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Tag: John Tarduno

Researchers find that Earth’s magnetic shield is 500 million years older than previously thought

Researchers find that Earth’s magnetic shield is 500 million years older than previously thought

July 30, 2015

Since 2010, the best estimate of the age of Earth’s magnetic field has been 3.45 billion years. But now the Rochester researcher responsible for that finding has new data showing the magnetic field is far older.

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First measurements taken of South Africa’s iron age magnetic field history

First measurements taken of South Africa’s iron age magnetic field history

July 28, 2015

Combined with the current weakening of Earth’s magnetic field, the data suggest that the region of Earth’s core beneath southern Africa may play a special role in reversals of the planet’s magnetic poles.

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Ancient huts may reveal clues to earth’s magnetic pole reversals

Ancient huts may reveal clues to earth’s magnetic pole reversals

July 28, 2015

Patches of ground where huts were burned down in southern Africa contain a key mineral that recorded the magnetic field at the time of each ritual burning.

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“Space Gems” Share a Dramatic Origin Story

“Space Gems” Share a Dramatic Origin Story

November 15, 2012

These meteorites, or pallasites, were likely formed when a smaller asteroid crashed into a planet-like body about 30 times smaller than earth.

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