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“What is so surprising is that rapid, almost sudden, changes take place in the Earth’s magnetic field. This suggests that similar sudden changes take place in the movement of the liquid metal deep inside the Earth which is the reason for the Earth’s magnetic field,” Nils Olsen explains.
“By combining the Swarm and Ørsted magnetic measurements we hope to find out the reason for the-se rapid movements in the core,” Nils Olsen concludes.
The SWARM concept consists of a constellation of four satellites in two different polar orbits
Originally posted by nattykoo
I don't want to stear your thread away from it's original topic but your 'the core is cooling... if it cools enough it slow or even stop the spinning of the core effectively killing us all' caught my eye. I'm just wondering why is the core/mantle hot in the first place. Sure it is spinning, sure it is under pressure, sure the most dense materials are at the center but... do those factors contribute to it's incredibly high temperature?
[edit on 6-7-2008 by nattykoo]