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What’s inside Earth? | Live Science


The center of the Earth is almost 4,000 miles (6,400 kilometers) beneath our feet. To put that into context, the deepest humans have ever drilled is 7.6 miles (12.2 km) down, and it took geologists nearly 20 years to get that far, according to Smithsonian Magazine

Fortunately, scientists don’t have to burrow inside our planet to study it. By measuring seismic waves traveling through Earth, researchers have developed a solid understanding of its basic internal structure. So, what’s inside Earth?

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