The mystery of how Cassiopeia A exploded is unraveling thanks to new data from NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR. In this image, NuSTAR data, which show high-energy X-rays from radioactive material, are colored blue. Lower-energy X-rays from non-radioactive ...
WIRED Space Photo of the Day: Radioactive Remnant
Wired Science Staff
Wed, 19 Feb 2014 20:40:52 GMT
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