Scientists using the Cosmology Large Angular Scale Surveyor (CLASS) telescope have detected a faint 13-billion-year-old microwave signal. The Cosmology Large Angular Scale Surveyor (CLASS) telescope is located in Chile's Atacama Desert. The signal comes from the Cosmic Dawn, the era when the first stars, black holes, and galaxies formed. Cosmic Dawn occurred between 50 million and one billion years after the Big Bang. This discovery helps scientists understand how early stars affected the universe’s structure and temperature. The recent detection gives valuable clues about the universe’s formation and the role of early cosmic objects.
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