At 12 billion times as big as the sun, a newly-discovered black hole is challenging theories about how the phenomena grow.<br /><br /> Scientists say the black hole was formed around 900 million years after the Big Bang and is thought to be twice the mass of previously-found holes of similar age. <br /><br /> A global team of researchers based at Peking University made the discovery and published their findings in Nature journal. They are working on a project which has provided imagery data of some 35 percent of the Northern Hemisphere sky.<br /><br /> SDSS Data Lead to Discovery of 12 Billion Solar Mass Black Hole in Young Universe http://t.co/39MosW9wIx— Sloan Digital Skies (@sdssurveys) February 25, 2015<br /> <br /><br /> Group of astronomers has discovered a supermassive black hole potentially billion times larger than the sun. pic.twitter.com/dDL0qdgGD2— Good Morning America (@GMA) February 26, 2015<br /> <br /><br /> But they are unable to explain how the hole grew so quickly. Under currently understood laws of physics, it couldn’t hav
