Recent Examples of corona from the Web
The upper layers of the sun such as the chromosphere and the corona, which are not usually visible to the naked eye, can be seen during total eclipses as a ring of light around the moon, according to NASA.
Around 10:15 a.m. Pacific Time, the moon completely blotted out the sun overhead in Madras, Oregon, leaving just the sun’s corona — its outermost layer — glowing like neon embroidery around a black orb.
Taking observations from twin telescopes mounted on the noses of the planes, the scientists will capture the clearest images of the Sun’s outer atmosphere — the corona — to date, according to NASA.
Citizen scientists stationed all along the eclipse's path will take photographs of the corona, which NASA will later compile into a movie.
Not that long ago, people peered at the obscured sun and its glowing corona through smoky glass from soda bottles and the like.
But those instruments obscure the inner portion of the corona, where a lot interesting stuff is going on.
At the moment of totality the sun's corona — an aura of plasma that surrounds the sun — is visible from behind the moon, something which is normally hidden from the human eye, according to Kirk.
A total solar eclipse provides scientists with a unique opportunity to observe certain features of the sun; in particular, the mysterious corona.
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Definition of Corona
CORONA Defined for English Language Learners
Definition of corona for English Language Learners
: a bright circle seen around the sun or the moon
medical Definition of corona
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