Black holes are cosmic factories for building galaxies

(Telegraph): The new research may help explain why large galaxies tend to have super-massive black holes at their cores. Astronomers have long wanted an answer to the chicken-and-egg question of what comes first, a super-massive black hole or the stars surrounding it. A new observation of a far away object five billion light years from Earth may now help to solve the riddle. The object is a quasar, a powerful source of energy believed to mark the location of an active giant black hole. Nothing that gets close enough to a black hole can escape its powerful gravity. However, material swirling around the edge of a black hole can radiate enormous amounts of energy.

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