The Earth is not round, it is an irregular ellipsoidal sphere. The Earth originated from the solar nebula and is 4 to 4.6 billion years old so far.
We all know that the earth is a sphere, and besides revolving around the sun, it is constantly rotating itself. So is the earth round? Let’s give you a detailed introduction.
The Earth is not round, it is an irregular sphere. It can also be found that the earth is an irregular ellipsoid with a slightly flattened equatorial bulge at the poles, and the shape of the root pear is somewhat similar.
Earth is one of the eight planets of the solar system, ranked third in order of near and farther from the sun, and is also the largest terrestrial planet in the solar system in diameter, mass and density.
Earth 4.6 billion years ago originated in the primordial solar nebula, about 150 million kilometers away from the sun. The earth rotates from west to east and revolves around the sun at the same time. At present, it is 40 to 4.6 billion years old, and it has a natural satellite, the moon.
The surface area of the earth is 0.51 billion square kilometers, of which the 71% is the ocean and the 29% is the land. The earth is blue in space. In addition, on the map, we can see that the blue place represents the ocean and the green place is the land.
The earth is divided into two parts, the inner and the outer. The interior is composed of core, mantle and crust, and the exterior is composed of hydrosphere, atmosphere and magnetic field. The Earth is the only celestial body in the universe where life is known to exist, and it is the home of millions of organisms, including human beings.