From the National Optical Astronomical Observatories
The delicately structured glow of the solar corona, or the outer layer of solar atmosphere, is seen during the March 7, 1970 total eclipse of the Sun. The corona is visible to the naked eye only during an eclipse.
Image Title: The Solar Eclipse of March 7, 1970
Credit: AURA/NOAO/NSF
Text based on accompanying on-line materials.
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Last modified on Sunday, December 17, 2000