Infrared Echoes Give NASA's Spitzer A Supernova Flashback

Hot spots near the shattered remains of an exploded star are echoing the blast's first moments, say scientists using data from NASA’s Spitzer Space Telescope.Eli Dwek of NASA’s Goddard Space Flight Center in Greenbelt, Md., and Richard Arendt of the University of Maryland, Baltimore County, say these echoes are powered by radiation from the supernova shock wave that blew the star apart some 11,000 years ago. "We’re seeing the supernova's first flash," Dwek says……………
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