"Rare Double Quasar Found as Galaxies Merge and Black Holes Collide"

Astronomers using the Hubble Space Telescope have discovered a rare pair of gravitationally bound quasars, both blazing away inside two merging galaxies, that existed when the universe was just 3 billion years old. Quasars are bright objects powered by voracious, supermassive black holes blasting out ferocious fountains of energy as they engorge themselves on gas, dust, and anything else within their gravitational grasp. The detection yields clues as to how unsettled the cosmos was long ago, when galaxies more frequently collided and black holes were engorged with flotsam and jetsam from the close encounters.