largest solar prominences

Though the single largest prominence cannot safely be identified, many spectacular examples have been recorded. For example, an image taken from Skylab in 1974 shows a loop- shaped quiescent prominence spanning more than half a million kilometres across the surface of the Sun. Such prominences can persist for weeks or months and typically extend upwards to 50,000 km above the photosphere of the Sun. Eruptive prominences can appear as coherent tongues of gas streaming up to almost a million kilometres above the solar surface.