解説Coronal mass ejection on 28 October 2021 ESA25032924.gif
English: A coronal mass ejection as seen by SOHO on 28 October 2021. This event is an example of a rare ‘ground level enhancement’. During these events, particles from the Sun are energetic enough to pass through the magnetic bubble that surrounds Earth and protects us from less energetic solar outbursts. This was only the 73rd ground level enhancement since records began in the 1940s, and none have been recorded since. Read more
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