Reply to post: Re: Magnetic field ?

Auroras – the solar system's universal light show (except Neptune... sorry, Neptune)

Lil Endian Silver badge

Re: Magnetic field ?

A magnetic field is generated (in a celestial body) by a dynamo effect. That requires an electrically conductive interior - such as an iron core.

See: https://en.wikipedia.org/wiki/Dynamo_theory

Or, for a more sciency article - https://www.sciencedirect.com/topics/earth-and-planetary-sciences/dynamo-theory

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