Image Courtesy of Dewey Online.
Pluto or 134340 Pluto is the second largest dwarf planet in the solar system and it is the tenth largest body to be observed orbiting the Sun. Pluto was originally considered to be a planet, but is now considered to be a part of the Kuiper Belt. It is approximately one fifth the mass of the Earth’s moon and is smaller than the seven natural satellites of the Solar System. Pluto’s surface consists of ice and rock and has an orbit that takes 29 to 49 AU (4.3 to 7.3 billion km) from the Sun. “It is highly inclined with respect to the planets and as a result of this Pluto occasionally comes closer to the Sun than the planet Neptune.
Pluto’s atmosphere is a thin layer of nitrogen, carbon, methane, and carbon monoxide. The atmosphere when far enough away of the Sun freezes. When it gets close to the Sun again the frozen gases melt and cause an anti-greenhouse effect. This means that the temperature of Pluto gets much colder by about 10 kelvins.