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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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Using this method, they identified a solar proton event that likely occurred sometime between the winter of 1200 CE and the spring of 1201 CE, a period marked by unusually intense solar activity.

From Science Daily • May 14, 2026

With the peak in the solar cycle, they will also be keeping an eye on solar activity and enhanced radiation which could affect the astronauts.

From BBC • Mar. 30, 2026

When solar activity surges, electron density in the ionosphere can rise significantly.

From Science Daily • Feb. 24, 2026

The model connects space weather and seismic activity without claiming that solar activity directly causes earthquakes.

From Science Daily • Feb. 24, 2026

That and the solar activity caused high temperatures in the capsule, and he had to return early.

From "Women in Space" by Karen Bush Gibson

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