Because if you look at it from a satellite view, you can see a lot of blue-the sea.
We are called Earth. "Blue Planet" is a nickname for Earth, since our planet comprises primarily of water.
Earth is the "blue planet" because of the blue oceans. Oceans cover 75% of the Earth's surface.
Earth is known as the blue planet because of its extensive oceans that give it a predominantly blue appearance when viewed from space. The reflection of sunlight off the oceans contributes to its blueness.
The Earth is Blue or the bio planet. The Earth is known as Blue planet because most of its surface is covered with water.
Earth
Planet Earth is called the blue planet because when viewed from space, its oceans and atmosphere make it appear predominantly blue in color. The reflection of sunlight off the water gives Earth its distinct blue hue when seen from afar.
I think that the Earth looks blue from outer space by an astronomer's eye is because the Earth is 75% water and 25% land. Since water is blue and there is a great quantity of it on the Earth, you spot the blue area first.
planet Earth
blue planet
Mars ~ the red planet Earth~blue planet
Earth.
Earth. It looks blue from a distance