Sunspots
Sunspots are dark spots that appear on the surface of the sun. They are caused by magnetic activity and are often associated with solar flares and coronal mass ejections. Sunspots can vary in size and shape, and can last from a few days to several months. They are important to the maritime industry because they can affect radio communications and navigation systems, as well as cause geomagnetic storms that can disrupt power grids and satellite operations.
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