Deep inside Earth, two massive hot rock structures have been quietly shaping the planet’s magnetic field for millions of ...
Ancient rocks show Earth’s magnetic field followed deep heat patterns inside the planet for hundreds of millions of years.
Morning Overview on MSN
Earth pulses with a bizarre magnetic wave every 7 years
Far below the deepest boreholes, Earth’s core appears to keep its own rhythm, a slow magnetic throb that repeats roughly ...
Morning Overview on MSN
Earth’s magnetic field flips often, and some reversals drag on 70,000 years
Earth’s magnetic field is often described as a steady shield, but the geological record tells a more restless story. Polarity flips, when magnetic north and south swap places, happen several times per ...
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