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Greenland rocks suggest Earth’s magnetic field is older than we thought:
[www.nature.com]

Analysis finds that the planet’s protective shield was in place by at least 3.7 billion years ago.
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My 2 cents, the Earth is older that 4.5 billions years and it has had a magnetic field for much much longer than this.

Regards,
Daniel

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Subject Views Written By Posted
Earth’s magnetic field is older than we thought 531 D-Archer 12-Dec-19 15:40
Re: Earth’s magnetic field is older than we thought 91 Lost_In_Place 20-Dec-19 01:22
Re: Earth’s magnetic field is older than we thought 27 Candide 13-Jan-20 09:26
Re: Earth’s magnetic field is older than we thought 24 D-Archer 13-Jan-20 16:00
Re: Earth’s magnetic field is older than we thought 23 Candide 14-Jan-20 23:07
Re: Earth’s magnetic field is older than we thought 18 D-Archer 15-Jan-20 15:27
Re: Earth’s magnetic field is older than we thought 28 Open mind 15-Jan-20 16:19


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