It is the third planet in the solar system, a vibrant and beautiful planet with a unique blue appearance and abundant natural resources. With a diameter of approximately 12742 kilometers, it has the only known environment in the solar system with widespread liquid water. Most of these water resources are concentrated in the oceans on Earth, forming the well-known 'Blue Planet'. The atmosphere is mainly composed of nitrogen and oxygen, suitable for biological respiration. It is the home of humanity. Human civilization has developed a rich and diverse culture, technology, and social structure on Earth. Earth is the only known planet in the universe capable of nurturing and sustaining life.

Earth (English name: Earth; Latin: Terra) is the third planet from the sun and the only celestial body known to harbor and support life. About 29.2 percent of the Earth's surface is land, consisting of continents and islands. The remaining 70.8 per cent is covered by water, mostly by oceans, bays and other brackish bodies of water, but also by lakes, glaciers, rivers and other freshwater bodies, most notably glaciers, which together form the hydrosphere.