Pluto

Poor Pluto

             Pluto, formal designation 134340 Pluto, is the second-largest known dwarf planet in the Solar System (after Eris) and the tenth-largest body observed directly orbiting the Sun. Originally classified as a planet, Pluto is now considered the largest member of a distinct population known ask the Kuiper belt.

  

A Discover of Pluto

        Discovered in 1930 Pluto was long considered our solar system's ninth planet. But after the discovery of similar intriguing worlds deeper in the distant Kuiper Belt, icy Pluto was reclassified as a dwarf planet. This new class of worlds may offer some of the best evidence about the origins our solar system..

Who described  Pluto ? 

Venetia Burney

                                         

Born in 11 July 1918  

Died in 30April 2009

Age 90

        The name Pluto was proposed by Venetia Burney (later Venetia Phair), an eleven-year-old schoolgirl in Oxford, England. Venetia was interested in classical mythology as well as astronomy, and considered the name, that of the Roman god of the underworld,The object was officially named on March 24, 1930.Each member of the Lowell Observatory was allowed to vote on a short-list of three: Minerva, Cronus and Pluto. Pluto received every vote.The name was announced on May 1, 1930. Upon the announcement, Madan gave Venetia five pounds as a reward

Atmostsphere of Pluto

       Pluto's atmosphere consists of a thin envelope of nitrogen, methane, and carbon monoxide gases, which are derived from the ices of these substances on its surface. Its surface pressure ranges from 6.5 to 24 μbar. Pluto's elongated orbit is predicted to have a major effect on its atmosphere: as Pluto moves away from the Sun, its atmosphere should gradually freeze out, and fall to the ground. When Pluto is closer to the Sun, the temperature of Pluto's solid surfaceincreases, causing the ices to sublimate into gas.

Pluto Out Off  Planet !

         Pluto has been voted off the island. The distant, ice-covered world is no longer a true planet, according to a new definition of the term voted on by scientists today."Whoa! Pluto's dead," said astronomer Mike Brown, of the California Institute of Technology in Pasadena, as he watched a Webcast of the vote. "There are finally, officially, eight planets in the solar system."

Credit :  Wikipidia