TOP TEN SPACE PHOTOS: Most Viewed of 2008

TOP SPACE PHOTOS: Most Viewed of 2008
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7. New Supernova "Gumball" Picture

The remnant of a supernova, first seen from Earth more than a thousand years ago, hangs like a gumball in a composite image released by NASA in June.

The blast wave from the stellar explosion is still traveling at about 6 million miles (9.6 million kilometers) an hour, heating gases along its path that emit radiation as visible light.

More about this picture >>
—X-ray image courtesy NASA/CXC/Rutgers/G.Cassam-Chenao, J.Hughes et al.; radio image courtesy NRAO/AUI/NSF/GBT/VLA/Dyer, Maddalena & Cornwell; optical image courtesy Middlebury College/F.Winkler, NOAO/AURA/NSF/CTIO Schmidt & DSS
 
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