The Earth is a big place, really big, and on it are mountains, deserts, rivers, and swamps.

Some of those points are higher than others, some of the deserts are drier than others, and some of the rivers are longer than others.

Learn more about the Earth's most extreme... others and some of the rivers are longer than others.

Learn more about the Earth's most extreme points on this episode of Everything Everywhere

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If you view the Earth from space it looks like a perfect sphere.

In fact the only reason the Earth looks so irregular

is that we happen to be living on the surface

and we are very small in comparison.

However, if we were to shrink the Earth down to the size of a billiard ball,

it would actually be smoother of a billiard ball, it would actually

be smoother than a billiard ball.

You may have heard that the earth is not actually a sphere, but is technically what is called

an oblate spheroid, and this is true. The diameter of the Earth from North Pole to South Pole is 12,713.6

kilometers. The diameter of the equator is actually slightly more because the earth is spinning which causes it to

bulge at the equator slightly.

The diameter of the earth at the equator is 12,756.2 kilometers, which is 46.2 kilometers more than it is if you measure it at the poles. The difference is so

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