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

With the peak in the solar cycle, they will also be keeping an eye on solar activity and enhanced radiation which could affect the astronauts.

From BBC

The Northern Lights were seen in the UK again on Monday night following an increase in solar activity over the last few days.

From BBC

The natural phenomenon - known as the Aurora Borealis - was the result of increased solar activity sending energy towards Earth and interacting with our atmosphere.

From BBC

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