This absolutely stunning image (and accompanying video below) shows a solar flare, 500,000 miles long, erupting from the surface of the sun. With the Earth used as a size comparison, it further adds to the incredulity of this event. From NASA:
On August 31, 2012 a long filament of solar material that had been hovering in the sun’s atmosphere, the corona, erupted out into space at 4:36 p.m. EDT. The coronal mass ejection, or CME, traveled at over 900 miles per second. The CME did not travel directly toward Earth, but did connect with Earth’s magnetic environment, or magnetosphere, causing aurora to appear on the night of Monday, September 3.
Wow. Check out the video below.