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Article: Earth's magnetic field 3.2 bln-years-ago as strong as today

Article from:
The Hindustan Times
Article date:
April 5, 2007
Copyright

Report from the Asian News International brought to you by the Hindustan Times

London, April 5 -- Earth's magnetic field was nearly as strong 3.2 billion years ago as it is today, geophysicists at the University of Rochester have said.

The findings, which are contrary to previous studies, suggest that even in its earliest stages, the Earth was already well protected from the solar wind, which can strip away a planet's atmosphere and bathe its surface in lethal radiation.

"The intensity of the ancient magnetic field was very similar to today's intensity. These values suggest the field was surprisingly strong and robust. It's interesting because it could mean the Earth already had a solid ...

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