Sunspot, July 25th 1991
NSO/AURA/NSF · Download full size image
Sunspot, July 25th 1991
Sunspot from July 25th 1991, showing fiducial mark. This picture was used in the article by Wallace et al., Science, 268, 1155, 1995 entitled 'Water on the Sun.' Posted on: 28 Feb, 2005
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