The Black Hole Restaurant At The End Of The Universe
Monday, August 11, 2014 - 11:01
in Astronomy & Space
At the ends of the Universe there are black holes billions of times the mass of our sun. These giant quasars feed on interstellar gas, swallowing large quantities of it non-stop - and that is how they can be detected: The light that is emitted by the gas as it is sucked in and crushed by the black hole's gravity travels for eons across the Universe until it reaches our telescopes. Looking at the edges of the Universe is looking into the past. These far-off, ancient quasars appear to us in their "baby photos" taken less than a billion years after the Big Bang: monstrous infants in a young Universe. read more