The rotation of Earth’s inner core has slowed
University of Southern California scientists have measured that the Earth’s inner core is backtracking — slowing down — in relation to the planet’s surface, using seismic data.
Earth’s mysterious D” layer: A relic of ancient oceans and planetary collisions
Researchers from Center for High Pressure Science and Technology Advanced Research, China, have proposed that the D” layer beneath Earth’s mantle may be remnants from a colossal impact during the planet’s formation.