What does Pluto mean by "ghost"?

Classification: education/study/examination >> study aid

Problem description:

What does Pluto mean by "ghost"?

Analysis:

"Ghost" means: in some superstitions or myths and legends, the places where people go after death are usually called the underworld and the underworld. Pluto is far from the sun, frozen, dark and lifeless, so scientists gave it such a name.