Eclipse Solar Totality EarringsDescription Specifications If you've witnessed a total solar eclipse, you know that seeing the sun's corona with your own eyes is a transcendent experience. If you haven't yet, then you're in for a treat! A stellar corona is the outermost layer of a star. Made of plasma, it stretches millions of kilometers out from a star's chromosphere and is much hotter than the surface of the star. The word 'corona' is Latin for 'crown' and comes from the Ancient