Very large prominence seen by Skylab in 1973. A solar flare. The sun at optical wavelengths. Granulation in the solar photosphere. The sun in H-alpha light.
Dark regions are sunspots, light are plages.
The sun in H-alpha light, seen to rotate. How magnetic field lines get wrapped on the solar surface. The sun in X-rays, showing the appearance of 3 jets of hot, confined plasma. High resolution spectrum of the sun.