Dwarf Planet REBORN
Pluto, the dwarf planet, has got very interesting history. We all know that Pluto is not a planet anymore. Pluto is named after the Greek god of the underworld. This is a later name for the more well known Hades and was proposed by Venetia Burney an eleven year old schoolgirl from Oxford, England. She was awarded 5$ for giving the name.
No one can bound me :Pluto’s origin and identity had long puzzled astronomers. One early hypothesis was that Pluto was an escaped moon of Neptune, knocked out of orbit by its largest current moon, Triton. This idea was eventually rejected after dynamical studies showed it to be impossible because Pluto never approaches Neptune in its orbit.
Change of name
Pluto was reclassified from a planet to a dwarf planet in 2006. This is when the IAU formalized the definition of a planet as “A planet is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighborhood around its orbit.” Although it is called dwarf planet but Pluto is the biggest dwarf planet.
Why we are discussing Pluto now?
Well scientists have found something interesting which will rise Pluto from coffin. Scientists have found evidence of Earth-like snow and ice features on Pluto. This may sound interesting and scientist have proved that there is earth like ICE on the dwarf planet. But the ice found on the planet is temporary . that means Pluto sometimes has an atmosphere. When Pluto elliptical orbit takes it closer to the Sun, its surface ice thaws and forms a thin atmosphere primarily of nitrogen which slowly escapes the planet. It also has a methane haze that over about 161 kilometers above the surface. The methane is dissociated by sunlight into hydrocarbons that fall to the surface and coat the ice with a dark covering. When Pluto travels away from the Sun the atmosphere then freezes back to its solid state.
What is dwarf planet,Pluto?
As we know that earth is 71 % of Earth surface is covered with water and the rest is land. Similar to that fact Pluto(dwarf planet) is one third water. This is in the form of water ice which is more than 3 times as much water as in all the Earth’s oceans, the remaining two thirds are rock. Pluto’s surface is covered with ices, and has several mountain ranges, light and dark regions, and a scattering of craters.
Pluto is not the only planet which have ice there may be millions and billions of planet out there. We just have to focus and explore the universe for the sake of curiosity !
FACT: sun light takes 5 hours to reach the dwarf planet and 8 minutes 20 seconds to reach Earth.
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