NASA says that this particular coronal hole is about 400,000 miles across.
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Leave it to NASA to take an amazing photo of the Sun. Using the Solar Dynamics Observatory, NASA has obtained a stunning photo of a humongous coronal hole on the Sun.
How big? The space agency says that the coronal hole is more than 50 Earths across. It certainly isn’t difficult to spot in the picture. This coronal hole is located in the upper left side of the SDO’s image.