Jones, Barrie W.
The Search for extraterrestrial intelligence.
Physics Education, 38(1) pp. 8–13.
The modern era of the search for extraterrestrial technological intelligence (SETI) began in 1960 when a radiotelescope was used to see if any messages were being sent from the vicinity of two nearby stars. Since then there have been many searches, and not just with radiotelescopes. So far ETI has not been found, but the search has only just begun.
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