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solar activity

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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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for solar activity
  • So variations in solar activity can drive changes in the weather.
  • The cause is generally ascribed to a combination of diminished solar activity and large volcanic eruptions.
  • Twice a day visitors can glimpse sunspots, flares, and other solar activity.
  • Satellites have revealed that the upper atmosphere actually swells by day and contracts by night due to solar activity.
  • Note there that he bases his forecasts more upon solar activity than other forecasters.
  • Increased solar activity should result in all of the layers of the warming.
  • solar activity matches almost perfectly with global temperatures.
  • Wouldn't solar activity cover the whole planet, and solar system.

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