Today's Sun has two groups of flaring sunspots--AR 3663 and AR 3664. Both ARs have the potential to direct powerful, X-Class flares at Earth. AR 3663 is so large (`10X Earth's diamater), it should be visible to the naked eye. I took a look with my solar specs, but I could not be sure I actually saw it. The images below show the full disk, with a zoomed image of AR 3664.
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