All planets are spherical to a certain degree, but have you ever wondered why? Let’s step 4.5 billion years back in time. A huge cloud of gas and dust, known as a nebula, collapsed and formed a superheated star. This star, as a result of its gravitational pull, attracted all nearby matter and created a massive rotating disk of debris around its center. This debris collided with each other, exchanging mass, heating up with friction, and eventually growing into massive bodies with strong gravitational centers. This was the birth of our planets. On any given planet, the gravitational pull is equal from all sides, down towards the center. This accounts for the spherical shape of planets. In fact, all significantly massive objects are spherical because of their strong gravitational pull, and extreme masses.
