Why is Earth called the Blue Planet?

Earth is called the Blue Planet because about 70% of its surface is covered with water, which gives it a blue appearance from space.

Earth is often referred to as the "Blue Planet" due to its abundant water bodies, including oceans, lakes, and rivers. When viewed from space, Earth appears predominantly blue because water absorbs and reflects sunlight in a way that gives it a blue hue. The presence of water is one of the key factors that support life on Earth, making it unique in the solar system.