RT @coreyspowell: Portrait of a humongous black hole (2.5 billion times the mass of the sun) in action: bit.ly/1N33tXV https://t.co/1R3FycJz20
RT @coreyspowell: Portrait of a humongous black hole (2.5 billion times the mass of the sun) in action: bit.ly/1N33tXV https://t.co/1R3FycJz20