The Sun's exists outside of the chromosphere and appears during times of total eclipse as a pearly white crown.
It was initially posited to give-off a namesake undiscovered gas because the wavelengths of emission lines from it were unknown. In low mass dwarf stars, it is thought to consist of a "soft" and "hard" component that appear as spikes in its temperature spectrum. Special graphs of the best known example of this include LASCO and utilize an occulting disk; these graphs have been used to witness "halo events," which happen when mass ejections originating in this region are directed toward the Earth, appearing to envelope the Sun. The Sun's exists outside of the chromosphere and appears during times of total eclipse as a pearly white crown. For ten points, give this term for the outer atmosphere of a star.
It was initially posited to give-off a namesake undiscovered gas because the wavelengths of emission lines from it were unknown.
{corona}