Sunspots and Silhouettes . ... Credit Copyright: VegaStar Carpentier Explanation: What stands between you and the Sun? ... Finally, far in the distance and slightly buried into the Sun's surface , are sunspot s, the most prominent of which is sunspot region AR 1512 visible near the disk center. Since the time that this sunset image was taken, the sunspot region on the far left, AR 1515, has unleashed a powerful solar flare . ... NASA Web Site Statements, Warnings, and Disclaimers . ...