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Plutoid: The New Name for Solar System Objects Like Pluto
In 2006, the International Astronomical Union (IAU) made a controversial decision to reclassify Pluto as a "dwarf planet." This decision sparked a debate among astronomers and the general public about what constitutes a planet. In response to this debate, the IAU created a new classification of celestial bodies called "plutoids." In this article, we will explore what plutoids are, why they were created, and what impact they have on our understanding of the solar system.
What Are Plutoids?
Plutoids are celestial bodies that share similar characteristics with Pluto. According to the IAU, a plutoid is defined as "a dwarf planet that orbits beyond Neptune and has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape." In simpler terms, plutoids are small, round objects that orbit the sun beyond Neptune.
Why Were Plutoids Created?
The creation of plutoids was a direct response to the controversy surrounding Pluto's reclassification. The IAU wanted to create a new classification of celestial bodies that would include Pluto while also acknowledging its unique characteristics. By creating the category of plutoids, the IAU was able to recognize Pluto as a distinct type of celestial body while also maintaining its new classification as a "dwarf planet."
What Impact Do Plutoids Have on Our Understanding of the Solar System?
The creation of plutoids has had a significant impact on our understanding of the solar system. Prior to their creation, there was no clear definition for what constituted a planet. The IAU's decision to create the category of plutoids helped to clarify this definition and provide a framework for classifying other celestial bodies.
In addition, the discovery of other plutoids has expanded our knowledge of the outer solar system. Since the creation of the category, several other celestial bodies have been classified as plutoids, including Eris, Haumea, and Makemake. These discoveries have helped to deepen our understanding of the diversity of objects in the outer solar system and how they formed.
Conclusion
The creation of plutoids was a significant development in our understanding of the solar system. By creating a new classification of celestial bodies that includes Pluto and other similar objects, the IAU was able to clarify the definition of a planet and provide a framework for classifying other objects in the solar system. The discovery of other plutoids has also expanded our knowledge of the outer solar system and deepened our understanding of its formation.
FAQs
1. Is Pluto still considered a planet?
No, Pluto is now classified as a "dwarf planet."
2. How many plutoids have been discovered?
As of 2021, five plutoids have been officially recognized by the IAU.
3. Why was Pluto reclassified as a dwarf planet?
Pluto was reclassified as a dwarf planet because it did not meet the criteria for being a full-fledged planet.
4. What is the significance of the discovery of other plutoids?
The discovery of other plutoids has expanded our knowledge of the outer solar system and deepened our understanding of its formation.
5. Are there any other categories of celestial bodies besides planets and plutoids?
Yes, there are several other categories, including asteroids, comets, and moons.
This abstract is presented as an informational news item only and has not been reviewed by a subject matter professional. This abstract should not be considered medical advice. This abstract might have been generated by an artificial intelligence program. See TOS for details.