The Earth's core activity has gotten the attention of scientists. The core might have stopped spinning or is going in reverse. The Earth's core contains a liquid outer section and a solid part in the middle. The recent detection was done by analyzing seismic wave data. The data was collection from over the past 60 years. According to researchers at Peking University, the core could have stopped around 2009. Only now has it resumed its rotation, but in an opposite direction. The core tends to rotate counter-clock wise. There might be a pattern for which scientists do not know the reason for. Knowledge of the Earth's core is difficult to acquire. Getting equipment to the core for examination would require advanced engineering. The immense pressure would destroy any camera that could go there. The outer core contains nickel and liquid iron. What core activity demonstrates is more must be discovered about Earth. Just below the surface is a unique environment. The change in core activity is nothing to cause alarm. There are no disturbances on the surface related to ecological systems. Rotation change according to the study occurred in the 1970s. Based on the models it is predicted another will happen in the 2040s. The information is of use to geology and geophysics. The Earth has certain movement cycles related to its core. The mystery is what is the purpose of changes in rotation. Seismologists are attempting to provide an answer. The technological limitations and gaps in knowledge remain obstacles.
