Monday, November 25, 2013

Pluto & Sedna.....

                                                               Pluto
                                                                   Sedna

Pluto & Sedna, two dwarf planets in a very far away from our sun.In ancient Greek religion and myth, Pluto was a name for the ruler of the underworld, the god was also known as Hades, the name of the underworld itself,& the brother of Jupiter(Zeus). Sedna is a very significant figure in Inuit mythology. There are a number of different versions of the myth of Sedna.Sedna is the Inuit Goddess of the Sea.Pluto's surface is one of the coldest places in the solar system at roughly minus 375 degrees F (minus 225 degrees C).It was 1st discovered in 1930.Its about 4.4–7.4 billion km far from the Sun.Pluto was originally classified as the ninth planet from the Sun.Sedna,on 15 March 2004, astronomers from Caltech, Gemini Observatory, and Yale University announced the discovery of the coldest, most distant object known to orbit the sun. The object was found at a distance 90 times greater than that from the sun to the earth -- about 3 times further than Pluto, the most distant known planet.Its about 90 AU (1 AU is an Astronomical Unit, the distance between the earth and the Sun)  far from our sun.Sedna's surface composition is similar to that of some other trans-Neptunian objects, being largely a mixture of water, methane and nitrogen ices with tholins. Its surface is one of the reddest in the Solar System.This two dwarf planets are the objects of Kuiper belt ...

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