geophysics
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Antarctica Got Blasted By a Powerful ‘Airburst’ Event 430,000 Years Ago
Asteroids that smash directly into Earth’s surface can cause extensive damage, but, as new evidence uncovered in east Antarctica suggests, asteroids that explode on entry can be equally devastating.
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Blobs In Earth’s Core Could Be Causing ‘Geomagnetic Jerks’ In The Magnetic Field
Every several years, magnetic field observatories record quick changes to the position or strength of the planet’s magnetic field, so-called geomagnetic jerks. The cause of these shifts has remained a mystery.
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Newly Detected Vibrations Show Earth’s Inner Core Is Solid
Researchers report that they’ve observed seismic waves traversing the Earth’s inner core, allowing them to figure out what it’s like: Solid, but softer than previously thought.
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Is The Earth’s Mantle Full Of Diamonds?
Parts of the Earth’s mantle might be loaded with diamonds, if a new model turns out to be correct. But no, you can’t mine them — they’d be over 100km below the surface.