PIA15378: Substantial Coronal Holes
 Target Name:  Sol (our sun)
 Mission:  SDO
 Instrument:  Atmosphere Imaging Assembly
 Product Size:  3300 x 1854 pixels (w x h)
 Produced By:  SDO
 Full-Res TIFF:  PIA15378.tif (8.71 MB)
 Full-Res JPEG:  PIA15378.jpg (492.2 kB)

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Original Caption Released with Image:

A pair of large coronal holes rotated into view over the past few days (Oct. 20-21, 2016). Coronal holes appear dark in certain wavelengths of extreme ultraviolet light, such as in the wavelength used here. These holes are areas of open magnetic field that spew solar wind into space. Sometimes, when they are facing Earth, they can cause geomagnetic disturbances that generate aurora. The lines you see were drawn to represent how solar scientists are modeling the magnetic field lines.


SDO is managed by NASA's Goddard Space Flight Center, Greenbelt, Maryland, for NASA's Science Mission Directorate, Washington. Its Atmosphere Imaging Assembly was built by the Lockheed Martin Solar Astrophysics Laboratory (LMSAL), Palo Alto, California.

Image Credit:
NASA/GSFC/Solar Dynamics Observatory

Image Addition Date: