Most distant quasar discovered sheds light on how black holes grow

A team of astronomers led by the University of Arizona has observed a luminous quasar 13.03 billion light-years from Earth--the most distant quasar discovered to date. Dating back to 670 million years after the Big Bang, when the universe was only 5% its current age, the quasar hosts a supermassive black hole equivalent to the combined mass of 1.6 billion suns.