Planet

A planet is a celestial body that orbits around a star, is spherical in shape due to its gravitational forces, and has cleared its neighboring region of other debris. In our solar system, there are eight recognized planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. These planets vary in size, composition, and distance from the sun.

Characteristics of Planets:

• Orbit: Planets orbit around a star in a predictable path due to gravitational forces.
• Spherical Shape: Planets are rounded due to the gravitational forces acting on their mass.
• Cleared Orbit: Planets have cleared their orbital path of other debris and are the dominant gravitational force in their orbit.
• Size and Composition: Planets vary in size and composition, some being rocky like Earth and Mars, while others are gas giants like Jupiter and Saturn.

Study Guide:

1. What is the definition of a planet?
2. List the eight recognized planets in our solar system.
3. Explain the characteristics of planets.
4. Compare and contrast the rocky planets with the gas giants.
5. Why is it important for a planet to have cleared its orbital path?

Studying planets can be a fascinating journey into the wonders of our solar system. Understanding their characteristics, composition, and unique features can open up a world of exploration and discovery.