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

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

Since launch, it has provided an almost unbroken record of solar activity spanning nearly three full 11-year solar cycles.

From Science Daily • Dec. 3, 2025

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