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An illustration of a distant quasar like the one used by astronomers to investigate the first generation of stars. (Image credit: NOIRLab/NSF/AURA/J. da Silva/Spaceengine)
An illustration of a distant quasar like the one used by astronomers to investigate the first generation of stars. (Image credit: NOIRLab/NSF/AURA/J. da Silva/Spaceengine)