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November 12, 2011

Magnetic mystery puts Moon in a spin

Since man went to the moon a one question has remained unanswered why are there magnetic rocks on the moon if the moon doesn't have a magnetic field? Two theories have been hypothesized to answer this question.
The first theory says that a magnetic filed was generated when the moon orbited closer to the Earth the gravitational force on the moon was stronger and caused the liquid core of the moon to rotate differently from the mantle so the moon was a big dynamo and that was what generated the magnetic field. This process stopped when the moon got farther away from the Earth.
The other theory says that large impacts hitting the moon caused its rotation rate to change and adding heat to the interior. The changed rate causes the mantle and the liquid core to rate at different rates which causes a magnetic field. The magnetic field hypothesized by both theories would be 100 times weaker than Earth's.

http://www.abc.net.au/science/articles/2011/11/10/3360649.htm?site=science&topic=latest

Posted by jsatonik at November 12, 2011 07:28 PM

Comments

that's really interesting. Has there been any news on any similar events taking place on any other moons in our solar system?

Posted by: amug at November 16, 2011 12:39 AM

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