Final answer:
Planets and moons in our solar system are named using the Greek root meaning and are often derived from Greek and Roman mythology.
Step-by-step explanation:
The spheres on Earth named using the Greek root meaning are primarily found in the field of Astronomy.
Planets and moons in our solar system are often named after gods and heroes in Greek and Roman mythology.
For example, Jupiter's moon Io has volcanic features named after gods of fire and thunder from various mythologies.