Pluto
Pluto is the farthest from the sun. It is also the ninth planet from the sun. And is the smallest planet-less then half the size of Mercury. Another reason Pluto is unusual is that its moon, Charon is more than half its size! In fact, Charon is the largest satellite relative to its planet in the solar system. On average, Pluto's orbit is 5.9 billion kilometers (3 2/3 billion miles) away from the sun.
All the planets orbit the sun in a path shaped like flattened circle. Of the entire planet, Pluto has the flattest orbit. …
