3 ms·
Apparently, if an identical radio-Earth existed somewhere, current SETI hardware could detect it at about 1000 ly distance. What's the rationalization for this
by twoodfin 14y ago
Apparently, if an identical radio-Earth existed somewhere, current SETI hardware could detect it at about 1000 ly distance.
What's the rationalization for this? Is our radio footprint really so powerful as to not be drowned out by 1000 ly worth of background radiation?
- pavel_lishin 14y agoI think it depends on the wavelength, doesn't it? I can see a pie in the oven, despite all of the infrared background radiation surrounding it.
- gwern 14y agohttp://en.wikipedia.org/wiki/Waterhole_%28radio%29 http://en.wikipedia.org/wiki/Waterhole_%28radio%29