Hidden mega-structures deep inside Earth may have been quietly steering our planet’s magnetic field—and rewriting what we thought we knew about Earth’s past. Peering into Earth’s interior is far more difficult than exploring space. Humans have traveled about 25 billion km beyond our planet, yet the deepest drill hole ever made reaches just over 12 […]Earth,Geophysics,Magnetosphere,University of Liverpool#Massive #Deep #Earth #Steering #Planets #Magnetic #Field1770114723
