Tag: Kardashev scale
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Radio-bright Galaxies Could Host Advanced Civilizations
Introduction: A fresh angle for SETI For decades, the Search for Extraterrestrial Intelligence (SETI) has scanned the cosmos for signs that civilizations beyond Earth broadcast across the radio spectrum. From the first listening experiments in the 1960s to the Breakthrough Listen initiative that began in 2016, researchers have sought both publicized signals and subtle technosignatures.…
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Galaxies with High Radio Emissions Could be Home to Many Advanced Civilizations
Can the radio glow of a galaxy reveal alien civilizations? For decades, humanity has peered into the cosmos in search of signs that we are not alone. From the early days of Project Ozma to the expansive Breakthrough Listen initiative, scientists have listened for artificial radio broadcasts among the stars. A recent study in the…