kerbiloid Posted February 19 Share Posted February 19 8 hours ago, magnemoe said: More likely they <...> https://en.wikipedia.org/wiki/The_Last_Castle_(novella) Quote Link to comment Share on other sites More sharing options...
farmerben Posted February 19 Share Posted February 19 (edited) 18 hours ago, StrandedonEarth said: If there was an omnidirectional radio transmitter at Proxima Centauri, how powerful would it have to be for us to detect it with current technology? Would it even be detectable over the radio noise from Proxima? A 500kW transmitter 4 light years away would be received at about 10-28 watts/sq. meter. They are trying now to detect aurora signals from exo-planets. AFAIK it hasn't happened yet. That's not how any exoplanets were discovered. Edited February 19 by farmerben Quote Link to comment Share on other sites More sharing options...
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