Curated by Yogesh Mishra , navbharattimes.com , Updated: Jan 25, 2023 at 3:49 pm
Mystery About Earth Inner Core: The inner layer of the Earth completes its rotation in 70 years. This means that its direction changes every 35 years. Its direction changed in the 1970s. The research found that the last time the layer changed its direction was in 2009. What effect it will have on the surface is not known at the moment.