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áÒ^.b1K0Æ<7ÅÊz orange or red, you would not only be able to see the interlor of your microwave oven burst into activity when you push the start button, but you would also see a faint and nearly uniform glow spread throughout what the rest of us perceive as a dark night sky. More than four decades ago, scientists discovered that the universe is suffused with microwave radiation-iong-naveiength light-that is a cooi relic of the sweltering conditions just after the big bang.' This cosmic micro~i~ave background radiation is perfectly harmless. Early on, it was stupendously hot, but as the universe evolved and expanded, the radiation steadily diluted a...8 2w5e6o