I heard that in 1977, we received a signal from deep space that lasted 72 seconds, we still don't know how or where it came from. What does this mean? - Quora
![SC300 Big Ideas in Science Unit 9: Life Out There? Prof. Christopher Herren AIM: DrChrisHerren. - ppt download SC300 Big Ideas in Science Unit 9: Life Out There? Prof. Christopher Herren AIM: DrChrisHerren. - ppt download](https://images.slideplayer.com/25/8028878/slides/slide_17.jpg)
SC300 Big Ideas in Science Unit 9: Life Out There? Prof. Christopher Herren AIM: DrChrisHerren. - ppt download
![WO2016097832A1 - Communication between radio terminals on an extraterrestrial body using a space based component and an ancillary component located on the extraterrestrial body. - Google Patents WO2016097832A1 - Communication between radio terminals on an extraterrestrial body using a space based component and an ancillary component located on the extraterrestrial body. - Google Patents](https://patentimages.storage.googleapis.com/b0/41/cf/aa0afd30ad3cca/imgf000098_0001.png)
WO2016097832A1 - Communication between radio terminals on an extraterrestrial body using a space based component and an ancillary component located on the extraterrestrial body. - Google Patents
![Astronomers have picked up a strong radio signal from space — but it doesn't mean aliens - The Verge Astronomers have picked up a strong radio signal from space — but it doesn't mean aliens - The Verge](https://cdn.vox-cdn.com/thumbor/0pvOCbgiQCtCimA7ai8d9w9j4mI=/0x0:630x418/2400x1356/filters:focal(315x209:316x210)/cdn.vox-cdn.com/uploads/chorus_asset/file/15892488/1-UwXKQ9yI5UrDaMn8IIRN3A.0.0.1472506430.png)