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Source of 'alien' radio signals may have been discovered by scientists studying the pulses that travel at the speed of light | Daily Mail Online
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Astronomers detect a radio “heartbeat” billions of light-years from Earth | MIT News | Massachusetts Institute of Technology
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A homespun Canadian telescope could explain mysterious radio signals from the distant universe | Science | AAAS
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Yes, mysterious radio signal from space detected in 1977 – but probably caused by comet - Africa Check
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8 billion-year-old radio signal found by astronomers -- and experts know 'precisely' where it came from
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A mysterious interstellar radio signal has been blinking on and off every 22 minutes for over 30 years
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