part of the roughly circular supernova remnant known as RCW 86

NASA image received July 1, 2009 and created from data obtained from NASA's Chandra X-ray Observatory and the European Southern Observatory's Very Large Telescope, shows a part of the roughly circular supernova remnant known as RCW 86. Astronomers on Wednesday said they had found the farthest supernova ever detected, a giant star that ripped apart around 11 billion years ago.
(AFP/NASA/File)