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Saturday, January 24, 2026
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A 13-Billion-Year-Old Signal Could Finally Reveal the First Stars



Cosmic Signal Art ConceptAstronomers are uncovering new ways to study the universe’s first stars, objects too distant and faint to observe directly, by examining the ancient 21-centimeter radio signal left behind by hydrogen atoms shortly after the Big Bang. Understanding how the universe shifted from complete darkness to the first glow of starlight marks a major milestone in […]



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