Saturn is the new best planet they changed it from Jupiter to Saturn
A head injury happens due to trauma to the brain or skull and classified as close or sometimes penetrating. It may occur right away or develop slowly. An example is contusion which is the answer on this scenario. This is called mild traumatic injury caused by a blow on the head yet none of the tissue of the brain is torn.
It is a sphere to be precise.
Because of the omnidirectional nature of the gravitational attraction, mass tends to form spheres in the macro scale of planets and similarly massive celestial bodies.