© Reeth Informal Astronomy Group unless otherwise indicated


  Reeth Informal

 Astronomy Group


covering the Northern Yorkshire Dales

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Solar Cycle 25 is under way after the last minimum in December 2019.

Solar cycles typically last about 11 years during which solar activity goes from a minimum to a maximum and back.

New sunspots and flares indicate that activity is increasing and Cycle 25 is under way.

Outbursts from the Sun can lead to a range of effects, from aurorae to satellite orbital decay and disruption to radio communications and power grids.

At the height of the cycle the Sun’s magnetic poles flip – on Earth it would be like the North and South Poles swapping every decade.


Many thanks to our member Bert for these images of the Sun which he took on 1st December 2020.

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