NASA's Chandra X-ray observatory reveals breeding ground of black holes billions of years ago
About 70 per cent of the objects in the new image are supermassive black holes, which may range in mass from about 100,000 to 10 billion times the mass of the Sun.
NASA said its Chandra X-ray Observatory has obtained an image that gives astronomers the best look yet at the growth of black holes over billions of years beginning soon after the Big Bang.
This is the deepest X-ray image ever obtained, collected with about eleven and a half weeks of Chandra observing time, the US space agency said in a statement
"With this one amazing picture, we can explore the earliest days of black holes in the universe and see how they change over billions of years," said Pennsylvania State University's Niel Brandt, who led a team of astronomers studying the deep image.