When Pluto was reclassified in from a planet to a dwarf planet, there was widespread outrage on behalf of the demoted planet. As the textbooks were. Pluto is a dwarf planet that lies in the Kuiper Belt. It's an area full of icy bodies and other dwarf planets at the edge of our solar system. Because Pluto is the. Once Pluto was found, its faintness and lack of a resolvable disc cast doubt on the idea that it was Lowell's Planet X.
A new paper argues that the reason given for Pluto's demotion isn't valid. Pluto, once considered the ninth and most distant planet from the sun, is now the largest known dwarf planet in the solar system. It is also one of. Astronomers define a planet as an object that orbits the sun (but not another object), is round (or nearly so) and has cleared the area around its.
When the IAU officially defined the word “planet” for the first time, Pluto simply didn't fit. To keep its planetary status along with Earth, Saturn. Planetary scientist Philip Metzger reviewed scientific literature from the past years and found the reason Pluto lost its planet status in The International Astronomical Union (IAU) downgraded the status of Pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to. But really, the endless effort to restore Pluto's planetary status and relegislate the definition of a “planet” is getting tedious. Time to settle this.