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Mercury's Magnetic Field

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Author Topic:   Mercury's Magnetic Field
Coragyps
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From: Snyder, Texas, USA
Joined: 11-12-2002

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Message 29 of 42 (248707)
10-03-2005 8:32 PM 		Reply to: Message 23 by Matt P
10-03-2005 6:15 PM

Re: Density, composition, and rotation
Mars doesn't have much of a magnetic field since its density is so low- its core must not be completely metal, or really small.
But Mars does have some crustal magnetism - leftovers from minerals getting magnetized a few billion years ago, when it still had a molten core. CF, how fast can a Mars-sized body's core cool?
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