In a groundbreaking discovery, scientists have found a fifth layer within the Earth's core, which could help us understand the planet's evolution and planetary origin. For the first time, researchers have observed a mysterious metal ball located within the Earth's inner core, after analyzing seismic waves generated by powerful earthquakes. 

This ball of nickel and iron measures 800 miles wide and is located within the inner core. As the size of the inner core increases, the solidification process generates more heat and light elements, contributing to the convection of the outer core, which generates the Earth's magnetic field.

The discovery of this new layer challenges the previous understanding of the Earth's internal structure, which was composed of the crust, mantle, outer core, and inner core. The fifth layer's discovery sheds light on the planet's intricate and mysterious composition, and scientists believe that it could help them understand other cosmic bodies' surface. This discovery could pave the way for future research and shed more light on the planet's origin and evolution.

The researchers were able to make this discovery by analyzing seismograms, digital records of ground movement, collected by seismic networks worldwide. The increasing number of seismic networks globally enabled the study to take place, leading to this groundbreaking discovery.

This exciting breakthrough in understanding the Earth's internal structure could pave the way for future discoveries and a better understanding of the planet's evolution and planetary origin. This discovery is the result of years of hard work and research by scientists, and its implications could go beyond Earth, as it could help us understand other cosmic bodies' composition.