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Using the Fermi Gamma-ray Space
scopes, astronomers found 5 early
erse gamma-ray blazars. Two of them were
red by “billion-solar-mass” black holes
rding the NASA’s Goddard Space Flight
er. Credits: NASA's Goddard Space
ht Center/Scott Wiessinger, producer More


Added Jan 30, 2017  

Channel Entertainment

Duration 2:31   |   views 1888


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