Mass stellar graves explain quasar mystery

时间:2019-03-02 03:03:00166网络整理admin

By Stuart Clark THE first billion years of the universe’s history must have been a violent maelstrom in which uncountable numbers of black holes collided. That seems to be the only way to explain the huge size of intensely powerful quasars recently discovered in the distant universe. A quasar is a galaxy that shines because matter is falling into a huge black hole at its centre. The brighter it shines, the bigger the black hole. Quasar black holes weigh in at around 1 billion times the sun’s mass. But how did they get this big? According to current theory,