![The SETI Institute is after alien signals. Assuming another world is beaming a 1-million-watt radio signal in our direction, how far away can that source be before the signal is lost in The SETI Institute is after alien signals. Assuming another world is beaming a 1-million-watt radio signal in our direction, how far away can that source be before the signal is lost in](https://astronomy.com/-/media/Images/News%20and%20Observing/Ask%20Astro/2015/04/Spacebeacon.jpg)
The SETI Institute is after alien signals. Assuming another world is beaming a 1-million-watt radio signal in our direction, how far away can that source be before the signal is lost in
![SETI scientists spot 72 signals 'from alien galaxy' 3bn light years away | Science & Tech News | Sky News SETI scientists spot 72 signals 'from alien galaxy' 3bn light years away | Science & Tech News | Sky News](https://e3.365dm.com/18/09/2048x1152/skynews-seti-green-bank-telescope_4417507.jpg)
SETI scientists spot 72 signals 'from alien galaxy' 3bn light years away | Science & Tech News | Sky News
![Alien false alarm: 'Extraterrestrial' radio signals turn out to be human | Australia news | The Guardian Alien false alarm: 'Extraterrestrial' radio signals turn out to be human | Australia news | The Guardian](https://i.guim.co.uk/img/media/503c9102f343219c87af9a179fdc8c5da1cfdead/0_178_1200_720/master/1200.jpg?width=1200&height=1200&quality=85&auto=format&fit=crop&s=5f89b5b29df67a5081c5d46375d422e9)
Alien false alarm: 'Extraterrestrial' radio signals turn out to be human | Australia news | The Guardian
![Astronomers detect a radio “heartbeat” billions of light-years from Earth | MIT News | Massachusetts Institute of Technology Astronomers detect a radio “heartbeat” billions of light-years from Earth | MIT News | Massachusetts Institute of Technology](https://news.mit.edu/sites/default/files/images/202207/MIT-ClearFRB-01-press.jpg)