solar activity

American

noun

Astronomy.

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

Example Sentences

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Instead, it outlines a possible physical mechanism showing how shifts in ionospheric charge levels -- triggered by intense solar activity such as solar flares -- might interact with already weakened areas of the crust and influence how fractures develop.

From Science Daily

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

From Science Daily

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

From Science Daily

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

From BBC

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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023