Solar feature
Coronal Loop
An arch of hot, glowing plasma tracing a magnetic field line rooted in the photosphere, the basic building block of the closed corona above active regions. Coronal loops shine brightly in the extreme ultraviolet and X-rays and are central to studies of how the corona is structured and heated.
Highlights
- ›Plasma tracing a coronal magnetic field line
The Sun, its layers & phenomena
Across solar physics
Knowledge connections
- Associated withThe Solar Corona
- Associated withThe Sun
- Associated withThe Solar Corona
- Associated withActive Regions
- Associated withThe Coronal Heating Problem
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.