Solar feature
Filament
The same structure as a prominence, but seen against the bright solar disk rather than at the limb, where it appears as a dark, thread-like channel. A filament is cool plasma along a magnetic boundary; its sudden eruption is a common trigger of a coronal mass ejection.
Highlights
- ›A prominence seen dark against the disk
The Sun, its layers & phenomena
Across solar physics
Knowledge connections
- Associated withThe Chromosphere
- Associated withProminence
- Associated withThe Sun
- Associated withThe Chromosphere
- Associated withProminence
- Associated withCoronal Mass Ejection (CME)
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.