Solar feature
Plage
A bright region of the chromosphere associated with an active region, where concentrated magnetic field heats the plasma above a group of sunspots. Plages are conspicuous in the light of hydrogen and calcium and mark magnetically active areas even as the sunspots themselves come and go.
Highlights
- ›Bright chromospheric mark of an active region
The Sun, its layers & phenomena
Across solar physics
Knowledge connections
- Associated withThe Chromosphere
- Associated withThe Sun
- Associated withThe Chromosphere
- Associated withActive Regions
- Associated withSunspots
- Associated withSolar Irradiance Variation
Sources
The primary and reference sources this topic draws on.
- NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.