NASA’s Nuclear Spectroscopic Telescope Array, or NuSTAR, has captured the best high-energy X-ray view yet of a portion of our nearest large, neighboring galaxy, Andromeda. The space mission has observed 40 "X-ray binaries"—intense sources of X-rays comprised of a black hole or neutron star that feeds off a stellar companion.
from Astronomy News – Space News, Exploration News, Earth Science News, Earth Science http://ift.tt/1R9pJ5A
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Telescopically 