, we start with the first life on Earth, and the first life on Earth should be infinitely close to the way bacteria or viruses reproduce.