In New Study, Scientists Confirm Existence Of Earth's Innermost Core

An intensive study by researchers on Tuesday notified, the earth's deep interior is based on the behavior of seismic waves from large earthquakes, confirming the existence of a distinct structure inside the planet's inner core.

The study revealed a wickedly hot innermost solid ball of iron and nickel about 800 miles (1,350 km) wide compromised the inner core of the earth.

While the diameter of the planet is about 7,900 miles (12,750 km). Its internal structure is made of four layers, a rocky crust on the outside, then a rocky mantle, an outer core made of magma and a solid inner core. This metallic inner core, about 1,500 miles (2,440) wide, was discovered in the 1930s and is based on seismic waves traveling through the earth.

Earlier in 2002, scientists proposed that lurking within this inner core was an innermost section separate from the rest, akin to a Russian Matryoshka nesting doll. And this was confirmed by enabling the increasing sophistication of seismic monitoring.

Seismic waves travel through the planet and are capable to reveal the contours of its interior structure based on the changing shape of the waves. All the previous studies helped scientists to detect these waves bouncing up to twice, from one side of Earth to the other and then back. 

And the new research study suggests waves from 200 quakes with magnitudes above 6.0 ricochet like ping pong balls up to five times within the planet.

Meanwhile, some scientists say we may know more about the surface of other distant celestial bodies than the deep interior of our planet. While some believe the inner core’s outer shell and its newly confirmed innermost sphere both are hot enough to be molten but are a solid iron-nickel alloy.