How the Solar Eclipse Could Help Us Solve a Mystery About the Sun

You’ve been drawing the sun’s corona ever since you were in pre-K — and that’s probably the last time it made any sense. The sun is the 865,000-mile ball of gas that was the scribbly yellow circle in your drawing. The corona is the veil of luminous plasma streaming millions of miles into space, where you drew straight yellow rays. Things were never so simple again.

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