Tuesday 9th Meeting – Earth’s Magnetic Field. From Origin to Importance

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At our next meeting on the 9th of October, we will be diving head first into Earth’s magnetic field, and why it so so important for the existence of life on Earth.

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Earth’s magnetic field, also known as the geomagnetic field, is the magnetic field that extends from the Earth’s interior out into space, where it meets the solar wind, a stream of charged particles emanating from the Sun. Its magnitude at the Earth’s surface ranges from 25 to 65 microteslas (0.25 to 0.65 gauss). Approximately, it is the field of a magnetic dipole currently tilted at an angle of about 11 degrees with respect to Earth’s rotational axis, as if there were a bar magnet placed at that angle at the center of the Earth. The North geomagnetic pole, located near Greenland in the northern hemisphere, is actually the south pole of the Earth’s magnetic field, and the South geomagnetic pole is the north pole. The magnetic field is generated by electric currentsdue to the motion of convection currents of molten iron in the Earth’s outer core driven by heat escaping from the core, a natural process called a geodynamo. (Wikipedia)

 

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Our telescopes will be operating – dependent on lack of cloud cover. Venus, Mars,
Jupiter and Saturn will be visible.

 

 

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