| Term: | Solar activity |
| Definition: |
The collective term for all active phenomena on the Sun, including sunspots, faculae, active regions, plages, active prominences, and flares. |
| Term: | Solar activity |
| Definition: |
The general term for all forms of short-lived phenomena on the Sun, including solar flares, sunspots, prominences, etc., indicating that the Sun is an active star. |