Solar activity refers to any natural phenomena occurring on or in the Sun, such as:
- Sunspots and the
- Solar cycle
- Solar flares
- Solar wind
- Coronal mass ejection
- Solar variation, the sum of all the periodic and aperiodic solar fluctuations; what is typically referred to when the term "solar activity" is used unqualified
- Space weather, the collective effect of all of the above on animate and inanimate objects in orbit and on the earth
Famous quotes containing the words solar and/or activity:
“Lincoln becomes the American solar myth, the chief butt of American credulity and sentimentality.”
—H.L. (Henry Lewis)
“A constant smirk upon the face, and a whiffling activity of the body, are strong indications of futility.”
—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)