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

The mission made significant discoveries, including the first data that show the existence of a transient third radiation belt, which can form during times of intense solar activity, Nasa said.

From BBC

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

From Science Daily

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