Andromeda Galaxy's Bright X-ray Mystery Solved by NuSTAR Pasadena CA (JPL) Mar 28, 2017 - The Milky Way's closest neighbor [of comparable size], [the] Andromeda [galaxy], features a dominant source of high-energy X-ray emission, but its identity was mysterious until now. As reported in a new study, NASA's NuSTAR (Nuclear Spectroscopic Telescope Array) mission has pinpointed an object responsible for this high-energy radiation. The object, called Swift J0042.6+4112, is a possibl ... more
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