Quiet Galaxies ChallengeQuiet Galaxies ChallengeTheoriesquestions.signals, raising new scientificEarly universe AGNs lack expectedAstrophysics of GalaxiesMysterious Quiet Galaxies in the Early UniverseScientists investigate unusual AGNs lacking expected signals in the cosmos.2025-04-05T03:41:46+00:00 ― 5 min read