Milky Way may be home to 30 alien civs

[travelnjones]

I am most fond of the "Effectively no Aliens'" idea.  Basically that when you factor time in the changes of two species meeting becomes less and less.  Perhaps you will come upon proof they once existed or once existed in a particular area, but not really anything face to face. a couple of silver spoons, hoping to find were two of a kind.

 

Edited June 17, 2020 by travelnjones