The rationale behind the presence or absence of a magnetic field by a celestial body is elucidated in this article. It is also possible to find out if an incandescent core exists and, if so, how the inner core rotates relative to the main body. An incandescent body in motion can create magnetic fields that align with the axis of rotation by moving electrical charges in separate layers. Electric currents or the movement of electric charges within the bodies are not required for generating magnetic fields, but rather the movement of these charges with the rotating body.
Geomagnetism, planets, origin, reversal, geodynamo, nature.