Entity: PLANET
A planet is a large celestial body that orbits a star, such as the sun, and reflects light. Historically, planets were considered 'wanderers' in the sky by ancient astronomers.
PLANET
Etymology
The word 'planet' originates from the Greek word 'plánēs,' meaning 'wanderer.' Originally, it included the moon and sun but not the Earth.
Definition
A planet is a large celestial body that orbits a star, such as the sun, and reflects light. It is one of the eight heavenly bodies in the solar system.
Historical Context
Historically, planets were known as 'wanderers' in the sky by ancient astronomers. The modern scientific sense of a planet as a 'world that orbits a star' emerged in the 17th century.
Cultural Significance
Planets have played a significant role in various cultures and mythologies, often associated with gods and cosmic forces.
Related Concepts
Other related concepts include moons, stars, asteroids, and dwarf planets.
See Also
A celestial body that orbits a star and reflects light, historically considered 'wanderers' in the sky.