"Photosphere." . . "Lyman alpha radiation." . . "Spectral resolution." . . "Solar activity." . . "Chromosphere." . . . . . . . . . . . "Exploration of the solar-stellar connection at high specral resolution with the ultraviolet spectrometer and polarimeter and studies of thermal bifurcation at the"@en . . . . . . "Spatial resolution." . . . .