Looking For the City Lights of Alien Civilizations


Leaving the lights on, and you get an alien on your doorstep.

It is a bit odd for detection though, and I’m not sure if this is a great deal better than how we currently search. Or if it is at all practical. At the moment we need to use the entire spectra of a planet to tell if it’s habitable or not. Can we really see city lights now?

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