Pluto is the 1st of the classified dwarf planets. It's in the Kuiper Belt. It was the 9th planet but for a short period, it was the 8th planet. It's orbit is 240+ years. It's day is the equivalent to 1 week on Earth (7 days). It's look is unknown for now, until 2015, when New Horizons passes by and takes a picture of it. Like other members of the Kuiper belt, Pluto is composed primarily of rock and ice and is relatively small: approximately a fifth the mass of the Earth's moon and a third its volume. It has a highly eccentric and highly inclined orbit.
- This planet's name is also the name of a Mickey Mouse character, Pluto (Mickey's dog)
- The word Pluto means "Devil".
- It is the smallest planet in them solar system.