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solar activity

American  

noun

Astronomy.
  1. the sum of all variable and short-lived disturbances on the sun, as sunspots, prominences, and solar flares.


Example Sentences

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During the maximum solar activity cycle that comes every 11 years, there can be 10 or more in a single day.

From BBC Aug. 14, 2026

With the technological abilities of modern cameras, including those on your phone, you can take good pictures of eclipses and other solar activity like sunspots, which look like dark patches on the Sun's surface.

From BBC Aug. 13, 2026

"We did that," she continued, but "what has happened is essentially a mixture of solar activity and gravity forces have put it on a path towards the Moon."

From Barron's Aug. 4, 2026

Those variations can be influenced by factors including solar activity and changes in Earth's magnetic field.

From Science Daily Jul. 28, 2026

His launch had been delayed due to various technical problems and high solar activity.

From "Women in Space" by Karen Bush Gibson

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