SETI
Search for Extraterrestrial Intelligence Institute publishes findings
👽Astrobiology Content type: AcademicThe Big Ear telescope was scanning at 1420.4056 megahertz on the night of 15 August 1977, the exact frequency at which hydrogen atoms vibrate across the universe, because Giuseppe Cocconi and Philip Morrison had argued years earlier that any species trying to be found would broadcast on that channel — and then, for 72 seconds, something did.
👽AstrobiologyLess-relevant results