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COSMOS 13.4 BILLION EARTH YEARS Mapping Early Cosmic Microwave Background — Part One On Hotel Mars, Mark Devlin tells David Livingston how the Simons Observatory in Chile measures the Cosmic Microwave Background to study light released about 380,000 years after the Big Bang. Scientists analyze minute temperature fluctuations and polarization patterns to search for primordial gravitational wave signatures from the universe’s origin. (7)
