A janitor's curiosity about strange radio noise led to the discovery that the universe itself is singing—a faint whisper from the Big Bang still echoing 13.8 billion years later. This is the story of how Arno Penzias and Robert Wilson stumbled upon cosmic microwave background radiation while trying to eliminate interference, and accidentally proved our universe had a beginning. Hosted by Simplecast, an AdsWizz company. See https://pcm.adswizz.com

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