(Animation) Solar Magnetic Field Lines (IMAGE)
Caption
Closed magnetic field lines loop back to the Sun to form helmet streamers, surrounded by open field lines that reach out into space, as depicted in this illustration. Download this animation: https://www.nasa.gov/sites/default/files/thumbnails/image/sunloop1.gif
Credit
NASA's Goddard Space Flight Center/Lisa Poje/Genna Duberstein
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