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Old Ship Logs Unlock Secrets About Earth's Magnetic Field

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posted on Mar, 4 2007 @ 09:37 AM
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Old Ship Logs Unlock Secrets About Earth's Magnetic Field


Source Link: www.livescience.com

Captain Cook's Pacific Ocean voyage logs have proven to be quite valuable, but not on eBay.
Old ship logs tell the tale of Earth’s magnetic field and suggest that the current decline in strength may be a recent phenomenon and not necessarily a trend.
The Earth is like a magnet with two poles. Magnetic field lines travel between the North and South poles and are generated by the movement of molten iron in Earth's core.
(visit the link for the full news article)






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