Earth is our home planet, the third from the Sun in the solar system. It is unique because it supports life, with air, water, and land that sustain millions of species. About 71% of Earth is covered with water, while the rest is land with mountains, plains, and forests. It has one natural satellite, the Moon, which affects tides. Earth rotates on its axis, giving us day and night, and revolves around the Sun, creating seasons. With its atmosphere protecting life and rich resources, Earth is often called the “Blue Planet” and is the only known planet with living beings.