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NASA astronomers explain why the forgotten Pluto is a planet



  Pluto

NASA's New Horizon spacecraft flew past Pluto, once known as the world's smallest planet, in July 2015, and the encounter created history. In 2006, the International Astronomical Union (IAU) announced an announcement to redefine the word "planet". The redefinition eliminated many objects that included Pluto. Scientists now think that the decision was incorrect and a more useful and logical definition of the word "planet" would encompass many more worlds.

As said by the planetary scientists, they spend a long time researching and exploring the objects orbiting the stars, and they use the word "planet" to define any world that has these properties. If you observe a world like Pluto with many similar features like nitrogen glaciers, icy mountains, and blue skies with smog layers, scientists can not stop calling for "planets" to describe and / or compare it to the other known planet.

Scientists even use the word "planet" to describe the largest "moons" in our solar system. The word "moon" indicates that they revolve around the other worlds that are themselves turning our star. However, if another world like that of Saturn ̵

1; is discussed Titans that is greater than that of Mercury and has mountains, rivers, clouds, lakes and dunes that scientists call them in their meetings as "Planet" [19659005GrundsätzlichsinddiePlanetenweltendiejenigendiegroßgenugsindumsichdurchihreSchwerkraftindieFormeinesBalleszuziehenUntereinerfestenGrößewerdendieWeltenklumpigdadieStärkevonFelsenundEisdieRundungdurchihreSchwerkraftverhindertMitdieserMethodeunterscheidendieWissenschaftlerdiePlanetenunddieNicht-PlanetenundmitdergleichenTechnikwurdeUltimaThulenichteinmalvordemEintreffenderRaumsondeNewHorizonsalsPlanetangesehen[19659003] However, the word "planet" had to be redefined due to two exciting insights into the universe. First, there are a large number of planets outside the solar system known as "exoplanets" that orbit nearly all the stars. Second, there is a vast amount of tiny icy objects orbiting the largest star of the solar system in the Pluto region, in front of the belt of "terrestrial planets", "icy giants" and "gas giants".

These findings forced us to ask what objects found in the orbit of the other stars could be called planets, some of which are almost stars themselves and are known as "dwarf stars" and it makes sense somewhere, tiny ones To bring ice worlds like Pluto into another subcategory called "dwarf planet".


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