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Astronomers detected a cosmic radio beacon that signaled every 36 minutes — but only for eight days.
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Radio waves from space pulsed every 36 minutes for just a week, then vanished. Their beam was one hundred percent polarized and rotated like light in a crystal. Such invisible beacons might fill the entire Galaxy.
🎯 A 36-minute period is so vast that an ordinary pulsar would need longer than the age of the Universe to slow down that much.