Two groups of scientists, using data from Chandra X-ray Observatory and other telescopes, have found evidence that the growth of the biggest black holes in the Universe is outrunning the rate of formation of stars in the galaxies they inhabit.
In biology, "symbiosis" refers to two organisms that live close to and interact with one another. Astronomers have long studied a class of stars-- called symbiotic stars--that co-exist in a similar way.
Astronomers have determined the Big Bang occurred about 13.8 billion years ago and have evidence from the SDSS that supermassive black holes with masses of about a billion times that of the sun existed by about 12.8 billion years ago.
Giant black holes are generally stationary objects, sitting at the centers of most galaxies. However, using data from NASAs Chandra X-ray Observatory and other telescopes, astronomers recently hunted down a supermassive black hole that may be on the move.