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

The Northern Lights are mostly visible near the Arctic Circle but at times of high solar activity can be seen in other areas.

From BBC • Jan. 19, 2026

To prepare for next year's peak solar activity period, the IIA collaborated with Nasa to study the data it gathered from one of the largest CMEs that Aditya-L1 has recorded until now.

From BBC • Nov. 30, 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