**The Third Planet from the Sun: Earth**

Earth is the third planet from the Sun in our solar system. It is located between Venus and Mars. Let's explore some key facts about Earth and why it is considered the third planet from the Sun.

**1. Earth's Distance from the Sun:**
- The average distance from the Sun to Earth is about 93 million miles (150 million kilometers).
- This distance is known as an astronomical unit (AU), which is the average distance between the Earth and the Sun.
- Earth's distance from the Sun can vary slightly due to its elliptical orbit, but on average, it is the third planet from the Sun.

**2. Venus and Mars:**
- Venus is the second planet from the Sun, closer to the Sun than Earth.
- Mars is the fourth planet from the Sun, farther away from the Sun than Earth.

**3. Earth's Position in the Solar System:**
- The solar system consists of the Sun, eight planets, and various other celestial bodies.
- When counting the planets from the Sun, Earth is the third one.
- The order of the planets from the Sun is: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

**4. Characteristics of Earth:**
- Earth is the only known planet to support life.
- It has a diverse range of ecosystems, including land, water, and atmosphere, which provide a suitable environment for various forms of life to thrive.
- Earth has a moderate climate, with temperatures that allow for the existence of liquid water, a vital ingredient for life as we know it.

**Conclusion:**
In summary, Earth is the third planet from the Sun. Its average distance from the Sun places it between Venus, the second planet, and Mars, the fourth planet. Earth's unique characteristics and its position within our solar system make it a special planet that supports and sustains life.