Why do some elliptical galaxies appear to be perfect spheres?

Some elliptical galaxies appear to be perfect spheres due to their isotropic distribution of stars and lack of significant rotation. This spherical shape results from the gravitational forces acting uniformly in all directions, leading to a smooth, rounded appearance. Additionally, the random motion of stars within the galaxy contributes to this uniformity, as there is no preferred axis of rotation, unlike spiral galaxies. Consequently, these elliptical galaxies maintain a more symmetrical and spherical structure.