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)
“For art to exist, for any sort of aesthetic activity or perception to exist, a certain physiological precondition is indispensable: rapture.”
—Friedrich Nietzsche (1844–1900)