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Does mars have a magnetic field?

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Unlike the Earth, Mars has no inner dynamo to create a major global magnetic field. This, however, does not mean that Mars does not have a magnetosphere; simply that it is less extensive than that of the Earth. The magnetosphere of Mars is far simpler and less extensive than that of the Earth. read more

Our sister planets, Mars and Venus, are the oddballs: space probes have found no evidence of structured magnetic field lines on either planet, only traces. Since magnets lose their magnetism when heated a lot, it makes sense that Venus, where it is hot enough to melt lead, does not have a magnetosphere. read more

It probably means that Mars did once have a global magnetic field which produced these local magnetic areas, but the global field is no longer being generated, I understand that, but what I am having trouble grasping is how those local areas are still being generated. read more

Facts about Mars' magnetic field Unlike the Earth, Mars has no inner dynamo to create a major global magnetic field. This, however, does not mean that Mars does not have a magnetosphere; simply that it is less extensive than that of the Earth. read more

Venus, Mars, and the Moon all have a molten outer cores, yet none has a substantial internally-generated magnetic field. Mercury does have a global magnetic field, but it's rather puny compared to that of the Earth. We still don't quite know why the Earth's magnetic field is so old (over 4 billion years old) and so persistent. read more

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