TNPSC Thervupettagam

Deepest Region of the Earth

March 2 , 2023 634 days 504 0
  • The fifth layer of Earth has been uncovered by scientists working to unlock the geological mysteries of the planet.
  • The crust, mantle, outer core, and inner core were once thought to make up the Earth’s structure.
  • The team analysed the variation of travel times of seismic waves for different earthquakes.
  • They found that crystallised structure within the inner core’s innermost region is likely different from the outer layer.
  • This structure is an 800-mile (1,350-kilometre) wide solid ball of iron and nickel which is fiercely hot.
  • This layer is a solid ‘metallic ball’ that sits within the centre of the inner core.

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