If this turns out to be true, the Sun’s corona during the August 12 eclipse would be quite complex and spectacular, according to a statement from RRI. Why study the sun’s corona? The solar corona is very faint compared to the bright solar surface. A rare event, invisible from IndiaIn a total solar eclipse, the entire visible disk of the Sun is occulted by the Moon, turning day into night for a few minutes. While most of Spain will get to see the total solar eclipse, other parts of Western Europe, parts of northwestern Africa, and some parts of the U.S. will see a partial solar eclipse.