solar activity

American  

noun

Astronomy.

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

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Example Sentences

These influences include El Niño events, volcanic eruptions, and variations in solar activity.

From Science Daily • Mar. 9, 2026

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

From Science Daily • Feb. 24, 2026

Today, numerous satellites monitor the Sun, measuring the solar wind and the energy it emits, giving us a better understanding of solar activity and earlier warnings when it increases.

From BBC • Dec. 28, 2025

Although we are now past the peak of the current solar cycle and heading towards "solar minimum", expected around 2031-32, solar activity will remain relatively high through 2026.

From BBC • Dec. 28, 2025

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