Unlike its geographical poles, Earth's magnetic poles that serve as the foundation of our navigation are actively moving.
원문출처 : https://www.cnn.com/2019/08/07/world/earth-magnetic-field-reversal-scn/index.html
원문출처 : https://www.cnn.com/2019/08/07/world/earth-magnetic-field-reversal-scn/index.html