Neptune the god of sea,the brother of Jupiter. The eighth and farthest planet from the Sun.After the discovery of Uranus, it was noticed that its orbit was not as it should be in accordance with Newton's laws.It was therefore predicted that another more distant planet must be perturbing Uranus' orbit. Neptune was first observed by Galle and d'Arrest on 1846 Sept 23.Neptune is the 4th largest planet in the solar system.Or we can say a most gorgeous planet in solar system.It is 4.5 billion km (2.8 billion miles) far from our sun.From the earth it just looks like a star.Its magnetic Field roughly 27 times more powerful than Earth's.Neptune orbit our sun once in 165 Earth years.Like the other gas giants, Neptune does not have a solid surface. Neptune is mostly made of a very thick, very hot combination of water (H2O), ammonia (NH3), and methane (CH4) over a possible heavier, approximately Earth-sized, solid core.The temperature at its surface is about 38 K (−235.2 °C).Neptune has thirteen moons, and their names are the following: Triton, Proteus, Nereid, Naiad, Thalassa, Despina, Galatea, Larissa, Halimede, Sao, Laomedeia, Psamathe, and Neso.Among them Triton is the largest & discovered by William Lassell on October 10, 1846, just 17 days after the discovery of Neptune itself.
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