Pluto Planet: Everything You Need To Know About Pluto Planet

Pluto Planet: Everything You Need To Know About Pluto Planet
Pluto Planet: Everything You Need To Know About Pluto Planet

Why is Pluto no longer a planet?

Pluto was demoted and reclassified to dwarf planet, mostly due to the fact that it lacks an atmosphere, making it technically a couple hundred years old. 

Pluto Planet

Pluto has been widely studied as a planet, and there is now strong evidence it formed at the same time as the rest of the solar system. It is also moving further away from the sun, which is thought to be due to its tail. Of all dwarf planets, Pluto is the closest and most similar in size to the Earth.

Pluto is approximately 690 miles (1,000 kilometers) in diameter and has an orbit that takes it about 3.24 billion miles (5.5 billion to kilometers) from the sun. 

This is the closest known dwarf planet object. As of September 2020, researchers estimate that Pluto is moving around 1.3 miles (2.8 kilometers) every second.

Pluto’s surface is composed of metallic objects including gold, platinum, and iron. These metals were thought to be formed during the accretion stage, after the solar system was formed, but recent studies show that the area of the surface is unusually uniform. 

Why is Pluto no longer a planet

This is because pieces of Pluto that were once ocean-like are no longer surrounded by water. This suggests that the surface was previously made of ice and was removed by a large impact.

This is one of the bridges of gas and particles from the sun to the Kuiper Belt, and its multi-walled structure can transport objects from the outer solar system to the inner solar system. 

The Kuiper Belt can be studied by using the two Transit Methodologies. Such studies probe the solar system with a multitude of observations from the ground, space missions, and spacecraft. One such study discovered the presence of carbon monoxide, which only appears in central regions of dwarf planets. 

This effect is not present on many of the dwarf planets observed with ground based telescopes.

The Outer Solar System Origins Survey (OSSOS), located at ESO’s La Silla Observatory in Chile, also ascertains the density and composition of objects in the outer solar system. 

Objects that pass between multiple techniques are then categorised based on the type of medium they are in (i.e. ice/rock, binary system, etc.).

OSSOS explains the detection of various ices and rocks in the outer solar system, the mass distribution of objects in space, and the presence of water on various bodies in the Kuiper Belt.

A paper published in 2018 describing these latest discoveries discusses that another effect of Pluto’s unusual classification is that recently discovered objects in other systems have been overlooked.

“Pluto is one of several so-called New ’5 planets.”

While Pluto was a planet, its status was changed due to two factors: firstly, owing to the involvement of several members from the Clyde Tombaugh family in the discovery of the dwarf planet. Secondly, a community of astronomers called the International Astronomical Union (IAU) classified it an “asteroid”.

“As per the IAU definition, a planet is a re-entrant within the solar system. In contrast, an asteroid is an re-entry body that enters the solar system from another celestial body, like the Moon.”

The IAU did not discuss the reasons behind Pluto’s demotion from a planet to an asteroid, and there is no official word on the reasons why it was demoted. 

But it probably has to do with geology more than anything else. In 2012, the International Research Institute (IRI) and the Association of Universities for Research in Astronomy (AURA) came up with a list of five more planets that were initially classified as planets by the IAU. 

But then, as noted, NGC 6526, a dwarf planet smaller than Pluto, was classified as a planet after being discovered by Terry Brown, who was later persuaded by his wife Jeannette Walls to give up the idea of giving it a permanent place in the solar system. It was soon demoted to a minor planet too.

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This event marked the beginning of the Kuiper Belt reclassification movement, a movement calling for the discovery of additional, previously unknown objects in the outer solar system. 

This movement has mainly focused on the search for an icy body that could be a candidate for a host planet, resulting in the discovery of several previously unrecognized bodies in recent years, including Sedna and 2012 UB313, which were both designated as planet-like bodies in 2016.

“ I believe it is possible to have a measure of planetary anarchism.

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