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The newfound LQC is composed of 73 quasars and spans about 1.6 billion light-years in most directions, though it is 4 billion light-years across at its widest point. To put that mind-boggling size into perspective, the disk of the Milky Way galaxy â home of Earth's solar system â is about 100,000 light-years wide.
This black hole â technically known as SDSS J010013.02+280225.8, or J0100+2802 for short â is not only the most massive quasar ever seen in the early universe but also the most luminous. It is about 429 trillion times brighter than the sun and seven times brighter than the most distant quasar known.