Sun’s (Solar) Prominence Compared to the Size of Earth. Image Credit: NASA/SDO

Structure that occurs above the photosphere of the Sun. Prominences may reach high into the corona, often as graceful loops that may hang suspended for many days. Prominences are usually associated with regions of sunspot activity and tend to lie on the boundary of regions having opposite magnetic polarity. Streaming arches and their stability for days at a time are associated with magnetic forces acting on the charged particles in the loops. The violently eruptive prominences that are sometimes observed are associated with corresponding sudden changes in the magnetic field of the Sun.

Some or all content above used with permission from J. H. Wittke.