Massive Black Holes Littered the Early Universe, Simulation Suggests

Since the gravitational waves predicted by Einstein were first detected in 2015, astrophysicists have been pondering the gravitational wave background

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Colorado ,United States ,Boulder ,Scott Ransom ,Joseph Simon ,University Of Colorado ,National Radio Astronomy Observatory ,Astrophysical Journal ,Milky Way ,North American Nanohertz Observatory ,Gravitational Waves ,