The Cassiopeia A supernova's first flash of radiation makes six clumps of dust (circled in annotated version) unusually hot. The supernova remnant is the large white ball in the center. This infrared picture was taken by NASA's Spitzer Space Telescope.

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Annotated Version

The Cassiopeia A supernova's first flash of radiation makes six clumps of dust (circled in annotated version) unusually hot. The supernova remnant is the large white ball in the center. This infrared picture was taken by NASA's Spitzer Space Telescope.

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