
Sun_Features_Coronal_Holes-800×600-1
The dark area across the top of the Sun in this image is a coronal hole. This image was captured on Oct. 10, 2015, by NASA’s Solar Dynamics Observatory.
Image Credit: NASA/SDO
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https://science.nasa.gov/image-detail/amf-9bc63dca-30c6-4504-95a3-47e6d85a3b3c/
Image CreditNASA/SDO
Size800x600px

