Aurora Alert 2010 - Image

Credit: NASA
August 3, 2010
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Credit: NASA

NASA's Solar Dynamics Observatory snapped this X-ray photo of the Sun early in the morning of Sunday, August 1st. The dark arc near the top right edge of the image is a filament of plasma blasting off the surface - part of the coronal mass ejection. The bright region is an unassociated solar flare. When particles from the eruption reach Earth on the evening of August 3rd/4th, they may trigger a brilliant auroral display known as the Northern Lights.