O planet Earth, in fact, it's not exactly round, meaning it doesn't form a perfect sphere. It is more correct to say that it has a format geoid, closer to the shape of an ellipse, which is explained by the flattening of the planet at the poles due to the translation movement.
But why is the Earth round?
The Earth, like the other planets in the universe, has this rounded shape because of the action of the Gravity force. This is the same force that keeps us on the ground, as it “pulls” everything towards the center of the planet.
The greater the mass of a planet, the greater the force of gravity. Thus, small celestial bodies (such as meteors and asteroids) are not round, as their gravity is practically nil.
Thanks to the action of this force that pulls everything to its center, the planets (including ours) become round because this is the only one a shape in which all points on the surface are at the same distance from the center, that is, the spherical shape is the most stable possible.
in short: during the emergence of the universe, the particles that make up matter gradually joined together. As they grew larger, these masses acquired their own force of gravity, which gradually shaped the surface of these planets until they became more rounded.
By Rodolfo Alves Pena
Graduated in Geography
