A Coronal Cavity (IMAGE)

NASA/Goddard Space Flight Center

A Coronal Cavity

Caption

The faint oval hovering above the upper left limb of the sun in this picture is known as a coronal cavity. NASA’s Solar and Terrestrial Relations Observatory (STEREO) captured this image on Aug. 9, 2007. A team of scientists extensively studied this particular cavity in order to understand more about the structure and magnetic fields in the sun's atmosphere.

Credit

NASA/STEREO

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