Earth's magnetic field Current Affairs, GK & News

Earth’s Magnetic Field

The Magnetic Field of the Earth is generated by the motion of molten iron alloys in the Earth’s outer core.  The solid inner core is too hot to hold a permanent magnetic field, but the outer core gives rise to Earth’s magnetic field. The geomagnetic field extends from outer core to where it meets the ..

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Source of Earth’s Magnetic Field

A new study proposed that the ‘basal magma ocean’ of the earth, and not its core, is responsible for the earth’s magnetic field. Dynamo Theory The dynamo theory gives the mechanism by which stars and planets generate magnetic fields around them. It postulates that an electrically conductive fluid that is rotating and convecting in the ..


Solar storm headed to earth

A geomagnetic storm from the sun might bring the aurora borealis, the northern lights as far south as Colarado. If the storm does not change its course which it usually does, the shift can prevail for a longer period. The northern lights are formed due to the collision between the gaseous particles in the Earth’s ..