A planet is a celestial body that orbits around a star and has enough mass for its gravity to shape it into a nearly round shape. Planets do not produce their own light but instead reflect the light of the star they orbit.
1. What is the definition of a planet?
A planet is a celestial body that orbits around a star and has enough mass for its gravity to shape it into a nearly round shape.
2. List three characteristics of planets.
3. Name the eight planets in our solar system and describe one unique feature of each.
4. What is the key characteristic that distinguishes a planet from other celestial bodies?
A planet must have cleared its neighboring region of other debris and celestial bodies.