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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.
3C 273 is a quasar located in the constellation Virgo. It was the first quasar ever to be identified. It is the optically brightest quasar in our sky (m ~12.9), and one of the closest with a redshift, z, of 0.158.A luminosity distance of D L = 749 megaparsecs (2.4 Gly) may be calculated from z.t is the optically brightest quasar in our sky (m ~12.9), and one of the closest with a redshift, z, of 0.158. A luminosity distance of D L = 749 megaparsecs (2.4 Gly) may be calculated from z.