How does a planet differ from a star?

Introduction: Planets and stars are celestial bodies that are found in space. Although they look similar, there are several differences between them.

What is a planet?
- A planet is a celestial body that orbits around a star.
- It is much smaller than a star and does not emit light of its own.
- It reflects the light of the star it is orbiting around.
- Planets are made up of rock and gas.

What is a star?
- A star is a celestial body that emits light of its own.
- It is much larger than a planet.
- Stars are made up of hot gas and plasma.
- They generate energy through nuclear fusion.

Differences between planets and stars:
1. Size: Stars are much larger than planets. For example, the Sun, which is a star, is about 109 times bigger than the Earth, which is a planet.

2. Light: Stars emit light of their own, while planets reflect the light of the star they are orbiting around.

3. Energy: Stars generate energy through nuclear fusion, while planets do not generate any energy.

4. Atmosphere: Planets have an atmosphere, while stars do not.

5. Orbits: Planets orbit around stars, while stars do not orbit anything.

The Earth in the Solar System (Overview):
- The Earth is a planet that is part of the Solar System.
- The Solar System is made up of the Sun, eight planets, and several other celestial bodies.
- The Earth orbits around the Sun.
- It is the third planet from the Sun and is the only planet known to have life.
- The Earth has an atmosphere that is made up of several gases, including oxygen, nitrogen, and carbon dioxide.
- The atmosphere protects the Earth from harmful radiation and keeps the temperature stable.
- The Earth is also unique in that it has liquid water on its surface, which is essential for life.