MULTIZ321
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BLUEWATER BY SPINNAKER HHI
ROYAL HOLIDAY CLUB RHC (POINTS)
Earth's Magnetic Field is at Least Four Billion Years Old - by Sarah Zielinski/ Science/ SmithsonianMag.com
"Roughly four billion years ago, young Earth was nearly done making the transition from a hellish molten mass to a ball of rock with a solid surface. Now, grains of zircon preserved since that time show that our fledgling planet was already protected by magnetic shielding. The discovery indicates that Earth's magnetic field is almost a billion years older than previously suspected, which not only provides insight into the past evolution of the planet but may also help to illuminate its future..."
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. (NASA)
Richard
"Roughly four billion years ago, young Earth was nearly done making the transition from a hellish molten mass to a ball of rock with a solid surface. Now, grains of zircon preserved since that time show that our fledgling planet was already protected by magnetic shielding. The discovery indicates that Earth's magnetic field is almost a billion years older than previously suspected, which not only provides insight into the past evolution of the planet but may also help to illuminate its future..."
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. (NASA)
Richard