Pluto the Dwarf Planet

In our solar system the number of planets are moving around the sun and each one is being different to each other in some or other ways. Their orbital and rotation period, the elements they are made up of, the Atmosphere, the distance from the sun, size, and appearance all are different from each other. Saturn has a beautiful ring, the earth has a life, the Jupiter has number of moons, some move around the sun clockwise some anticlockwise.

Pluto is the smallest planet, which was discovered in the solar system orbiting the Sun. It is even smaller than the moons of other planets. Now it is one of the three "Dwarf Planets" other two being Ceres and Eris. All you can find on Pluto is rocks and ice of ethane, methane, carbon dioxide, and nitrogen. Here are some more facts about Pluto:

• The Planet is discovered in 1930, which is the smallest and distant.
• You cannot see it with your naked eyes, telescope is required to the planet. And even with telescope you will only see the star like object in the sky. It looks yellowish-brown.
• The Atmosphere on the Pluto is very cold. When Pluto is away from the sun the atmosphere get frozen and when close the temperature gets increased and frozen methane, Nitrogen, Carbon dioxide melts away.
• The surface temperature of the planet is very cold between -235 and -210 degree C.
• The orbit of the Pluto is very different from any other planet in the solar system. It is far from the circular of other planets. Sometimes it also gets closer to the sun than the Neptune. This happens after every 288 years.
• Though the orbits of Neptune and Plato cross each other, these two planets cannot collide.
• The rotational period of Pluto is 6.5 days and orbital period very eccentric i.e. 90,613 days.
• The Diameter is 2340 km and the density is less than half of the earth.
• The distance of planet from the sun is 39.5 times the distance of earth to the sun.
• No spacecraft has been sent as yet, "New Horizon" by NASA has been launched to reach in 2015 although.
• Charon, Nix and Hydra are the moons of the planet. Charon is biggest and other two small. James W. Christy discovered Charon. Both Caron and Pluto are tidally locked to each other. They are always faced to each other.
• Before 2006 Pluto was considered as the ninth planet of the solar system but after discovery of similar objects nearby it is included in new category "Dwarf Planets". It has been numbered 134340.