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Earth’s core has slowed so much it’s moving backward, scientists confirm. Here’s what it could mean

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Deep inside Earth ...
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Earth's Inner Core Is Solid - Not Liquid - Even Though It's Blistering Hot

Earth's inner core is solid and blistering hot. For decades, scientists have known the inner core is solid thanks to the pioneering work of Danish seismologist Inge Lehmann, who first proposed its ...
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Silicon and carbon could explain Earth’s onion-like inner core

Peering into a hidden metal world Earth’s inner core sits more than 5,000 kilometers below the surface, a solid ball of mostly iron and nickel surrounded by a liquid outer core that powers the ...