4 ms·

https://en.wikipedia.org/wiki/Fermi_paradox https://en.wikipedia.org/wiki/Fermi_paradox What explanation do you think is most likely to explain the fermi parad

• andreareina 6y ago
  My guess is that radiated transmissions are to weak to pick up. If I'm reading [1] right it would take 10^21 Watts for a transmission from proxima centauri to reach us with the same rx power as gps signals[2], which are already way below the noise floor. [1] http://gpsinformation.net/main/gpspower.htm http://gpsinformation.net/main/gpspower.htm [2] https://www.wolframalpha.com/input/?i=500W+*+%28distance+to+proxima+centauri+%2F+21000km%29%5E2 https://www.wolframalpha.com/input/?i=500W+*+%28distance+to+...
• imtringued 6y ago
  Interstellar travel is extremely difficult.
  • postalrat 6y ago
    How long do you think it will be until people get a probe to a nearby star system? 1000 years? 10000 years? Never? I think we will sooner than most people expect. And once we can do that we may also be able to start building a remote factory to build other probes and expand farther. Then it's only a matter of a few million years and we will have expanded to most stars in the Milky Way.