PIA21942: Extensive Coronal Hole
 Target Name:  Sol (our sun)
 Mission:  SDO
 Instrument:  Atmosphere Imaging Assembly
 Product Size:  1500 x 1547 pixels (w x h)
 Produced By:  SDO
 Full-Res TIFF:  PIA21942.tif (4.019 MB)
 Full-Res JPEG:  PIA21942.jpg (155.5 kB)

Click on image above for all movie download options

Original Caption Released with Image:

A large coronal hole has been spewing solar wind particles in the general direction of Earth over the past few days (Aug. 31- Sept. 1, 2017). It is the extensive dark area that stretches from the top of the sun and angles down to the right. Coronal holes are areas of open magnetic field, which allow charge particles to escape into space. They appear dark in certain wavelengths of extreme ultraviolet light such as shown here. These clouds of particles can cause aurora to appear, particularly in higher latitude regions.


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: