How quasar SDSS J0 100+2802 was discovered?
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Astronomers from Peking University in China and from the University of Arizona discovered the brightest quasar SDSS J0 100+2802 with the most massive black hole of 12 billion solar-mass. This quasar is seven times brighter than the most distant quasar known which is 13 billion years away. The discovery of this quasar marks an important step in understanding how quasars have evolved only 900 million years after the Big Bang which is thought to have happened 13.7 billion years ago. The quasar was first discovered by 2.4-meter Lijiang Telescope in Yunnan, China, making it the only quasar ever discovered by a 2-meter telescope at such distance. Till now, astronomers have discovered more than 200000 quasars, with ages ranging from 0.7 billion years after the Big Bang till today.
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