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

But, with solar activity generally remaining active there should be more opportunities to see the aurora in the coming months.

From BBC • Jan. 21, 2026

One recent example occurred in February 2022, when 38 of 49 Starlink satellites belonging to US space company SpaceX were lost just two days after launch due to heightened solar activity.

From Science Daily • Jan. 13, 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

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