Is the earth round 30, is the earth round

The Earth is a sphere, but due to gravity, it is not a perfect sphere, and the equator bulges outwards to form a "spare tire" structure. In fact, the polar radius of the Earth is kilometers, while the radius of the equator is kilometers.

I thought the earth was round, and on most other issues, I had to rely on the theories of experts earlier, and I had fewer ways to test his conclusions. The vast majority of our knowledge is at this level. It does not rely on reasoning or experimentation, but on authority.

But if not, what else can be done? The breadth of knowledge is so vast that once it goes beyond its specialization, experts become ignorant. For most people, if they were to prove that the earth was round, they would not be willing to provide even the rather weak arguments I outlined above.

They start by saying, "Everybody knows that the earth is round." If you ask any more questions, you will be angry.

In a way, George Bernard Shaw was right, and this is a time of credulity. Part of the reason for this is that there is so much knowledge that we have to know today.

Why is the Earth round?

The earth is approximately elliptical, with the North Pole convex, the South Pole concave a little, and the other surfaces undulating!

Earth is one of the eight planets in the solar system, the third planet in order of near and far from the sun, and it is also the terrestrial planet with the largest diameter, mass and density in the solar system.

Yes, Columbus's circumnavigation of the globe confirmed the theory of the circle of the earth.

The earth is not round. After long-term precise measurements, scientists have found that the earth is not a regular sphere, but an irregular elliptical sphere with slightly flattened equators at the poles and slightly bulging equators. Earth is one of the eight planets in the solar system, the third planet in order of closest to the sun, and the terrestrial planet with the largest diameter, mass and density in the solar system.

The Earth is a sphere, but due to gravity, it is not a perfect sphere, and the equator bulges outwards to form a "spare tire" structure. In fact, the polar radius of the Earth is kilometers, while the radius of the equator is kilometers.

The Earth is 100 million kilometers away from the Sun. The Earth rotates from west to east while revolving around the Sun. It is 4,04.6 billion years old, and it has a natural satellite, the Moon, which forms a celestial system, the Earth-Moon System.

It originated from the primordial solar nebula 4.6 billion years ago. The interior of the earth has a core, mantle, and crust structure, and the outside of the earth has a hydrosphere, atmosphere, and magnetic field. The Earth is the only celestial body in the universe where life is known to exist, and it is home to millions of living beings, including humans.