09:20 GMT +326 March 2019
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    Coronal hole on the Sun

    NASA Shows Giant Coronal Hole on Sun

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    NASA has published a video showing the sun's activity. The recording was made by a satellite of the Solar Dynamics Observatory (SDO) in early May.

    The video was captured using deep ultraviolet range filters, so that the large coronal hole would be visible on the solar disk. Beneath the coronal hole there is a darker area in the heliosphere with an increased solar wind speed. Reduced brightness of coronal holes is associated with the mass escape of plasma from these regions into interplanetary space.


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