What's inside Earth quiz: Test your knowledge of our planet's hidden layers Two enormous blobs deep inside Earth appear to be the remnants of oceanic crust that was pushed down into the mantle ...

Volcanic eruptions can destroy essential infrastructure, ground air traffic for days, wipe out entire cities, disrupt the climate for years, and even wipe out life on Earth, so it's important to know ...

But a few years ago, Stephenson and colleagues found evidence Earth's inner core may actually have two distinct layers. "It's very exciting – and might mean we have to re-write the textbooks!" ...

Some studies have suggested that they're material from the ancient Earth — either a layer of primordial unmixed rock from the planet's formation or a leftover hunk of the giant space rock that ...

Scientists have identified mysterious 'blobs' about 1,200 miles under the Earth's surface that could cause massive volcanic ...

Not long ago it was thought Earth’s structure was comprised of four distinct layers: the crust, the mantle, the outer core and the inner core. The findings, published in Nature Communications ...

Did Earth Really Once Have a Ring Around it? According to One Theory, Yes — And It Left A Mark 21 craters in ancient rock layers are all that's left of Earth's once flashy accesory.

Normally, younger rocks are deposited above older ones, forming predictable geologic layers. In the North Sea, this process ...

No one can see inside the Earth, nor can drill deep enough to take rock samples from the mantle, the layer between Earth's core and crust. So geophysicists use indirect methods to see what's going ...