How does a magnetometer detect water?

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Offline mcjhn

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How does a magnetometer detect water?
« on: 29/12/2010 00:02:25 »
I heard the Galileo spacecraft detected signs of water in using a magnetometer, does anyone know how?
« Last Edit: 29/12/2010 00:11:15 by mcjhn »

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Offline mcjhn

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How does a magnetometer detect water?
« Reply #1 on: 29/12/2010 02:17:06 »
p.s. I know how a magnetometer itself works from this excellent vid
http://www.youtube.com/watch?v=EWHIMBrIs6o

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Offline JP

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How does a magnetometer detect water?
« Reply #2 on: 29/12/2010 03:35:26 »
The brief summary is that by looking at how a moon magnetized in response to it's associated planet's magnetic field, you can tell something about what it's made of.  So the magnetometer measured the magnetic field and a detailed analysis showed that saline water under the surface explained the measurements.

Check this out: http://www.space.com/searchforlife/seti_phillips_europa_040226.html

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Offline mcjhn

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How does a magnetometer detect water?
« Reply #3 on: 29/12/2010 18:45:37 »
thanks!