Why is the sun round

Originally, the sun should not be round when it was born, this should be related to its rotation, if there are edges and corners, in the rotation of air friction and combustion, it will definitely derive a law suitable for the survival of all things, this is like football, if you make a square, you will kick for a long time, and roll for a long time, it will be close to the circle without limit. That's the truth, it's not good, hopefully!

Anyone who has studied in high school knows that the equipotential surface of the gravitational field is a spherical surface, and if the sun, a planet with such a huge gravitational force, is not in the same equipotential plane, the potential energy is not equal, and the gravitational force is not equal, then it is unstable, and it will be stabilized until it is transformed into the same equipotential plane (equivalent to water flowing low and landslides).

It's actually related to the knowledge of physics.

First of all, let's take an example from life, for example, if water is thrown out, it can only be a round object, and it is impossible to produce other shapes, so only a circle is the most stable shape.

And due to the action of force, it also produces rotation, so the planet, including the sun, can only be a circular sphere.

In space, because it is not affected by gravity (the gravitational force of the planet is negligible when considering the problem of the sun itself), the probability of the gas** expanding in all directions is equal, so it is spherical. It's like blowing a soap bubble, where gravity and buoyancy are balanced, and the force is equal in all directions to form a spherical shape.

If the sun is square, then the different parts of the square sun, such as the vertex and the edge, must be different in the shape of the square, and the distance from each point to the center of the circle is equal, so the force is equal, so the circle is the most stable, and it is inevitable.

With the same volume shape, the spherical surface area is the smallest, and the distance from the surface to the center of the sphere is equal. The gravity of the ball is averaged everywhere on the surface of the ball. So massive stars are spherical. Look at the ball from afar, and you will see a circle.

Massive celestial bodies, due to their own gravitational pull, will collapse into an approximately circular shape.

Because gravity acts like any other star, the gravitational pull of its core balances its surface tension and forms a spherical shape.

The reason for the rotation.

The sun is a high-speed rotating object, in the process of rotation, the center of the sun's gravitational field is equal to the edge of the position, if the sun is not round, if it is square, then in the same gravitational field, the surface cover of the sun to the core of the sun (central force field point) is not equal, then it will affect the rotation of the sun, which will cause a very unstable phenomenon, because there is a gravitational field, then a centrifugal force will be generated in the process of rotation, under the action of a centrifugal force, If it is square, then the force at the edge point of it is not the same, there is a force difference between the objects, in mechanics it is relative motion, the final result of the movement under the action of the force difference is a state of equilibrium, the force between the edge points of the rotating object tends to be in a state of equilibrium, only in the ball can be reflected, if the sun is square then its surface is very unstable, I think we will not evolve so developed.