I've heard that much of astronomy terms are named after Greek Mythology. Then, does "Pluto" a Greek name as well?
Native speaker’s answer
Rebecca
That's right! "Pluto" comes from an ancient Greek word. It's actually the name of the Greek and Roman god of the underworld. Ex: An eleven-year-old girl named the planet Pluto. Ex: Pluto is the farthest planet from the sun.