Ever since the pioneering work of Frank Drake (1930-) in 1960, astronomers have been looking for radio signals from extraterrestrial civilisations and have failed to find anything. 2,524 more words
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In 1967 Jocelyn Bell, a 24-year-old student from Cambridge University, was doing the research for her PhD.
She was using a radio telescope to study radio waves emitted from compact astronomical objects known as quasars, and when she analysed the data she had collected, she noticed a signal which appeared to pulse on and off every 1.3 seconds. 1,756 more words