Radioactive Ash | Space Wallpaper

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First Map of Radioactivity in Supernova Remnant
This stunning space wallpaper is the first map of radioactivity in a supernova remnant, the blown-out bits and pieces of a massive star that exploded. (Image credit: NASA/JPL-Caltech/CXC/SAO)

This stunning space wallpaper is the first map of radioactivity in a supernova remnant, the blown-out bits and pieces of a massive star that exploded. The blue color shows radioactive material mapped in high-energy X-rays using NASA's NuSTAR space observatory. [Full Story]

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