Astronomers have detected a flickering quasar called J0439+1634 as it appeared only 850 million years after the Big Bang. That discovery raises fresh questions about black hole formation and activity in the early Universe. The flickering light of this distant cosmic lighthouse showed that black hole...
A Quasar at Cosmic Dawn Flickers into View
By system
June 22, 2026 •
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Original source:
Universe Today