Planet Pluto :

Diameter : 3040 km
Moons : 1 Charon
Density : 2.06 g/cm cube
Average distance to the Sun : 5865.6 million km
Time to orbit the sun : 247.70 years
This planet is fastest , the smallest , the darkest, the coldest and arguably the strangest. It follows the most elongated and tilted orbit in the solar system. Its moon , charon is nearly half its size appears like a bi – planet. NASA using a new infra – red telescope has learned that Pluto is shrouded in frozen nitrogen – not methane as once thought Nitrogen makes 78% of the year.