Solar Activity

Solar Activity RSS Feed
Any change in the sun's appearance or behavior. The sun's activity is described as being very low, low, moderate, high or very high. Solar activity changes over a period of, on average, 11 years. At solar maximum, the solar activity is high and so too the Extreme Ultraviolet (EUV) radiation output which affects the ionosphere. At solar minimum, the opposite is true.

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GeoColor image of the total solar eclipse over North America on 8 April 2024 at 16:40 UTC captured by the ABI instrument aboard the GOES-East satellite
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True-color corrected reflectance image of a darkened swath due to the solar eclipse over Australia on 20 April 2023 from the VIIRS instrument aboard the joint NASA/NOAA NOAA-20 satellite
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Partial Solar Eclipse on 10 June 2021 (MODIS/Aqua) - Feature Grid
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