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Earth's Core

Rocky bodies that slammed into early Earth might have been integral in setting up the conditions for our magnetic field.

Journey to the Center of Earth

Humble Magnesium Could Be Powering Earth’s Magnetic Field

The common element could have been driving the planet’s dynamo for billions of years

New Research

Is Global Warming Changing How Fast the Earth Spins?

New research suggests that as glaciers melt, the planet’s axis is shifting

An aurora glows near Australia in a photo taken from the International Space Station. Auroras are products of charged particles from the sun interacting with Earth's magnetic field.

Earth’s Magnetic Field Is at Least Four Billion Years Old

Tiny grains of Australian zircon hold evidence that our magnetic shielding was active very soon after the planet formed

Trending Today

Happy Birthday to Inge Lehmann, the Woman Who Discovered Earth’s Inner Core

Pioneering geologist used earthquakes to unravel the mystory of the Earth’s core

Yum! A candy-colored view of the planet Mercury shows differences in its chemical makeup.

New Research

Earth May Have Become Magnetic After Eating a Mercury-Like Object

Swallowing a sulfur-rich protoplanet could help explain two lingering mysteries in the story of Earth’s formation

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