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Pluto IS NOT a planet - by definition.
That's a difficult question to answer, just because of how it's phrased. It is a common misconception that Pluto is no longer considered a planet. This idea is silly, though. Pluto is very obviously a planet. It is, however, considered a minor planet, rather than a major one, because it does not match defining qualifications to be a major planet. The reason it was not originally classified as a minor planet is that technology simply wasn't sharp enough to give us a good look at it. Pluto remained something of an enigma, with its highly elliptical orbit and elusive features. We just didn't know how to classify Pluto. As technology has progressed, we have been able to identify that Pluto is just too small to be considered a major planet. It is instead considered to be a dwarf planet, a category not even recognized at the time of Pluto's discovery. If we were to consider Pluto a major planet, we would also have to consider Ceres, Eris, and Makemake major planets. To synopsize your answer, no, there is not enough evidence to support the idea that Pluto is not a planet. Mainstream science doesn't consider Pluto to not be a planet. Popular culture captured Pluto's changed classification and incorporated it into mythology.
In 2006 the IAU agreed that Pluto was a dwarf planet. Although, many people were against the idea of identifying Pluto as a dwarf planet.
All of the other planets were named after Roman gods. Venetia Phair came up with the idea because she thought that this planet should follow suit.
The reason that Pluto is a dwarf planet rather than a planet is mainly due to it's size, specifically, the fact that it has not cleared it's orbit of enough matter.
Pluto IS NOT a planet - by definition.
That's a difficult question to answer, just because of how it's phrased. It is a common misconception that Pluto is no longer considered a planet. This idea is silly, though. Pluto is very obviously a planet. It is, however, considered a minor planet, rather than a major one, because it does not match defining qualifications to be a major planet. The reason it was not originally classified as a minor planet is that technology simply wasn't sharp enough to give us a good look at it. Pluto remained something of an enigma, with its highly elliptical orbit and elusive features. We just didn't know how to classify Pluto. As technology has progressed, we have been able to identify that Pluto is just too small to be considered a major planet. It is instead considered to be a dwarf planet, a category not even recognized at the time of Pluto's discovery. If we were to consider Pluto a major planet, we would also have to consider Ceres, Eris, and Makemake major planets. To synopsize your answer, no, there is not enough evidence to support the idea that Pluto is not a planet. Mainstream science doesn't consider Pluto to not be a planet. Popular culture captured Pluto's changed classification and incorporated it into mythology.
In 2006 the IAU agreed that Pluto was a dwarf planet. Although, many people were against the idea of identifying Pluto as a dwarf planet.
All of the other planets were named after Roman gods. Venetia Phair came up with the idea because she thought that this planet should follow suit.
The reason that Pluto is a dwarf planet rather than a planet is mainly due to it's size, specifically, the fact that it has not cleared it's orbit of enough matter.
Actually, the idea that Pluto had about the same mass as Mars is outdated. It is now known that Pluto has less than 2% the mass of Mars, and therefore has less gravity.
The fact that Pluto has hydrostatic equilibrium (a roughly spherical shape caused by gravitational influence) as attested to via the Hubble images. One could argue that it is a double planet with Charon which also maintains hydrostatic equilibrium and is bigger than the dwarf planet Ceres. This reviewer happens to believe that the idea of a planet completely clearing it's orbit of debris as a prerequisite to be a planet is silly and in many cases involving lagrange points is impossible.
Some known Kuiper-belt objects are hundreds of kilometers across.
That could be Pluto with its mate, Charon.(Of course Pluto is only a "dwarf planet" now.)Alternate:Some people have argued that this holds true for Earth and Earth's Moon, although the idea has not caught on. Earth's Moon has by far the largest mass in proportion to its companion planet when compared with any other moon in the solar system.
Does Pluto have Moons?Pluto has three moons. Pluto is now reclassified as a dwarf planet and not the ninth planet in the solar system.Does Pluto have rings?Astronomers have no Idea. Pluto is so far away that it's impossible to get a clear view of Pluto from here on Earth.hope this helps.
I have like no idea.
Eris is named after the goddess Eris, a personification of strife and discord.