For The First Time, We Have Confirmation That Earth’s Core Is Actually Solid

mindblowingscience:

For the first time, geologists have confirmed that our planet’s inner core is indeed solid – although not quite as firm as previous models have suggested.

Thanks to a new method for detecting soft whispers of seismic waves, analysis of an elusive type of earthquake ripple has revealed key properties of our planet’s deepest layer.

Researchers from the Australian National University (ANU) zeroed in on a low amplitude ‘J-phase’ seismic wave that passes through the planet’s core, allowing them to finally put constraints on its solidity.

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For The First Time, We Have Confirmation That Earth’s Core Is Actually Solid