Wiktionary
n. (context astronomy English) The upper atmosphere of the sun, only visible during a total solar eclipse
Usage examples of "solar corona".
The solar corona was magnificent: Plumes and streamers a million miles long blazed out of the darkened disk.
He had been everywhere, from the turbulent fringes of the solar corona to the cometary Oort Cloud at the edge of circumsolar space.
It's awe-inspiring to see a white spider of the solar corona spreading out from the sun into a black sky.
There was a telescope mount, equipped with lightweight cameras for observing the sun at a variety of wavelengths: hydrogen alpha emissions from the sun's surface, ultraviolet and X-ray photography of ionized atoms, solar corona and flare imaging systems.
Deep within the solar corona, and down to a velocity of five hundred kilometers per second, the Darwin matched speed with the station, about ten kilometers off.
He saw only the solar corona, a circle of flame enclosing a black disc.
Through a gap in darkness he saw the solar corona glowing around a shadow square.
Between the concentric circles of the Rim and the secondary reflectors, they could see the ghostly outline of the mile-wide primary mirror hanging even farther away in the void beyond, visible only by virtue of the stray light from the solar corona that leaked past the focal boundary of the secondary ring.
The asteroid had dipped well inside the solar corona itself, hurtling in to its point of closest approach.