Massive Filament Sighted
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17 July 2002Click on the image to view a massive filament which SOHO and the Big Bear Observatory recently captured. A filament is a mass of gas suspended over the Sun's photosphere by magnetic fields, In this case, the filament appears as a large dark line threaded almost 3/4 of the way across the solar disk. When we see a filament on the limb of the Sun, against the dark sky, we call it a prominence.